./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label29.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_b6c55d08-94a5-4f0b-a45b-c9a7ee136ea4/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b6c55d08-94a5-4f0b-a45b-c9a7ee136ea4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b6c55d08-94a5-4f0b-a45b-c9a7ee136ea4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b6c55d08-94a5-4f0b-a45b-c9a7ee136ea4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label29.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b6c55d08-94a5-4f0b-a45b-c9a7ee136ea4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b6c55d08-94a5-4f0b-a45b-c9a7ee136ea4/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 98618c76bfa0eca070eb71a2130d02b24ef80e44 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:46:55,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:46:55,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:46:55,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:46:55,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:46:55,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:46:55,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:46:55,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:46:55,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:46:55,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:46:55,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:46:55,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:46:55,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:46:55,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:46:55,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:46:55,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:46:55,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:46:55,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:46:55,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:46:55,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:46:55,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:46:55,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:46:55,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:46:55,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:46:55,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:46:55,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:46:55,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:46:55,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:46:55,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:46:55,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:46:55,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:46:55,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:46:55,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:46:55,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:46:55,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:46:55,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:46:55,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:46:55,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:46:55,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:46:55,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:46:55,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:46:55,911 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b6c55d08-94a5-4f0b-a45b-c9a7ee136ea4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:46:55,940 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:46:55,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:46:55,941 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:46:55,942 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:46:55,942 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:46:55,942 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:46:55,942 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:46:55,942 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:46:55,943 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:46:55,943 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:46:55,943 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:46:55,943 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:46:55,943 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:46:55,944 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:46:55,944 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:46:55,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:46:55,945 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:46:55,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:46:55,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:46:55,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:46:55,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:46:55,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:46:55,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:46:55,945 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:46:55,946 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:46:55,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:46:55,946 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:46:55,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:46:55,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:46:55,947 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:46:55,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:46:55,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:46:55,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:46:55,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:46:55,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:46:55,948 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:46:55,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:46:55,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:46:55,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:46:55,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:46:55,949 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_b6c55d08-94a5-4f0b-a45b-c9a7ee136ea4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b6c55d08-94a5-4f0b-a45b-c9a7ee136ea4/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98618c76bfa0eca070eb71a2130d02b24ef80e44 [2020-11-30 02:46:56,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:46:56,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:46:56,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:46:56,237 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:46:56,238 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:46:56,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b6c55d08-94a5-4f0b-a45b-c9a7ee136ea4/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem03_label29.c [2020-11-30 02:46:56,315 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b6c55d08-94a5-4f0b-a45b-c9a7ee136ea4/bin/utaipan/data/14b55afa2/1bffc926c5864a4ba826da358e86b51c/FLAG4dd0299f8 [2020-11-30 02:46:57,052 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:46:57,055 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b6c55d08-94a5-4f0b-a45b-c9a7ee136ea4/sv-benchmarks/c/eca-rers2012/Problem03_label29.c [2020-11-30 02:46:57,081 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b6c55d08-94a5-4f0b-a45b-c9a7ee136ea4/bin/utaipan/data/14b55afa2/1bffc926c5864a4ba826da358e86b51c/FLAG4dd0299f8 [2020-11-30 02:46:57,199 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b6c55d08-94a5-4f0b-a45b-c9a7ee136ea4/bin/utaipan/data/14b55afa2/1bffc926c5864a4ba826da358e86b51c [2020-11-30 02:46:57,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:46:57,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:46:57,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:46:57,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:46:57,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:46:57,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:46:57" (1/1) ... [2020-11-30 02:46:57,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d24dc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:46:57, skipping insertion in model container [2020-11-30 02:46:57,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:46:57" (1/1) ... [2020-11-30 02:46:57,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:46:57,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:46:58,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:46:58,019 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:46:58,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:46:58,376 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:46:58,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:46:58 WrapperNode [2020-11-30 02:46:58,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:46:58,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:46:58,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:46:58,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:46:58,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:46:58" (1/1) ... [2020-11-30 02:46:58,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:46:58" (1/1) ... [2020-11-30 02:46:58,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:46:58,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:46:58,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:46:58,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:46:58,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:46:58" (1/1) ... [2020-11-30 02:46:58,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:46:58" (1/1) ... [2020-11-30 02:46:58,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:46:58" (1/1) ... [2020-11-30 02:46:58,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:46:58" (1/1) ... [2020-11-30 02:46:58,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:46:58" (1/1) ... [2020-11-30 02:46:58,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:46:58" (1/1) ... [2020-11-30 02:46:58,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:46:58" (1/1) ... [2020-11-30 02:46:58,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:46:58,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:46:58,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:46:58,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:46:58,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:46:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6c55d08-94a5-4f0b-a45b-c9a7ee136ea4/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 02:46:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:46:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:46:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:46:58,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:47:03,421 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:47:03,422 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 02:47:03,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:47:03 BoogieIcfgContainer [2020-11-30 02:47:03,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:47:03,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:47:03,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:47:03,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:47:03,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:46:57" (1/3) ... [2020-11-30 02:47:03,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@356794ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:47:03, skipping insertion in model container [2020-11-30 02:47:03,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:46:58" (2/3) ... [2020-11-30 02:47:03,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@356794ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:47:03, skipping insertion in model container [2020-11-30 02:47:03,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:47:03" (3/3) ... [2020-11-30 02:47:03,434 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label29.c [2020-11-30 02:47:03,449 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:47:03,455 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:47:03,467 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:47:03,507 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:47:03,508 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:47:03,508 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:47:03,508 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:47:03,508 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:47:03,509 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:47:03,509 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:47:03,509 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:47:03,535 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-11-30 02:47:03,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-11-30 02:47:03,556 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:47:03,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:47:03,558 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:47:03,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:47:03,566 INFO L82 PathProgramCache]: Analyzing trace with hash 893313823, now seen corresponding path program 1 times [2020-11-30 02:47:03,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:47:03,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18617975] [2020-11-30 02:47:03,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:47:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:47:04,294 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 02:47:04,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18617975] [2020-11-30 02:47:04,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:47:04,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:47:04,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45850031] [2020-11-30 02:47:04,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:47:04,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:47:04,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:47:04,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:47:04,326 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2020-11-30 02:47:05,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:47:05,857 INFO L93 Difference]: Finished difference Result 440 states and 860 transitions. [2020-11-30 02:47:05,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:47:05,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2020-11-30 02:47:05,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:47:05,877 INFO L225 Difference]: With dead ends: 440 [2020-11-30 02:47:05,877 INFO L226 Difference]: Without dead ends: 289 [2020-11-30 02:47:05,881 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 02:47:05,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-11-30 02:47:05,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2020-11-30 02:47:05,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-11-30 02:47:05,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 550 transitions. [2020-11-30 02:47:05,999 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 550 transitions. Word has length 143 [2020-11-30 02:47:06,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:47:06,005 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 550 transitions. [2020-11-30 02:47:06,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:47:06,005 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 550 transitions. [2020-11-30 02:47:06,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-30 02:47:06,021 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:47:06,021 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:47:06,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:47:06,023 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:47:06,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:47:06,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1026952801, now seen corresponding path program 1 times [2020-11-30 02:47:06,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:47:06,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629100565] [2020-11-30 02:47:06,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:47:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:47:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:47:06,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629100565] [2020-11-30 02:47:06,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:47:06,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:47:06,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014899461] [2020-11-30 02:47:06,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:47:06,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:47:06,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:47:06,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:47:06,194 INFO L87 Difference]: Start difference. First operand 289 states and 550 transitions. Second operand 3 states. [2020-11-30 02:47:07,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:47:07,327 INFO L93 Difference]: Finished difference Result 865 states and 1648 transitions. [2020-11-30 02:47:07,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:47:07,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-11-30 02:47:07,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:47:07,335 INFO L225 Difference]: With dead ends: 865 [2020-11-30 02:47:07,335 INFO L226 Difference]: Without dead ends: 577 [2020-11-30 02:47:07,338 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 02:47:07,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2020-11-30 02:47:07,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 575. [2020-11-30 02:47:07,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-11-30 02:47:07,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1011 transitions. [2020-11-30 02:47:07,379 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1011 transitions. Word has length 148 [2020-11-30 02:47:07,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:47:07,380 INFO L481 AbstractCegarLoop]: Abstraction has 575 states and 1011 transitions. [2020-11-30 02:47:07,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:47:07,380 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1011 transitions. [2020-11-30 02:47:07,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-30 02:47:07,384 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:47:07,385 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:47:07,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:47:07,385 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:47:07,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:47:07,386 INFO L82 PathProgramCache]: Analyzing trace with hash -828029120, now seen corresponding path program 1 times [2020-11-30 02:47:07,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:47:07,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221272155] [2020-11-30 02:47:07,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:47:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:47:07,504 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 02:47:07,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221272155] [2020-11-30 02:47:07,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:47:07,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:47:07,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56986770] [2020-11-30 02:47:07,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:47:07,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:47:07,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:47:07,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:47:07,514 INFO L87 Difference]: Start difference. First operand 575 states and 1011 transitions. Second operand 3 states. [2020-11-30 02:47:08,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:47:08,526 INFO L93 Difference]: Finished difference Result 1721 states and 3030 transitions. [2020-11-30 02:47:08,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:47:08,527 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 151 [2020-11-30 02:47:08,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:47:08,536 INFO L225 Difference]: With dead ends: 1721 [2020-11-30 02:47:08,536 INFO L226 Difference]: Without dead ends: 1147 [2020-11-30 02:47:08,540 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 02:47:08,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2020-11-30 02:47:08,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2020-11-30 02:47:08,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2020-11-30 02:47:08,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1962 transitions. [2020-11-30 02:47:08,583 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1962 transitions. Word has length 151 [2020-11-30 02:47:08,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:47:08,584 INFO L481 AbstractCegarLoop]: Abstraction has 1147 states and 1962 transitions. [2020-11-30 02:47:08,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:47:08,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1962 transitions. [2020-11-30 02:47:08,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-11-30 02:47:08,589 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:47:08,589 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:47:08,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:47:08,590 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:47:08,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:47:08,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1951181027, now seen corresponding path program 1 times [2020-11-30 02:47:08,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:47:08,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686001707] [2020-11-30 02:47:08,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:47:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:47:08,713 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 02:47:08,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686001707] [2020-11-30 02:47:08,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:47:08,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:47:08,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949519321] [2020-11-30 02:47:08,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:47:08,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:47:08,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:47:08,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:47:08,717 INFO L87 Difference]: Start difference. First operand 1147 states and 1962 transitions. Second operand 3 states. [2020-11-30 02:47:09,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:47:09,968 INFO L93 Difference]: Finished difference Result 3437 states and 5883 transitions. [2020-11-30 02:47:09,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:47:09,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2020-11-30 02:47:09,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:47:09,983 INFO L225 Difference]: With dead ends: 3437 [2020-11-30 02:47:09,984 INFO L226 Difference]: Without dead ends: 2291 [2020-11-30 02:47:09,987 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 02:47:09,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2020-11-30 02:47:10,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2291. [2020-11-30 02:47:10,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2291 states. [2020-11-30 02:47:10,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3562 transitions. [2020-11-30 02:47:10,059 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3562 transitions. Word has length 163 [2020-11-30 02:47:10,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:47:10,059 INFO L481 AbstractCegarLoop]: Abstraction has 2291 states and 3562 transitions. [2020-11-30 02:47:10,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:47:10,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3562 transitions. [2020-11-30 02:47:10,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-11-30 02:47:10,069 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:47:10,069 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:47:10,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:47:10,070 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:47:10,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:47:10,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1402779365, now seen corresponding path program 1 times [2020-11-30 02:47:10,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:47:10,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785176755] [2020-11-30 02:47:10,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:47:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:47:10,270 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-30 02:47:10,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785176755] [2020-11-30 02:47:10,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:47:10,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:47:10,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236000098] [2020-11-30 02:47:10,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:47:10,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:47:10,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:47:10,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:47:10,273 INFO L87 Difference]: Start difference. First operand 2291 states and 3562 transitions. Second operand 3 states. [2020-11-30 02:47:11,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:47:11,455 INFO L93 Difference]: Finished difference Result 5725 states and 8865 transitions. [2020-11-30 02:47:11,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:47:11,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2020-11-30 02:47:11,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:47:11,517 INFO L225 Difference]: With dead ends: 5725 [2020-11-30 02:47:11,517 INFO L226 Difference]: Without dead ends: 3435 [2020-11-30 02:47:11,520 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 02:47:11,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2020-11-30 02:47:11,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3435. [2020-11-30 02:47:11,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3435 states. [2020-11-30 02:47:11,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3435 states to 3435 states and 5290 transitions. [2020-11-30 02:47:11,630 INFO L78 Accepts]: Start accepts. Automaton has 3435 states and 5290 transitions. Word has length 184 [2020-11-30 02:47:11,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:47:11,633 INFO L481 AbstractCegarLoop]: Abstraction has 3435 states and 5290 transitions. [2020-11-30 02:47:11,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:47:11,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states and 5290 transitions. [2020-11-30 02:47:11,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-11-30 02:47:11,644 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:47:11,644 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:47:11,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 02:47:11,645 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:47:11,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:47:11,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1028917656, now seen corresponding path program 1 times [2020-11-30 02:47:11,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:47:11,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956844843] [2020-11-30 02:47:11,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:47:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:47:11,839 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 53 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-30 02:47:11,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956844843] [2020-11-30 02:47:11,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504638390] [2020-11-30 02:47:11,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6c55d08-94a5-4f0b-a45b-c9a7ee136ea4/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 02:47:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:47:12,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:47:12,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:47:12,289 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-30 02:47:12,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:47:12,418 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-30 02:47:12,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:47:12,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-30 02:47:12,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909508641] [2020-11-30 02:47:12,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:47:12,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:47:12,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:47:12,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:47:12,424 INFO L87 Difference]: Start difference. First operand 3435 states and 5290 transitions. Second operand 3 states. [2020-11-30 02:47:13,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:47:13,763 INFO L93 Difference]: Finished difference Result 10158 states and 15646 transitions. [2020-11-30 02:47:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:47:13,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2020-11-30 02:47:13,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:47:13,802 INFO L225 Difference]: With dead ends: 10158 [2020-11-30 02:47:13,803 INFO L226 Difference]: Without dead ends: 6724 [2020-11-30 02:47:13,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 379 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:47:13,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6724 states. [2020-11-30 02:47:14,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6724 to 6724. [2020-11-30 02:47:14,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6724 states. [2020-11-30 02:47:14,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6724 states to 6724 states and 10212 transitions. [2020-11-30 02:47:14,025 INFO L78 Accepts]: Start accepts. Automaton has 6724 states and 10212 transitions. Word has length 191 [2020-11-30 02:47:14,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:47:14,026 INFO L481 AbstractCegarLoop]: Abstraction has 6724 states and 10212 transitions. [2020-11-30 02:47:14,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:47:14,027 INFO L276 IsEmpty]: Start isEmpty. Operand 6724 states and 10212 transitions. [2020-11-30 02:47:14,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-11-30 02:47:14,043 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:47:14,043 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:47:14,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-30 02:47:14,271 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:47:14,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:47:14,271 INFO L82 PathProgramCache]: Analyzing trace with hash -689838091, now seen corresponding path program 1 times [2020-11-30 02:47:14,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:47:14,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106820978] [2020-11-30 02:47:14,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:47:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:47:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:47:14,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106820978] [2020-11-30 02:47:14,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:47:14,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:47:14,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473529707] [2020-11-30 02:47:14,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:47:14,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:47:14,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:47:14,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:47:14,457 INFO L87 Difference]: Start difference. First operand 6724 states and 10212 transitions. Second operand 3 states. [2020-11-30 02:47:15,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:47:15,683 INFO L93 Difference]: Finished difference Result 15735 states and 23935 transitions. [2020-11-30 02:47:15,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:47:15,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2020-11-30 02:47:15,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:47:15,759 INFO L225 Difference]: With dead ends: 15735 [2020-11-30 02:47:15,759 INFO L226 Difference]: Without dead ends: 9012 [2020-11-30 02:47:15,769 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 02:47:15,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9012 states. [2020-11-30 02:47:15,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9012 to 9012. [2020-11-30 02:47:15,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9012 states. [2020-11-30 02:47:16,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9012 states to 9012 states and 13374 transitions. [2020-11-30 02:47:16,024 INFO L78 Accepts]: Start accepts. Automaton has 9012 states and 13374 transitions. Word has length 201 [2020-11-30 02:47:16,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:47:16,024 INFO L481 AbstractCegarLoop]: Abstraction has 9012 states and 13374 transitions. [2020-11-30 02:47:16,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:47:16,025 INFO L276 IsEmpty]: Start isEmpty. Operand 9012 states and 13374 transitions. [2020-11-30 02:47:16,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-11-30 02:47:16,046 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:47:16,047 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:47:16,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 02:47:16,047 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:47:16,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:47:16,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1101281918, now seen corresponding path program 1 times [2020-11-30 02:47:16,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:47:16,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490434293] [2020-11-30 02:47:16,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:47:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:47:16,158 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 02:47:16,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490434293] [2020-11-30 02:47:16,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:47:16,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:47:16,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284269298] [2020-11-30 02:47:16,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:47:16,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:47:16,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:47:16,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:47:16,161 INFO L87 Difference]: Start difference. First operand 9012 states and 13374 transitions. Second operand 3 states. [2020-11-30 02:47:17,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:47:17,448 INFO L93 Difference]: Finished difference Result 21598 states and 32147 transitions. [2020-11-30 02:47:17,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:47:17,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-11-30 02:47:17,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:47:17,491 INFO L225 Difference]: With dead ends: 21598 [2020-11-30 02:47:17,491 INFO L226 Difference]: Without dead ends: 12730 [2020-11-30 02:47:17,504 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 02:47:17,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12730 states. [2020-11-30 02:47:17,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12730 to 12730. [2020-11-30 02:47:17,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12730 states. [2020-11-30 02:47:17,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12730 states to 12730 states and 18035 transitions. [2020-11-30 02:47:17,764 INFO L78 Accepts]: Start accepts. Automaton has 12730 states and 18035 transitions. Word has length 204 [2020-11-30 02:47:17,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:47:17,764 INFO L481 AbstractCegarLoop]: Abstraction has 12730 states and 18035 transitions. [2020-11-30 02:47:17,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:47:17,764 INFO L276 IsEmpty]: Start isEmpty. Operand 12730 states and 18035 transitions. [2020-11-30 02:47:17,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-11-30 02:47:17,795 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:47:17,796 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:47:17,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 02:47:17,796 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:47:17,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:47:17,797 INFO L82 PathProgramCache]: Analyzing trace with hash -567023950, now seen corresponding path program 1 times [2020-11-30 02:47:17,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:47:17,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844832963] [2020-11-30 02:47:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:47:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:47:18,035 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-11-30 02:47:18,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844832963] [2020-11-30 02:47:18,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317067493] [2020-11-30 02:47:18,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6c55d08-94a5-4f0b-a45b-c9a7ee136ea4/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:47:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:47:18,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:47:18,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:47:18,375 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 02:47:18,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:47:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 02:47:18,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:47:18,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-30 02:47:18,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373806172] [2020-11-30 02:47:18,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:47:18,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:47:18,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:47:18,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:47:18,431 INFO L87 Difference]: Start difference. First operand 12730 states and 18035 transitions. Second operand 3 states. [2020-11-30 02:47:19,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:47:19,842 INFO L93 Difference]: Finished difference Result 30035 states and 43131 transitions. [2020-11-30 02:47:19,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:47:19,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 252 [2020-11-30 02:47:19,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:47:19,887 INFO L225 Difference]: With dead ends: 30035 [2020-11-30 02:47:19,887 INFO L226 Difference]: Without dead ends: 17592 [2020-11-30 02:47:19,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:47:19,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17592 states. [2020-11-30 02:47:20,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17592 to 16162. [2020-11-30 02:47:20,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16162 states. [2020-11-30 02:47:20,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16162 states to 16162 states and 22406 transitions. [2020-11-30 02:47:20,278 INFO L78 Accepts]: Start accepts. Automaton has 16162 states and 22406 transitions. Word has length 252 [2020-11-30 02:47:20,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:47:20,279 INFO L481 AbstractCegarLoop]: Abstraction has 16162 states and 22406 transitions. [2020-11-30 02:47:20,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:47:20,279 INFO L276 IsEmpty]: Start isEmpty. Operand 16162 states and 22406 transitions. [2020-11-30 02:47:20,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-11-30 02:47:20,390 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:47:20,390 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, 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, 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] [2020-11-30 02:47:20,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:47:20,591 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:47:20,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:47:20,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1872096482, now seen corresponding path program 1 times [2020-11-30 02:47:20,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:47:20,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869872394] [2020-11-30 02:47:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:47:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:47:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:47:20,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869872394] [2020-11-30 02:47:20,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:47:20,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:47:20,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427263902] [2020-11-30 02:47:20,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:47:20,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:47:20,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:47:20,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:47:20,960 INFO L87 Difference]: Start difference. First operand 16162 states and 22406 transitions. Second operand 3 states. [2020-11-30 02:47:22,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:47:22,417 INFO L93 Difference]: Finished difference Result 39330 states and 54303 transitions. [2020-11-30 02:47:22,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:47:22,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 267 [2020-11-30 02:47:22,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:47:22,473 INFO L225 Difference]: With dead ends: 39330 [2020-11-30 02:47:22,473 INFO L226 Difference]: Without dead ends: 23455 [2020-11-30 02:47:22,490 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 02:47:22,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23455 states. [2020-11-30 02:47:22,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23455 to 23169. [2020-11-30 02:47:22,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23169 states. [2020-11-30 02:47:22,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23169 states to 23169 states and 31083 transitions. [2020-11-30 02:47:22,959 INFO L78 Accepts]: Start accepts. Automaton has 23169 states and 31083 transitions. Word has length 267 [2020-11-30 02:47:22,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:47:22,960 INFO L481 AbstractCegarLoop]: Abstraction has 23169 states and 31083 transitions. [2020-11-30 02:47:22,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:47:22,960 INFO L276 IsEmpty]: Start isEmpty. Operand 23169 states and 31083 transitions. [2020-11-30 02:47:23,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-11-30 02:47:23,030 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:47:23,031 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:47:23,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 02:47:23,032 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:47:23,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:47:23,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1613304658, now seen corresponding path program 1 times [2020-11-30 02:47:23,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:47:23,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535237459] [2020-11-30 02:47:23,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:47:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:47:23,243 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-11-30 02:47:23,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535237459] [2020-11-30 02:47:23,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222870944] [2020-11-30 02:47:23,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6c55d08-94a5-4f0b-a45b-c9a7ee136ea4/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:47:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:47:23,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:47:23,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:47:23,825 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-30 02:47:23,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:47:23,999 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-30 02:47:23,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:47:24,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2020-11-30 02:47:24,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037473414] [2020-11-30 02:47:24,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:47:24,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:47:24,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:47:24,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:47:24,003 INFO L87 Difference]: Start difference. First operand 23169 states and 31083 transitions. Second operand 4 states. [2020-11-30 02:47:26,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:47:26,373 INFO L93 Difference]: Finished difference Result 57205 states and 76969 transitions. [2020-11-30 02:47:26,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:47:26,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 269 [2020-11-30 02:47:26,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:47:26,451 INFO L225 Difference]: With dead ends: 57205 [2020-11-30 02:47:26,452 INFO L226 Difference]: Without dead ends: 34323 [2020-11-30 02:47:26,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:47:26,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34323 states. [2020-11-30 02:47:27,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34323 to 34323. [2020-11-30 02:47:27,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34323 states. [2020-11-30 02:47:27,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34323 states to 34323 states and 44810 transitions. [2020-11-30 02:47:27,342 INFO L78 Accepts]: Start accepts. Automaton has 34323 states and 44810 transitions. Word has length 269 [2020-11-30 02:47:27,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:47:27,343 INFO L481 AbstractCegarLoop]: Abstraction has 34323 states and 44810 transitions. [2020-11-30 02:47:27,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:47:27,344 INFO L276 IsEmpty]: Start isEmpty. Operand 34323 states and 44810 transitions. [2020-11-30 02:47:27,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-11-30 02:47:27,396 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:47:27,397 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-11-30 02:47:27,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-30 02:47:27,623 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:47:27,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:47:27,624 INFO L82 PathProgramCache]: Analyzing trace with hash -119423301, now seen corresponding path program 1 times [2020-11-30 02:47:27,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:47:27,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631503345] [2020-11-30 02:47:27,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:47:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:47:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 130 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:47:28,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631503345] [2020-11-30 02:47:28,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308725091] [2020-11-30 02:47:28,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6c55d08-94a5-4f0b-a45b-c9a7ee136ea4/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:47:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:47:28,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:47:28,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:47:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 02:47:28,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:47:29,002 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 02:47:29,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:47:29,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2020-11-30 02:47:29,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364477152] [2020-11-30 02:47:29,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:47:29,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:47:29,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:47:29,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:47:29,018 INFO L87 Difference]: Start difference. First operand 34323 states and 44810 transitions. Second operand 4 states. [2020-11-30 02:47:30,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:47:30,890 INFO L93 Difference]: Finished difference Result 74935 states and 97871 transitions. [2020-11-30 02:47:30,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:47:30,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 274 [2020-11-30 02:47:30,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:47:30,892 INFO L225 Difference]: With dead ends: 74935 [2020-11-30 02:47:30,892 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:47:30,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:47:30,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:47:30,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:47:30,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:47:30,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:47:30,920 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 274 [2020-11-30 02:47:30,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:47:30,921 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:47:30,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:47:30,921 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:47:30,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:47:31,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:47:31,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:47:31,479 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 32 [2020-11-30 02:47:31,856 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 32 [2020-11-30 02:47:32,027 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2020-11-30 02:47:32,191 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2020-11-30 02:47:32,194 INFO L274 CegarLoopResult]: For program point L498(lines 498 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,195 INFO L274 CegarLoopResult]: For program point L432(lines 432 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,195 INFO L274 CegarLoopResult]: For program point L366(lines 366 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,195 INFO L274 CegarLoopResult]: For program point L763(lines 763 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,195 INFO L274 CegarLoopResult]: For program point L632(lines 632 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,195 INFO L274 CegarLoopResult]: For program point L566(lines 566 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,195 INFO L274 CegarLoopResult]: For program point L302(lines 302 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,195 INFO L274 CegarLoopResult]: For program point L1293(lines 1293 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,195 INFO L274 CegarLoopResult]: For program point L1360(lines 1360 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,195 INFO L274 CegarLoopResult]: For program point L1162(lines 1162 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,195 INFO L274 CegarLoopResult]: For program point L105(lines 105 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,195 INFO L274 CegarLoopResult]: For program point L1096(lines 1096 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,196 INFO L274 CegarLoopResult]: For program point L1031(lines 1031 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,196 INFO L274 CegarLoopResult]: For program point L965(lines 965 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,196 INFO L274 CegarLoopResult]: For program point L899(lines 899 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,196 INFO L274 CegarLoopResult]: For program point L174(lines 174 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,196 INFO L274 CegarLoopResult]: For program point L835(lines 835 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,196 INFO L274 CegarLoopResult]: For program point L771(lines 771 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,196 INFO L274 CegarLoopResult]: For program point L507(lines 507 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,196 INFO L274 CegarLoopResult]: For program point L243(lines 243 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,196 INFO L274 CegarLoopResult]: For program point L1433(lines 1433 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,196 INFO L274 CegarLoopResult]: For program point L376(lines 376 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,196 INFO L274 CegarLoopResult]: For program point L311(lines 311 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,197 INFO L274 CegarLoopResult]: For program point L1236(lines 1236 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,197 INFO L274 CegarLoopResult]: For program point L576(lines 576 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,197 INFO L274 CegarLoopResult]: For program point L444(lines 444 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,197 INFO L274 CegarLoopResult]: For program point L1369(lines 1369 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,197 INFO L274 CegarLoopResult]: For program point L1105(lines 1105 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,197 INFO L274 CegarLoopResult]: For program point L643(lines 643 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,197 INFO L274 CegarLoopResult]: For program point L1172(lines 1172 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,197 INFO L274 CegarLoopResult]: For program point L115(lines 115 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,197 INFO L274 CegarLoopResult]: For program point L248(lines 248 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,197 INFO L274 CegarLoopResult]: For program point L182(lines 182 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,197 INFO L274 CegarLoopResult]: For program point L1041(lines 1041 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,197 INFO L274 CegarLoopResult]: For program point L909(lines 909 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,198 INFO L274 CegarLoopResult]: For program point L711(lines 711 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,198 INFO L274 CegarLoopResult]: For program point L976(lines 976 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,198 INFO L274 CegarLoopResult]: For program point L779(lines 779 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,198 INFO L274 CegarLoopResult]: For program point L846(lines 846 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,198 INFO L274 CegarLoopResult]: For program point L451(lines 451 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,198 INFO L274 CegarLoopResult]: For program point L1442(lines 1442 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,198 INFO L274 CegarLoopResult]: For program point L584(lines 584 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,198 INFO L274 CegarLoopResult]: For program point L1575-1(lines 64 1660) no Hoare annotation was computed. [2020-11-30 02:47:32,198 INFO L274 CegarLoopResult]: For program point L387(lines 387 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,198 INFO L274 CegarLoopResult]: For program point L1114(lines 1114 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,198 INFO L274 CegarLoopResult]: For program point L1048(lines 1048 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,199 INFO L274 CegarLoopResult]: For program point L322(lines 322 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,199 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:47:32,199 INFO L274 CegarLoopResult]: For program point L1247(lines 1247 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,199 INFO L274 CegarLoopResult]: For program point L124(lines 124 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,199 INFO L274 CegarLoopResult]: For program point L917(lines 917 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,199 INFO L274 CegarLoopResult]: For program point L719(lines 719 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,199 INFO L274 CegarLoopResult]: For program point L653(lines 653 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,199 INFO L274 CegarLoopResult]: For program point L1578-1(lines 64 1660) no Hoare annotation was computed. [2020-11-30 02:47:32,199 INFO L274 CegarLoopResult]: For program point L191(lines 191 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,199 INFO L274 CegarLoopResult]: For program point L1579(line 1579) no Hoare annotation was computed. [2020-11-30 02:47:32,199 INFO L274 CegarLoopResult]: For program point L1315(lines 1315 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,199 INFO L274 CegarLoopResult]: For program point L258(lines 258 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,200 INFO L274 CegarLoopResult]: For program point L1183(lines 1183 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,200 INFO L274 CegarLoopResult]: For program point L985(lines 985 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,200 INFO L274 CegarLoopResult]: For program point L787(lines 787 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,200 INFO L274 CegarLoopResult]: For program point L523(lines 523 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,200 INFO L274 CegarLoopResult]: For program point L854(lines 854 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,200 INFO L274 CegarLoopResult]: For program point L460(lines 460 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,200 INFO L274 CegarLoopResult]: For program point L593(lines 593 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,200 INFO L274 CegarLoopResult]: For program point L1452(lines 1452 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,200 INFO L274 CegarLoopResult]: For program point L329(lines 329 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,200 INFO L274 CegarLoopResult]: For program point L1122(lines 1122 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,200 INFO L274 CegarLoopResult]: For program point L65(lines 65 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,201 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 02:47:32,201 INFO L274 CegarLoopResult]: For program point L794(lines 794 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,201 INFO L274 CegarLoopResult]: For program point L1323(lines 1323 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,201 INFO L274 CegarLoopResult]: For program point L993(lines 993 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,201 INFO L274 CegarLoopResult]: For program point L927(lines 927 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,201 INFO L274 CegarLoopResult]: For program point L663(lines 663 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,201 INFO L274 CegarLoopResult]: For program point L267(lines 267 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,201 INFO L274 CegarLoopResult]: For program point L201(lines 201 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,201 INFO L274 CegarLoopResult]: For program point L1192(lines 1192 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,201 INFO L274 CegarLoopResult]: For program point L532(lines 532 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,201 INFO L274 CegarLoopResult]: For program point L1391(lines 1391 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,202 INFO L274 CegarLoopResult]: For program point L1259(lines 1259 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,202 INFO L274 CegarLoopResult]: For program point L136(lines 136 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,202 INFO L274 CegarLoopResult]: For program point L863(lines 863 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,202 INFO L274 CegarLoopResult]: For program point L468(lines 468 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,202 INFO L274 CegarLoopResult]: For program point L1130(lines 1130 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,202 INFO L274 CegarLoopResult]: For program point L668(lines 668 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,205 INFO L270 CegarLoopResult]: At program point L1659(lines 64 1660) the Hoare annotation is: (let ((.cse0 (= ~a27~0 1)) (.cse3 (= ~a11~0 1))) (let ((.cse2 (= ~a12~0 1)) (.cse1 (or .cse0 .cse3))) (or (and .cse0 (= ~a11~0 0)) (and (= ~a6~0 0) (<= ~a26~0 0) .cse1) (<= 1 ~a3~0) (and .cse2 (= ~a27~0 0)) (and .cse2 (= ~a26~0 1) .cse1) .cse3 (= ~a6~0 1) (and .cse0 (= ~a12~0 0)) (and (= ~a5~0 1) .cse1)))) [2020-11-30 02:47:32,205 INFO L274 CegarLoopResult]: For program point L602(lines 602 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,205 INFO L274 CegarLoopResult]: For program point L1462(lines 1462 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,205 INFO L274 CegarLoopResult]: For program point L339(lines 339 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,205 INFO L274 CegarLoopResult]: For program point L1331(lines 1331 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,206 INFO L277 CegarLoopResult]: At program point L1662(lines 1662 1679) the Hoare annotation is: true [2020-11-30 02:47:32,206 INFO L274 CegarLoopResult]: For program point L539(lines 539 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,206 INFO L274 CegarLoopResult]: For program point L407(lines 407 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,206 INFO L274 CegarLoopResult]: For program point L275(lines 275 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,206 INFO L274 CegarLoopResult]: For program point L1200(lines 1200 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,206 INFO L274 CegarLoopResult]: For program point L805(lines 805 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,207 INFO L274 CegarLoopResult]: For program point L145(lines 145 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,207 INFO L274 CegarLoopResult]: For program point L1004(lines 1004 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,207 INFO L274 CegarLoopResult]: For program point L1137(lines 1137 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,207 INFO L274 CegarLoopResult]: For program point L1071(lines 1071 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,207 INFO L274 CegarLoopResult]: For program point L873(lines 873 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,207 INFO L274 CegarLoopResult]: For program point L675(lines 675 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,208 INFO L274 CegarLoopResult]: For program point L477(lines 477 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,208 INFO L274 CegarLoopResult]: For program point L1336(lines 1336 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,208 INFO L274 CegarLoopResult]: For program point L743(lines 743 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,208 INFO L270 CegarLoopResult]: At program point L1668-2(lines 1668 1678) the Hoare annotation is: (let ((.cse0 (= ~a27~0 1)) (.cse3 (= ~a11~0 1))) (let ((.cse2 (= ~a12~0 1)) (.cse1 (or .cse0 .cse3))) (or (and .cse0 (= ~a11~0 0)) (and (= ~a6~0 0) (<= ~a26~0 0) .cse1) (<= 1 ~a3~0) (and .cse2 (= ~a27~0 0)) (and .cse2 (= ~a26~0 1) .cse1) .cse3 (= ~a6~0 1) (and .cse0 (= ~a12~0 0)) (and (= ~a5~0 1) .cse1)))) [2020-11-30 02:47:32,208 INFO L274 CegarLoopResult]: For program point L1470(lines 1470 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,209 INFO L274 CegarLoopResult]: For program point L83(lines 83 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,209 INFO L274 CegarLoopResult]: For program point L613(lines 613 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,209 INFO L274 CegarLoopResult]: For program point L415(lines 415 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,209 INFO L274 CegarLoopResult]: For program point L349(lines 349 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,209 INFO L274 CegarLoopResult]: For program point L1142(lines 1142 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,209 INFO L274 CegarLoopResult]: For program point L1076(lines 1076 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,210 INFO L274 CegarLoopResult]: For program point L878(lines 878 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,210 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:47:32,210 INFO L274 CegarLoopResult]: For program point L549(lines 549 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,210 INFO L274 CegarLoopResult]: For program point L1210(lines 1210 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,211 INFO L274 CegarLoopResult]: For program point L814(lines 814 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,211 INFO L274 CegarLoopResult]: For program point L1673(line 1673) no Hoare annotation was computed. [2020-11-30 02:47:32,211 INFO L274 CegarLoopResult]: For program point L286(lines 286 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,211 INFO L274 CegarLoopResult]: For program point L1013(lines 1013 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,211 INFO L274 CegarLoopResult]: For program point L947(lines 947 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,211 INFO L274 CegarLoopResult]: For program point L156(lines 156 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,212 INFO L274 CegarLoopResult]: For program point L685(lines 685 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,212 INFO L274 CegarLoopResult]: For program point L1412(lines 1412 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,212 INFO L274 CegarLoopResult]: For program point L1346(lines 1346 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,212 INFO L274 CegarLoopResult]: For program point L223(lines 223 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,212 INFO L274 CegarLoopResult]: For program point L92(lines 92 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,212 INFO L274 CegarLoopResult]: For program point L753(lines 753 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,212 INFO L274 CegarLoopResult]: For program point L1084(lines 1084 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,213 INFO L274 CegarLoopResult]: For program point L556(lines 556 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,213 INFO L274 CegarLoopResult]: For program point L490(lines 490 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,213 INFO L274 CegarLoopResult]: For program point L424(lines 424 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,213 INFO L274 CegarLoopResult]: For program point L358(lines 358 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,213 INFO L274 CegarLoopResult]: For program point L1284(lines 1284 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,213 INFO L274 CegarLoopResult]: For program point L1152(lines 1152 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,214 INFO L274 CegarLoopResult]: For program point L624(lines 624 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,214 INFO L274 CegarLoopResult]: For program point L294(lines 294 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,214 INFO L274 CegarLoopResult]: For program point L1021(lines 1021 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,214 INFO L274 CegarLoopResult]: For program point L823(lines 823 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,214 INFO L274 CegarLoopResult]: For program point L1220(lines 1220 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,214 INFO L274 CegarLoopResult]: For program point L957(lines 957 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,215 INFO L274 CegarLoopResult]: For program point L1354(lines 1354 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,215 INFO L274 CegarLoopResult]: For program point L165(lines 165 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,215 INFO L274 CegarLoopResult]: For program point L99(lines 99 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,215 INFO L274 CegarLoopResult]: For program point L694(lines 694 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,215 INFO L274 CegarLoopResult]: For program point L232(lines 232 1475) no Hoare annotation was computed. [2020-11-30 02:47:32,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:47:32 BoogieIcfgContainer [2020-11-30 02:47:32,255 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:47:32,256 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:47:32,256 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:47:32,256 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:47:32,257 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:47:03" (3/4) ... [2020-11-30 02:47:32,263 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:47:32,322 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 119 nodes and edges [2020-11-30 02:47:32,327 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-30 02:47:32,332 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-30 02:47:32,337 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-30 02:47:32,649 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b6c55d08-94a5-4f0b-a45b-c9a7ee136ea4/bin/utaipan/witness.graphml [2020-11-30 02:47:32,649 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:47:32,651 INFO L168 Benchmark]: Toolchain (without parser) took 35445.89 ms. Allocated memory was 109.1 MB in the beginning and 1.0 GB in the end (delta: 895.5 MB). Free memory was 73.4 MB in the beginning and 454.0 MB in the end (delta: -380.6 MB). Peak memory consumption was 514.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:47:32,651 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 79.7 MB. Free memory was 37.5 MB in the beginning and 37.5 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:47:32,652 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1172.76 ms. Allocated memory is still 109.1 MB. Free memory was 73.1 MB in the beginning and 75.2 MB in the end (delta: -2.1 MB). Peak memory consumption was 47.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:47:32,653 INFO L168 Benchmark]: Boogie Procedure Inliner took 186.30 ms. Allocated memory is still 109.1 MB. Free memory was 74.7 MB in the beginning and 60.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:47:32,653 INFO L168 Benchmark]: Boogie Preprocessor took 138.05 ms. Allocated memory is still 109.1 MB. Free memory was 60.6 MB in the beginning and 49.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:47:32,654 INFO L168 Benchmark]: RCFGBuilder took 4718.59 ms. Allocated memory was 109.1 MB in the beginning and 218.1 MB in the end (delta: 109.1 MB). Free memory was 49.4 MB in the beginning and 104.4 MB in the end (delta: -55.0 MB). Peak memory consumption was 79.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:47:32,654 INFO L168 Benchmark]: TraceAbstraction took 28829.18 ms. Allocated memory was 218.1 MB in the beginning and 1.0 GB in the end (delta: 786.4 MB). Free memory was 104.4 MB in the beginning and 491.8 MB in the end (delta: -387.4 MB). Peak memory consumption was 399.0 MB. Max. memory is 16.1 GB. [2020-11-30 02:47:32,655 INFO L168 Benchmark]: Witness Printer took 393.54 ms. Allocated memory is still 1.0 GB. Free memory was 491.8 MB in the beginning and 454.0 MB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:47:32,657 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 79.7 MB. Free memory was 37.5 MB in the beginning and 37.5 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1172.76 ms. Allocated memory is still 109.1 MB. Free memory was 73.1 MB in the beginning and 75.2 MB in the end (delta: -2.1 MB). Peak memory consumption was 47.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 186.30 ms. Allocated memory is still 109.1 MB. Free memory was 74.7 MB in the beginning and 60.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 138.05 ms. Allocated memory is still 109.1 MB. Free memory was 60.6 MB in the beginning and 49.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4718.59 ms. Allocated memory was 109.1 MB in the beginning and 218.1 MB in the end (delta: 109.1 MB). Free memory was 49.4 MB in the beginning and 104.4 MB in the end (delta: -55.0 MB). Peak memory consumption was 79.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 28829.18 ms. Allocated memory was 218.1 MB in the beginning and 1.0 GB in the end (delta: 786.4 MB). Free memory was 104.4 MB in the beginning and 491.8 MB in the end (delta: -387.4 MB). Peak memory consumption was 399.0 MB. Max. memory is 16.1 GB. * Witness Printer took 393.54 ms. Allocated memory is still 1.0 GB. Free memory was 491.8 MB in the beginning and 454.0 MB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 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: 1662]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1668]: Loop Invariant Derived loop invariant: ((((((((a27 == 1 && a11 == 0) || ((a6 == 0 && a26 <= 0) && (a27 == 1 || a11 == 1))) || 1 <= a3) || (a12 == 1 && a27 == 0)) || ((a12 == 1 && a26 == 1) && (a27 == 1 || a11 == 1))) || a11 == 1) || a6 == 1) || (a27 == 1 && a12 == 0)) || (a5 == 1 && (a27 == 1 || a11 == 1)) - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: ((((((((a27 == 1 && a11 == 0) || ((a6 == 0 && a26 <= 0) && (a27 == 1 || a11 == 1))) || 1 <= a3) || (a12 == 1 && a27 == 0)) || ((a12 == 1 && a26 == 1) && (a27 == 1 || a11 == 1))) || a11 == 1) || a6 == 1) || (a27 == 1 && a12 == 0)) || (a5 == 1 && (a27 == 1 || a11 == 1)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 148 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 27.6s, OverallIterations: 12, TraceHistogramMax: 7, AutomataDifference: 17.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1305 SDtfs, 1085 SDslu, 67 SDs, 0 SdLazy, 6206 SolverSat, 1673 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1994 GetRequests, 1971 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34323occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 1718 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 577 NumberOfFragments, 141 HoareAnnotationTreeSize, 3 FomulaSimplifications, 19470 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 3 FomulaSimplificationsInter, 82 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 3433 NumberOfCodeBlocks, 3433 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 4399 ConstructedInterpolants, 0 QuantifiedInterpolants, 3486435 SizeOfPredicates, 39 NumberOfNonLiveVariables, 2028 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 1954/1978 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...