./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label43.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_0be7c800-a643-40cd-90f2-41e902f2a851/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0be7c800-a643-40cd-90f2-41e902f2a851/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0be7c800-a643-40cd-90f2-41e902f2a851/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0be7c800-a643-40cd-90f2-41e902f2a851/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label43.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0be7c800-a643-40cd-90f2-41e902f2a851/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0be7c800-a643-40cd-90f2-41e902f2a851/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 454dd493ee9dcdf0cdb95ddac4747f0f0acba84f ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:49:00,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:49:00,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:49:00,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:49:00,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:49:00,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:49:00,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:49:00,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:49:00,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:49:00,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:49:00,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:49:00,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:49:00,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:49:00,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:49:00,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:49:00,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:49:00,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:49:00,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:49:00,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:49:00,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:49:00,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:49:00,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:49:00,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:49:00,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:49:00,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:49:00,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:49:00,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:49:00,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:49:00,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:49:00,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:49:00,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:49:00,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:49:00,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:49:00,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:49:00,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:49:00,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:49:00,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:49:00,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:49:00,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:49:00,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:49:00,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:49:00,747 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0be7c800-a643-40cd-90f2-41e902f2a851/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:49:00,792 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:49:00,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:49:00,794 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:49:00,794 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:49:00,794 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:49:00,795 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:49:00,795 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:49:00,795 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:49:00,796 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:49:00,796 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:49:00,796 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:49:00,796 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:49:00,797 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:49:00,797 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:49:00,797 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:49:00,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:49:00,799 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:49:00,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:49:00,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:49:00,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:49:00,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:49:00,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:49:00,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:49:00,801 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:49:00,801 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:49:00,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:49:00,802 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:49:00,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:49:00,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:49:00,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:49:00,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:49:00,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:49:00,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:49:00,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:49:00,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:49:00,805 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:49:00,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:49:00,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:49:00,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:49:00,806 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:49:00,806 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_0be7c800-a643-40cd-90f2-41e902f2a851/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0be7c800-a643-40cd-90f2-41e902f2a851/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 454dd493ee9dcdf0cdb95ddac4747f0f0acba84f [2020-11-30 02:49:01,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:49:01,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:49:01,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:49:01,250 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:49:01,250 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:49:01,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0be7c800-a643-40cd-90f2-41e902f2a851/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label43.c [2020-11-30 02:49:01,336 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0be7c800-a643-40cd-90f2-41e902f2a851/bin/utaipan/data/6c59bc792/62304a5b6264432695594d0811ffa738/FLAG25026cee5 [2020-11-30 02:49:02,055 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:49:02,056 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0be7c800-a643-40cd-90f2-41e902f2a851/sv-benchmarks/c/eca-rers2012/Problem01_label43.c [2020-11-30 02:49:02,073 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0be7c800-a643-40cd-90f2-41e902f2a851/bin/utaipan/data/6c59bc792/62304a5b6264432695594d0811ffa738/FLAG25026cee5 [2020-11-30 02:49:02,249 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0be7c800-a643-40cd-90f2-41e902f2a851/bin/utaipan/data/6c59bc792/62304a5b6264432695594d0811ffa738 [2020-11-30 02:49:02,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:49:02,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:49:02,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:49:02,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:49:02,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:49:02,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:49:02" (1/1) ... [2020-11-30 02:49:02,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63da98ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:02, skipping insertion in model container [2020-11-30 02:49:02,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:49:02" (1/1) ... [2020-11-30 02:49:02,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:49:02,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:49:02,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:49:02,970 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:49:03,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:49:03,091 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:49:03,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:03 WrapperNode [2020-11-30 02:49:03,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:49:03,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:49:03,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:49:03,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:49:03,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:03" (1/1) ... [2020-11-30 02:49:03,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:03" (1/1) ... [2020-11-30 02:49:03,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:49:03,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:49:03,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:49:03,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:49:03,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:03" (1/1) ... [2020-11-30 02:49:03,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:03" (1/1) ... [2020-11-30 02:49:03,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:03" (1/1) ... [2020-11-30 02:49:03,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:03" (1/1) ... [2020-11-30 02:49:03,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:03" (1/1) ... [2020-11-30 02:49:03,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:03" (1/1) ... [2020-11-30 02:49:03,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:03" (1/1) ... [2020-11-30 02:49:03,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:49:03,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:49:03,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:49:03,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:49:03,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0be7c800-a643-40cd-90f2-41e902f2a851/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 02:49:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:49:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:49:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:49:03,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:49:06,370 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:49:06,371 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 02:49:06,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:49:06 BoogieIcfgContainer [2020-11-30 02:49:06,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:49:06,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:49:06,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:49:06,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:49:06,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:49:02" (1/3) ... [2020-11-30 02:49:06,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d9cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:49:06, skipping insertion in model container [2020-11-30 02:49:06,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:03" (2/3) ... [2020-11-30 02:49:06,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d9cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:49:06, skipping insertion in model container [2020-11-30 02:49:06,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:49:06" (3/3) ... [2020-11-30 02:49:06,386 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label43.c [2020-11-30 02:49:06,402 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:49:06,407 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:49:06,422 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:49:06,467 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:49:06,467 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:49:06,467 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:49:06,468 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:49:06,469 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:49:06,469 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:49:06,469 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:49:06,469 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:49:06,494 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-30 02:49:06,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-30 02:49:06,511 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:49:06,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:49:06,513 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:49:06,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:49:06,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1520714605, now seen corresponding path program 1 times [2020-11-30 02:49:06,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:49:06,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511628463] [2020-11-30 02:49:06,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:49:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:49:07,100 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 02:49:07,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511628463] [2020-11-30 02:49:07,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:49:07,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:49:07,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026496505] [2020-11-30 02:49:07,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:49:07,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:49:07,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:49:07,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:49:07,128 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-30 02:49:07,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:49:07,942 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-30 02:49:07,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:49:07,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-30 02:49:07,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:49:07,959 INFO L225 Difference]: With dead ends: 224 [2020-11-30 02:49:07,959 INFO L226 Difference]: Without dead ends: 145 [2020-11-30 02:49:07,963 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 02:49:07,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-30 02:49:08,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-30 02:49:08,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-30 02:49:08,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 271 transitions. [2020-11-30 02:49:08,057 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 271 transitions. Word has length 71 [2020-11-30 02:49:08,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:49:08,059 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 271 transitions. [2020-11-30 02:49:08,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:49:08,059 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 271 transitions. [2020-11-30 02:49:08,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-30 02:49:08,063 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:49:08,064 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] [2020-11-30 02:49:08,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:49:08,064 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:49:08,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:49:08,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1350081343, now seen corresponding path program 1 times [2020-11-30 02:49:08,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:49:08,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62509749] [2020-11-30 02:49:08,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:49:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:49:08,148 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 02:49:08,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62509749] [2020-11-30 02:49:08,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:49:08,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:49:08,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986436525] [2020-11-30 02:49:08,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:49:08,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:49:08,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:49:08,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:49:08,160 INFO L87 Difference]: Start difference. First operand 145 states and 271 transitions. Second operand 3 states. [2020-11-30 02:49:09,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:49:09,039 INFO L93 Difference]: Finished difference Result 433 states and 811 transitions. [2020-11-30 02:49:09,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:49:09,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-11-30 02:49:09,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:49:09,044 INFO L225 Difference]: With dead ends: 433 [2020-11-30 02:49:09,044 INFO L226 Difference]: Without dead ends: 289 [2020-11-30 02:49:09,046 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 02:49:09,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-11-30 02:49:09,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2020-11-30 02:49:09,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-30 02:49:09,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 504 transitions. [2020-11-30 02:49:09,072 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 504 transitions. Word has length 76 [2020-11-30 02:49:09,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:49:09,073 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 504 transitions. [2020-11-30 02:49:09,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:49:09,073 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 504 transitions. [2020-11-30 02:49:09,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-30 02:49:09,077 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:49:09,078 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:49:09,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:49:09,078 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:49:09,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:49:09,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1863723950, now seen corresponding path program 1 times [2020-11-30 02:49:09,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:49:09,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274093297] [2020-11-30 02:49:09,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:49:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:49:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:49:09,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274093297] [2020-11-30 02:49:09,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:49:09,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:49:09,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795644210] [2020-11-30 02:49:09,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:49:09,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:49:09,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:49:09,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:49:09,231 INFO L87 Difference]: Start difference. First operand 287 states and 504 transitions. Second operand 4 states. [2020-11-30 02:49:10,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:49:10,206 INFO L93 Difference]: Finished difference Result 999 states and 1753 transitions. [2020-11-30 02:49:10,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:49:10,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-11-30 02:49:10,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:49:10,213 INFO L225 Difference]: With dead ends: 999 [2020-11-30 02:49:10,213 INFO L226 Difference]: Without dead ends: 713 [2020-11-30 02:49:10,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:49:10,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-11-30 02:49:10,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2020-11-30 02:49:10,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-11-30 02:49:10,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1106 transitions. [2020-11-30 02:49:10,266 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1106 transitions. Word has length 83 [2020-11-30 02:49:10,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:49:10,266 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1106 transitions. [2020-11-30 02:49:10,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:49:10,266 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1106 transitions. [2020-11-30 02:49:10,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-30 02:49:10,272 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:49:10,273 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-30 02:49:10,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:49:10,273 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:49:10,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:49:10,274 INFO L82 PathProgramCache]: Analyzing trace with hash 228747048, now seen corresponding path program 1 times [2020-11-30 02:49:10,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:49:10,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534365654] [2020-11-30 02:49:10,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:49:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:49:10,357 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:49:10,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534365654] [2020-11-30 02:49:10,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:49:10,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:49:10,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279974422] [2020-11-30 02:49:10,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:49:10,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:49:10,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:49:10,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:49:10,359 INFO L87 Difference]: Start difference. First operand 713 states and 1106 transitions. Second operand 3 states. [2020-11-30 02:49:10,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:49:10,908 INFO L93 Difference]: Finished difference Result 1780 states and 2693 transitions. [2020-11-30 02:49:10,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:49:10,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-11-30 02:49:10,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:49:10,920 INFO L225 Difference]: With dead ends: 1780 [2020-11-30 02:49:10,920 INFO L226 Difference]: Without dead ends: 1068 [2020-11-30 02:49:10,926 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 02:49:10,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-11-30 02:49:10,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2020-11-30 02:49:10,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-30 02:49:10,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1361 transitions. [2020-11-30 02:49:10,987 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1361 transitions. Word has length 86 [2020-11-30 02:49:10,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:49:10,990 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1361 transitions. [2020-11-30 02:49:10,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:49:10,990 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1361 transitions. [2020-11-30 02:49:10,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-11-30 02:49:10,995 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:49:10,995 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:49:10,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:49:10,996 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:49:10,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:49:10,997 INFO L82 PathProgramCache]: Analyzing trace with hash -222273252, now seen corresponding path program 1 times [2020-11-30 02:49:10,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:49:10,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707852370] [2020-11-30 02:49:10,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:49:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:49:11,093 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-30 02:49:11,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707852370] [2020-11-30 02:49:11,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:49:11,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:49:11,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416427358] [2020-11-30 02:49:11,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:49:11,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:49:11,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:49:11,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:49:11,098 INFO L87 Difference]: Start difference. First operand 926 states and 1361 transitions. Second operand 3 states. [2020-11-30 02:49:11,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:49:11,777 INFO L93 Difference]: Finished difference Result 2206 states and 3300 transitions. [2020-11-30 02:49:11,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:49:11,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-11-30 02:49:11,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:49:11,787 INFO L225 Difference]: With dead ends: 2206 [2020-11-30 02:49:11,787 INFO L226 Difference]: Without dead ends: 1210 [2020-11-30 02:49:11,789 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 02:49:11,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-11-30 02:49:11,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2020-11-30 02:49:11,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-30 02:49:11,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1378 transitions. [2020-11-30 02:49:11,834 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1378 transitions. Word has length 87 [2020-11-30 02:49:11,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:49:11,834 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1378 transitions. [2020-11-30 02:49:11,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:49:11,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1378 transitions. [2020-11-30 02:49:11,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-30 02:49:11,845 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:49:11,845 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2020-11-30 02:49:11,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 02:49:11,846 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:49:11,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:49:11,848 INFO L82 PathProgramCache]: Analyzing trace with hash 843645014, now seen corresponding path program 1 times [2020-11-30 02:49:11,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:49:11,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377617412] [2020-11-30 02:49:11,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:49:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:49:11,986 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-30 02:49:11,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377617412] [2020-11-30 02:49:11,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:49:11,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:49:11,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081656657] [2020-11-30 02:49:11,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:49:11,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:49:11,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:49:11,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:49:11,989 INFO L87 Difference]: Start difference. First operand 1068 states and 1378 transitions. Second operand 4 states. [2020-11-30 02:49:12,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:49:12,730 INFO L93 Difference]: Finished difference Result 2206 states and 2841 transitions. [2020-11-30 02:49:12,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:49:12,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-11-30 02:49:12,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:49:12,744 INFO L225 Difference]: With dead ends: 2206 [2020-11-30 02:49:12,744 INFO L226 Difference]: Without dead ends: 1139 [2020-11-30 02:49:12,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:49:12,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-11-30 02:49:12,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2020-11-30 02:49:12,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-11-30 02:49:12,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1394 transitions. [2020-11-30 02:49:12,789 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1394 transitions. Word has length 91 [2020-11-30 02:49:12,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:49:12,789 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1394 transitions. [2020-11-30 02:49:12,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:49:12,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1394 transitions. [2020-11-30 02:49:12,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-11-30 02:49:12,802 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:49:12,802 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:49:12,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 02:49:12,803 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:49:12,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:49:12,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1911055162, now seen corresponding path program 1 times [2020-11-30 02:49:12,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:49:12,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549180918] [2020-11-30 02:49:12,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:49:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:49:12,987 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-11-30 02:49:12,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549180918] [2020-11-30 02:49:12,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:49:12,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:49:12,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605491926] [2020-11-30 02:49:12,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:49:12,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:49:12,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:49:12,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:49:12,990 INFO L87 Difference]: Start difference. First operand 1139 states and 1394 transitions. Second operand 4 states. [2020-11-30 02:49:13,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:49:13,746 INFO L93 Difference]: Finished difference Result 2277 states and 2787 transitions. [2020-11-30 02:49:13,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:49:13,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-11-30 02:49:13,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:49:13,756 INFO L225 Difference]: With dead ends: 2277 [2020-11-30 02:49:13,756 INFO L226 Difference]: Without dead ends: 1139 [2020-11-30 02:49:13,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:49:13,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-11-30 02:49:13,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2020-11-30 02:49:13,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-11-30 02:49:13,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1373 transitions. [2020-11-30 02:49:13,817 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1373 transitions. Word has length 120 [2020-11-30 02:49:13,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:49:13,818 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1373 transitions. [2020-11-30 02:49:13,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:49:13,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1373 transitions. [2020-11-30 02:49:13,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-11-30 02:49:13,822 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:49:13,822 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:49:13,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 02:49:13,823 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:49:13,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:49:13,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1506076615, now seen corresponding path program 1 times [2020-11-30 02:49:13,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:49:13,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155974287] [2020-11-30 02:49:13,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:49:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:49:13,954 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 02:49:13,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155974287] [2020-11-30 02:49:13,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:49:13,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:49:13,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919694779] [2020-11-30 02:49:13,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:49:13,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:49:13,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:49:13,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:49:13,958 INFO L87 Difference]: Start difference. First operand 1139 states and 1373 transitions. Second operand 3 states. [2020-11-30 02:49:14,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:49:14,472 INFO L93 Difference]: Finished difference Result 2561 states and 3091 transitions. [2020-11-30 02:49:14,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:49:14,475 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2020-11-30 02:49:14,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:49:14,485 INFO L225 Difference]: With dead ends: 2561 [2020-11-30 02:49:14,485 INFO L226 Difference]: Without dead ends: 1423 [2020-11-30 02:49:14,487 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 02:49:14,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2020-11-30 02:49:14,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1210. [2020-11-30 02:49:14,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-11-30 02:49:14,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1460 transitions. [2020-11-30 02:49:14,528 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1460 transitions. Word has length 137 [2020-11-30 02:49:14,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:49:14,529 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1460 transitions. [2020-11-30 02:49:14,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:49:14,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1460 transitions. [2020-11-30 02:49:14,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-11-30 02:49:14,532 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:49:14,533 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 02:49:14,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 02:49:14,533 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:49:14,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:49:14,534 INFO L82 PathProgramCache]: Analyzing trace with hash 445246804, now seen corresponding path program 1 times [2020-11-30 02:49:14,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:49:14,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517686294] [2020-11-30 02:49:14,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:49:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:49:14,749 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:49:14,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517686294] [2020-11-30 02:49:14,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:49:14,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:49:14,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193312220] [2020-11-30 02:49:14,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:49:14,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:49:14,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:49:14,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:49:14,760 INFO L87 Difference]: Start difference. First operand 1210 states and 1460 transitions. Second operand 4 states. [2020-11-30 02:49:15,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:49:15,382 INFO L93 Difference]: Finished difference Result 2670 states and 3189 transitions. [2020-11-30 02:49:15,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:49:15,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-11-30 02:49:15,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:49:15,393 INFO L225 Difference]: With dead ends: 2670 [2020-11-30 02:49:15,393 INFO L226 Difference]: Without dead ends: 1461 [2020-11-30 02:49:15,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:49:15,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2020-11-30 02:49:15,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1352. [2020-11-30 02:49:15,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-11-30 02:49:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1574 transitions. [2020-11-30 02:49:15,437 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1574 transitions. Word has length 155 [2020-11-30 02:49:15,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:49:15,439 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1574 transitions. [2020-11-30 02:49:15,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:49:15,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1574 transitions. [2020-11-30 02:49:15,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-11-30 02:49:15,445 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:49:15,445 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:49:15,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 02:49:15,446 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:49:15,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:49:15,446 INFO L82 PathProgramCache]: Analyzing trace with hash 2043507405, now seen corresponding path program 1 times [2020-11-30 02:49:15,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:49:15,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331438684] [2020-11-30 02:49:15,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:49:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:49:15,638 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 02:49:15,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331438684] [2020-11-30 02:49:15,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:49:15,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:49:15,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999543638] [2020-11-30 02:49:15,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:49:15,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:49:15,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:49:15,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:49:15,641 INFO L87 Difference]: Start difference. First operand 1352 states and 1574 transitions. Second operand 3 states. [2020-11-30 02:49:16,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:49:16,159 INFO L93 Difference]: Finished difference Result 2845 states and 3357 transitions. [2020-11-30 02:49:16,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:49:16,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2020-11-30 02:49:16,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:49:16,171 INFO L225 Difference]: With dead ends: 2845 [2020-11-30 02:49:16,172 INFO L226 Difference]: Without dead ends: 1494 [2020-11-30 02:49:16,174 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 02:49:16,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2020-11-30 02:49:16,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1494. [2020-11-30 02:49:16,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-11-30 02:49:16,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1738 transitions. [2020-11-30 02:49:16,219 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1738 transitions. Word has length 168 [2020-11-30 02:49:16,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:49:16,220 INFO L481 AbstractCegarLoop]: Abstraction has 1494 states and 1738 transitions. [2020-11-30 02:49:16,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:49:16,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1738 transitions. [2020-11-30 02:49:16,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-11-30 02:49:16,224 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:49:16,224 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:49:16,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 02:49:16,225 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:49:16,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:49:16,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1479947029, now seen corresponding path program 1 times [2020-11-30 02:49:16,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:49:16,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927305262] [2020-11-30 02:49:16,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:49:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:49:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-11-30 02:49:16,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927305262] [2020-11-30 02:49:16,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:49:16,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:49:16,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501239694] [2020-11-30 02:49:16,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:49:16,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:49:16,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:49:16,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:49:16,487 INFO L87 Difference]: Start difference. First operand 1494 states and 1738 transitions. Second operand 3 states. [2020-11-30 02:49:17,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:49:17,027 INFO L93 Difference]: Finished difference Result 3413 states and 3982 transitions. [2020-11-30 02:49:17,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:49:17,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2020-11-30 02:49:17,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:49:17,041 INFO L225 Difference]: With dead ends: 3413 [2020-11-30 02:49:17,041 INFO L226 Difference]: Without dead ends: 1920 [2020-11-30 02:49:17,045 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 02:49:17,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2020-11-30 02:49:17,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1068. [2020-11-30 02:49:17,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-30 02:49:17,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1273 transitions. [2020-11-30 02:49:17,096 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1273 transitions. Word has length 177 [2020-11-30 02:49:17,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:49:17,097 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1273 transitions. [2020-11-30 02:49:17,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:49:17,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1273 transitions. [2020-11-30 02:49:17,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-11-30 02:49:17,103 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:49:17,104 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:49:17,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 02:49:17,104 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:49:17,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:49:17,105 INFO L82 PathProgramCache]: Analyzing trace with hash -588452363, now seen corresponding path program 1 times [2020-11-30 02:49:17,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:49:17,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847215359] [2020-11-30 02:49:17,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:49:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:49:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 256 proven. 142 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-30 02:49:17,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847215359] [2020-11-30 02:49:17,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96831227] [2020-11-30 02:49:17,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0be7c800-a643-40cd-90f2-41e902f2a851/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 02:49:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:49:17,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:49:17,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:49:18,140 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-11-30 02:49:18,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:49:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-11-30 02:49:18,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:49:18,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2020-11-30 02:49:18,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267703214] [2020-11-30 02:49:18,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:49:18,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:49:18,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:49:18,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:49:18,257 INFO L87 Difference]: Start difference. First operand 1068 states and 1273 transitions. Second operand 3 states. [2020-11-30 02:49:19,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:49:19,001 INFO L93 Difference]: Finished difference Result 2348 states and 2803 transitions. [2020-11-30 02:49:19,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:49:19,004 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-11-30 02:49:19,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:49:19,012 INFO L225 Difference]: With dead ends: 2348 [2020-11-30 02:49:19,012 INFO L226 Difference]: Without dead ends: 1281 [2020-11-30 02:49:19,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 481 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:49:19,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-11-30 02:49:19,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1210. [2020-11-30 02:49:19,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-11-30 02:49:19,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1418 transitions. [2020-11-30 02:49:19,070 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1418 transitions. Word has length 241 [2020-11-30 02:49:19,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:49:19,071 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1418 transitions. [2020-11-30 02:49:19,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:49:19,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1418 transitions. [2020-11-30 02:49:19,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-11-30 02:49:19,077 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:49:19,080 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:49:19,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-30 02:49:19,300 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:49:19,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:49:19,301 INFO L82 PathProgramCache]: Analyzing trace with hash 968680822, now seen corresponding path program 1 times [2020-11-30 02:49:19,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:49:19,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823951708] [2020-11-30 02:49:19,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:49:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:49:19,980 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 313 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:49:19,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823951708] [2020-11-30 02:49:19,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708849099] [2020-11-30 02:49:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0be7c800-a643-40cd-90f2-41e902f2a851/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 02:49:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:49:20,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:49:20,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:49:20,297 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-11-30 02:49:20,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:49:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-11-30 02:49:20,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:49:20,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2020-11-30 02:49:20,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24039108] [2020-11-30 02:49:20,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:49:20,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:49:20,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:49:20,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:49:20,383 INFO L87 Difference]: Start difference. First operand 1210 states and 1418 transitions. Second operand 3 states. [2020-11-30 02:49:20,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:49:20,901 INFO L93 Difference]: Finished difference Result 2488 states and 2893 transitions. [2020-11-30 02:49:20,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:49:20,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 274 [2020-11-30 02:49:20,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:49:20,903 INFO L225 Difference]: With dead ends: 2488 [2020-11-30 02:49:20,903 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:49:20,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 545 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:49:20,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:49:20,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:49:20,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:49:20,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:49:20,906 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 274 [2020-11-30 02:49:20,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:49:20,907 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:49:20,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:49:20,907 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:49:20,907 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:49:21,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-30 02:49:21,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:49:21,216 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 59 [2020-11-30 02:49:21,564 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 33 [2020-11-30 02:49:21,792 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 33 [2020-11-30 02:49:21,796 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-30 02:49:21,796 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-30 02:49:21,796 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-30 02:49:21,796 INFO L274 CegarLoopResult]: For program point L566-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 02:49:21,796 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-30 02:49:21,796 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-30 02:49:21,797 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-30 02:49:21,797 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-30 02:49:21,797 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-30 02:49:21,797 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-30 02:49:21,797 INFO L274 CegarLoopResult]: For program point L569-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 02:49:21,797 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-30 02:49:21,797 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-30 02:49:21,797 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-30 02:49:21,797 INFO L274 CegarLoopResult]: For program point L570(line 570) no Hoare annotation was computed. [2020-11-30 02:49:21,797 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-30 02:49:21,797 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-30 02:49:21,797 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-30 02:49:21,797 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-30 02:49:21,798 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-30 02:49:21,798 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-30 02:49:21,798 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-30 02:49:21,798 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-30 02:49:21,798 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-30 02:49:21,798 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-30 02:49:21,798 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-30 02:49:21,798 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-30 02:49:21,798 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-30 02:49:21,798 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-30 02:49:21,798 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-30 02:49:21,798 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-30 02:49:21,798 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-30 02:49:21,799 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-30 02:49:21,799 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-30 02:49:21,799 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-30 02:49:21,799 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-30 02:49:21,799 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-30 02:49:21,799 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-30 02:49:21,799 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-30 02:49:21,799 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:49:21,799 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-30 02:49:21,799 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-30 02:49:21,799 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-30 02:49:21,800 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse4 (= ~a20~0 1))) (let ((.cse2 (= ~a16~0 6)) (.cse1 (not .cse4)) (.cse0 (<= ~a16~0 5)) (.cse3 (<= ~a21~0 0))) (or (and .cse0 (not (= ~a7~0 1)) .cse1) (and .cse2 .cse3) (and (<= ~a16~0 4) .cse4 (= ~a17~0 1)) (and .cse2 .cse1 (<= 15 ~a8~0)) (and (= ~a21~0 1) .cse4) (and (<= 14 ~a8~0) .cse0 .cse1) (and .cse0 .cse3)))) [2020-11-30 02:49:21,800 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-30 02:49:21,800 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-30 02:49:21,800 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-30 02:49:21,800 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-30 02:49:21,800 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-30 02:49:21,800 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-30 02:49:21,800 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-30 02:49:21,800 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:49:21,800 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-30 02:49:21,801 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-30 02:49:21,801 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-30 02:49:21,801 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-30 02:49:21,801 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-30 02:49:21,801 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-30 02:49:21,801 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-30 02:49:21,801 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-30 02:49:21,801 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-30 02:49:21,801 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-30 02:49:21,801 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-30 02:49:21,801 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-30 02:49:21,801 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-30 02:49:21,801 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-30 02:49:21,802 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-30 02:49:21,802 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse4 (= ~a20~0 1))) (let ((.cse2 (= ~a16~0 6)) (.cse1 (not .cse4)) (.cse0 (<= ~a16~0 5)) (.cse3 (<= ~a21~0 0))) (or (and .cse0 (not (= ~a7~0 1)) .cse1) (and .cse2 .cse3) (and (<= ~a16~0 4) .cse4 (= ~a17~0 1)) (and .cse2 .cse1 (<= 15 ~a8~0)) (and (= ~a21~0 1) .cse4) (and (<= 14 ~a8~0) .cse0 .cse1) (and .cse0 .cse3)))) [2020-11-30 02:49:21,802 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-30 02:49:21,802 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 02:49:21,802 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-30 02:49:21,802 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-30 02:49:21,802 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-30 02:49:21,802 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-30 02:49:21,802 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-30 02:49:21,802 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-30 02:49:21,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:49:21 BoogieIcfgContainer [2020-11-30 02:49:21,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:49:21,857 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:49:21,857 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:49:21,857 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:49:21,858 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:49:06" (3/4) ... [2020-11-30 02:49:21,861 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:49:21,886 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2020-11-30 02:49:21,892 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-30 02:49:21,894 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-30 02:49:21,896 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-30 02:49:22,070 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0be7c800-a643-40cd-90f2-41e902f2a851/bin/utaipan/witness.graphml [2020-11-30 02:49:22,070 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:49:22,072 INFO L168 Benchmark]: Toolchain (without parser) took 19817.31 ms. Allocated memory was 121.6 MB in the beginning and 373.3 MB in the end (delta: 251.7 MB). Free memory was 87.9 MB in the beginning and 285.1 MB in the end (delta: -197.2 MB). Peak memory consumption was 54.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:49:22,072 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 77.6 MB. Free memory was 35.2 MB in the beginning and 35.2 MB in the end (delta: 36.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:49:22,072 INFO L168 Benchmark]: CACSL2BoogieTranslator took 831.29 ms. Allocated memory is still 121.6 MB. Free memory was 87.9 MB in the beginning and 81.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:49:22,073 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.73 ms. Allocated memory is still 121.6 MB. Free memory was 81.0 MB in the beginning and 75.4 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:49:22,073 INFO L168 Benchmark]: Boogie Preprocessor took 73.00 ms. Allocated memory is still 121.6 MB. Free memory was 74.7 MB in the beginning and 70.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:49:22,074 INFO L168 Benchmark]: RCFGBuilder took 3108.16 ms. Allocated memory was 121.6 MB in the beginning and 151.0 MB in the end (delta: 29.4 MB). Free memory was 70.5 MB in the beginning and 109.0 MB in the end (delta: -38.4 MB). Peak memory consumption was 52.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:49:22,074 INFO L168 Benchmark]: TraceAbstraction took 15480.07 ms. Allocated memory was 151.0 MB in the beginning and 373.3 MB in the end (delta: 222.3 MB). Free memory was 108.0 MB in the beginning and 300.9 MB in the end (delta: -192.9 MB). Peak memory consumption was 210.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:49:22,075 INFO L168 Benchmark]: Witness Printer took 214.03 ms. Allocated memory is still 373.3 MB. Free memory was 300.9 MB in the beginning and 285.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:49:22,078 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 77.6 MB. Free memory was 35.2 MB in the beginning and 35.2 MB in the end (delta: 36.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 831.29 ms. Allocated memory is still 121.6 MB. Free memory was 87.9 MB in the beginning and 81.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.73 ms. Allocated memory is still 121.6 MB. Free memory was 81.0 MB in the beginning and 75.4 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.00 ms. Allocated memory is still 121.6 MB. Free memory was 74.7 MB in the beginning and 70.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3108.16 ms. Allocated memory was 121.6 MB in the beginning and 151.0 MB in the end (delta: 29.4 MB). Free memory was 70.5 MB in the beginning and 109.0 MB in the end (delta: -38.4 MB). Peak memory consumption was 52.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15480.07 ms. Allocated memory was 151.0 MB in the beginning and 373.3 MB in the end (delta: 222.3 MB). Free memory was 108.0 MB in the beginning and 300.9 MB in the end (delta: -192.9 MB). Peak memory consumption was 210.9 MB. Max. memory is 16.1 GB. * Witness Printer took 214.03 ms. Allocated memory is still 373.3 MB. Free memory was 300.9 MB in the beginning and 285.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((a16 <= 5 && !(a7 == 1)) && !(a20 == 1)) || (a16 == 6 && a21 <= 0)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || ((a16 == 6 && !(a20 == 1)) && 15 <= a8)) || (a21 == 1 && a20 == 1)) || ((14 <= a8 && a16 <= 5) && !(a20 == 1))) || (a16 <= 5 && a21 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((a16 <= 5 && !(a7 == 1)) && !(a20 == 1)) || (a16 == 6 && a21 <= 0)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || ((a16 == 6 && !(a20 == 1)) && 15 <= a8)) || (a21 == 1 && a20 == 1)) || ((14 <= a8 && a16 <= 5) && !(a20 == 1))) || (a16 <= 5 && a21 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.6s, OverallIterations: 13, TraceHistogramMax: 7, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 626 SDtfs, 1036 SDslu, 60 SDs, 0 SdLazy, 2988 SolverSat, 771 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1069 GetRequests, 1040 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1494occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 1531 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 133 HoareAnnotationTreeSize, 3 FomulaSimplifications, 4792 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 784 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 2281 NumberOfCodeBlocks, 2281 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2779 ConstructedInterpolants, 0 QuantifiedInterpolants, 2050286 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1117 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 17 InterpolantComputations, 15 PerfectInterpolantSequences, 2953/3226 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...