./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label01.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_50106f2c-09e7-48b3-ad1d-249ce6dd4944/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_50106f2c-09e7-48b3-ad1d-249ce6dd4944/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_50106f2c-09e7-48b3-ad1d-249ce6dd4944/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_50106f2c-09e7-48b3-ad1d-249ce6dd4944/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label01.c -s /tmp/vcloud-vcloud-master/worker/run_dir_50106f2c-09e7-48b3-ad1d-249ce6dd4944/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_50106f2c-09e7-48b3-ad1d-249ce6dd4944/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 81c0ce4bbe6e9ab2e32ee97298c1b567b29fd94b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:38:47,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:38:47,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:38:47,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:38:47,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:38:47,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:38:47,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:38:47,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:38:47,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:38:47,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:38:47,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:38:47,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:38:47,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:38:47,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:38:47,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:38:47,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:38:47,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:38:47,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:38:48,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:38:48,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:38:48,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:38:48,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:38:48,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:38:48,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:38:48,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:38:48,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:38:48,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:38:48,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:38:48,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:38:48,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:38:48,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:38:48,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:38:48,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:38:48,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:38:48,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:38:48,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:38:48,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:38:48,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:38:48,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:38:48,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:38:48,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:38:48,049 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_50106f2c-09e7-48b3-ad1d-249ce6dd4944/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:38:48,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:38:48,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:38:48,104 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:38:48,105 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:38:48,105 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:38:48,105 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:38:48,105 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:38:48,105 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:38:48,106 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:38:48,106 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:38:48,107 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:38:48,108 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:38:48,108 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:38:48,108 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:38:48,108 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:38:48,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:38:48,117 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:38:48,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:38:48,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:38:48,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:38:48,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:38:48,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:38:48,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:38:48,119 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:38:48,120 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:38:48,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:38:48,120 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:38:48,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:38:48,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:38:48,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:38:48,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:38:48,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:38:48,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:38:48,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:38:48,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:38:48,122 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:38:48,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:38:48,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:38:48,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:38:48,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:38:48,124 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_50106f2c-09e7-48b3-ad1d-249ce6dd4944/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_50106f2c-09e7-48b3-ad1d-249ce6dd4944/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81c0ce4bbe6e9ab2e32ee97298c1b567b29fd94b [2020-11-30 02:38:48,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:38:48,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:38:48,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:38:48,491 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:38:48,492 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:38:48,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_50106f2c-09e7-48b3-ad1d-249ce6dd4944/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label01.c [2020-11-30 02:38:48,570 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_50106f2c-09e7-48b3-ad1d-249ce6dd4944/bin/utaipan/data/5f81b98c3/4063712be4934c95b99b8adeea410892/FLAGda62f79a3 [2020-11-30 02:38:49,351 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:38:49,352 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_50106f2c-09e7-48b3-ad1d-249ce6dd4944/sv-benchmarks/c/eca-rers2012/Problem01_label01.c [2020-11-30 02:38:49,378 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_50106f2c-09e7-48b3-ad1d-249ce6dd4944/bin/utaipan/data/5f81b98c3/4063712be4934c95b99b8adeea410892/FLAGda62f79a3 [2020-11-30 02:38:49,456 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_50106f2c-09e7-48b3-ad1d-249ce6dd4944/bin/utaipan/data/5f81b98c3/4063712be4934c95b99b8adeea410892 [2020-11-30 02:38:49,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:38:49,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:38:49,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:38:49,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:38:49,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:38:49,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:38:49" (1/1) ... [2020-11-30 02:38:49,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dfaacf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:49, skipping insertion in model container [2020-11-30 02:38:49,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:38:49" (1/1) ... [2020-11-30 02:38:49,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:38:49,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:38:50,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:38:50,034 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:38:50,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:38:50,235 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:38:50,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:50 WrapperNode [2020-11-30 02:38:50,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:38:50,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:38:50,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:38:50,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:38:50,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:50" (1/1) ... [2020-11-30 02:38:50,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:50" (1/1) ... [2020-11-30 02:38:50,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:38:50,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:38:50,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:38:50,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:38:50,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:50" (1/1) ... [2020-11-30 02:38:50,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:50" (1/1) ... [2020-11-30 02:38:50,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:50" (1/1) ... [2020-11-30 02:38:50,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:50" (1/1) ... [2020-11-30 02:38:50,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:50" (1/1) ... [2020-11-30 02:38:50,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:50" (1/1) ... [2020-11-30 02:38:50,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:50" (1/1) ... [2020-11-30 02:38:50,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:38:50,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:38:50,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:38:50,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:38:50,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_50106f2c-09e7-48b3-ad1d-249ce6dd4944/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 02:38:50,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:38:50,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:38:50,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:38:50,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:38:53,075 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:38:53,075 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 02:38:53,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:38:53 BoogieIcfgContainer [2020-11-30 02:38:53,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:38:53,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:38:53,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:38:53,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:38:53,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:38:49" (1/3) ... [2020-11-30 02:38:53,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7377b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:38:53, skipping insertion in model container [2020-11-30 02:38:53,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:50" (2/3) ... [2020-11-30 02:38:53,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7377b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:38:53, skipping insertion in model container [2020-11-30 02:38:53,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:38:53" (3/3) ... [2020-11-30 02:38:53,088 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label01.c [2020-11-30 02:38:53,104 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:38:53,109 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:38:53,122 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:38:53,160 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:38:53,161 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:38:53,161 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:38:53,161 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:38:53,161 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:38:53,161 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:38:53,162 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:38:53,162 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:38:53,183 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-30 02:38:53,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-30 02:38:53,195 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:38:53,196 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 02:38:53,196 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:38:53,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:38:53,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1520705133, now seen corresponding path program 1 times [2020-11-30 02:38:53,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:38:53,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55075757] [2020-11-30 02:38:53,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:38:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:38:53,650 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 02:38:53,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55075757] [2020-11-30 02:38:53,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:38:53,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:38:53,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440364528] [2020-11-30 02:38:53,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:38:53,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:38:53,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:38:53,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:38:53,676 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-30 02:38:54,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:38:54,309 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-30 02:38:54,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:38:54,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-30 02:38:54,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:38:54,339 INFO L225 Difference]: With dead ends: 224 [2020-11-30 02:38:54,343 INFO L226 Difference]: Without dead ends: 145 [2020-11-30 02:38:54,352 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 02:38:54,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-30 02:38:54,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-30 02:38:54,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-30 02:38:54,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2020-11-30 02:38:54,427 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2020-11-30 02:38:54,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:38:54,428 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2020-11-30 02:38:54,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:38:54,429 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2020-11-30 02:38:54,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-30 02:38:54,434 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:38:54,435 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:38:54,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:38:54,435 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:38:54,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:38:54,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1975141054, now seen corresponding path program 1 times [2020-11-30 02:38:54,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:38:54,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67368032] [2020-11-30 02:38:54,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:38:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:38:54,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:38:54,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67368032] [2020-11-30 02:38:54,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:38:54,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:38:54,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381594451] [2020-11-30 02:38:54,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:38:54,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:38:54,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:38:54,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:38:54,518 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2020-11-30 02:38:55,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:38:55,073 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2020-11-30 02:38:55,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:38:55,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-11-30 02:38:55,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:38:55,076 INFO L225 Difference]: With dead ends: 431 [2020-11-30 02:38:55,077 INFO L226 Difference]: Without dead ends: 287 [2020-11-30 02:38:55,078 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 02:38:55,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-30 02:38:55,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-11-30 02:38:55,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-30 02:38:55,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 503 transitions. [2020-11-30 02:38:55,095 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 503 transitions. Word has length 77 [2020-11-30 02:38:55,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:38:55,095 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 503 transitions. [2020-11-30 02:38:55,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:38:55,096 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 503 transitions. [2020-11-30 02:38:55,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-11-30 02:38:55,099 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:38:55,099 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:38:55,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:38:55,099 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:38:55,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:38:55,100 INFO L82 PathProgramCache]: Analyzing trace with hash -55059217, now seen corresponding path program 1 times [2020-11-30 02:38:55,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:38:55,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152576127] [2020-11-30 02:38:55,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:38:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:38:55,248 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:38:55,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152576127] [2020-11-30 02:38:55,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:38:55,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:38:55,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474625167] [2020-11-30 02:38:55,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:38:55,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:38:55,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:38:55,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:38:55,253 INFO L87 Difference]: Start difference. First operand 287 states and 503 transitions. Second operand 4 states. [2020-11-30 02:38:56,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:38:56,096 INFO L93 Difference]: Finished difference Result 928 states and 1612 transitions. [2020-11-30 02:38:56,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:38:56,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-11-30 02:38:56,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:38:56,102 INFO L225 Difference]: With dead ends: 928 [2020-11-30 02:38:56,102 INFO L226 Difference]: Without dead ends: 642 [2020-11-30 02:38:56,104 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 02:38:56,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-11-30 02:38:56,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2020-11-30 02:38:56,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-30 02:38:56,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 859 transitions. [2020-11-30 02:38:56,155 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 859 transitions. Word has length 97 [2020-11-30 02:38:56,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:38:56,155 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 859 transitions. [2020-11-30 02:38:56,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:38:56,156 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 859 transitions. [2020-11-30 02:38:56,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-30 02:38:56,160 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:38:56,161 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-30 02:38:56,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:38:56,161 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:38:56,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:38:56,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1430995001, now seen corresponding path program 1 times [2020-11-30 02:38:56,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:38:56,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145538439] [2020-11-30 02:38:56,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:38:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:38:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-30 02:38:56,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145538439] [2020-11-30 02:38:56,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:38:56,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:38:56,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687443440] [2020-11-30 02:38:56,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:38:56,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:38:56,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:38:56,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:38:56,280 INFO L87 Difference]: Start difference. First operand 571 states and 859 transitions. Second operand 3 states. [2020-11-30 02:38:56,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:38:56,862 INFO L93 Difference]: Finished difference Result 1354 states and 2033 transitions. [2020-11-30 02:38:56,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:38:56,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2020-11-30 02:38:56,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:38:56,869 INFO L225 Difference]: With dead ends: 1354 [2020-11-30 02:38:56,869 INFO L226 Difference]: Without dead ends: 784 [2020-11-30 02:38:56,873 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 02:38:56,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-11-30 02:38:56,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 642. [2020-11-30 02:38:56,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-11-30 02:38:56,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 937 transitions. [2020-11-30 02:38:56,907 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 937 transitions. Word has length 101 [2020-11-30 02:38:56,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:38:56,908 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 937 transitions. [2020-11-30 02:38:56,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:38:56,909 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 937 transitions. [2020-11-30 02:38:56,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-11-30 02:38:56,918 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:38:56,919 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:38:56,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:38:56,920 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:38:56,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:38:56,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1770500595, now seen corresponding path program 1 times [2020-11-30 02:38:56,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:38:56,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967682853] [2020-11-30 02:38:56,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:38:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:38:57,103 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-30 02:38:57,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967682853] [2020-11-30 02:38:57,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:38:57,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:38:57,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062676429] [2020-11-30 02:38:57,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:38:57,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:38:57,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:38:57,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:38:57,106 INFO L87 Difference]: Start difference. First operand 642 states and 937 transitions. Second operand 4 states. [2020-11-30 02:38:57,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:38:57,968 INFO L93 Difference]: Finished difference Result 1780 states and 2568 transitions. [2020-11-30 02:38:57,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:38:57,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-11-30 02:38:57,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:38:57,982 INFO L225 Difference]: With dead ends: 1780 [2020-11-30 02:38:57,982 INFO L226 Difference]: Without dead ends: 997 [2020-11-30 02:38:57,984 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 02:38:57,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-30 02:38:58,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2020-11-30 02:38:58,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-30 02:38:58,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1174 transitions. [2020-11-30 02:38:58,027 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1174 transitions. Word has length 105 [2020-11-30 02:38:58,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:38:58,029 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1174 transitions. [2020-11-30 02:38:58,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:38:58,029 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1174 transitions. [2020-11-30 02:38:58,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-11-30 02:38:58,032 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:38:58,033 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:38:58,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 02:38:58,034 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:38:58,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:38:58,034 INFO L82 PathProgramCache]: Analyzing trace with hash 310662481, now seen corresponding path program 1 times [2020-11-30 02:38:58,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:38:58,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725974528] [2020-11-30 02:38:58,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:38:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:38:58,139 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-30 02:38:58,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725974528] [2020-11-30 02:38:58,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:38:58,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:38:58,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734634706] [2020-11-30 02:38:58,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:38:58,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:38:58,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:38:58,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:38:58,141 INFO L87 Difference]: Start difference. First operand 926 states and 1174 transitions. Second operand 3 states. [2020-11-30 02:38:58,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:38:58,516 INFO L93 Difference]: Finished difference Result 1851 states and 2347 transitions. [2020-11-30 02:38:58,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:38:58,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2020-11-30 02:38:58,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:38:58,525 INFO L225 Difference]: With dead ends: 1851 [2020-11-30 02:38:58,526 INFO L226 Difference]: Without dead ends: 926 [2020-11-30 02:38:58,527 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 02:38:58,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-30 02:38:58,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2020-11-30 02:38:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-30 02:38:58,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1160 transitions. [2020-11-30 02:38:58,578 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1160 transitions. Word has length 130 [2020-11-30 02:38:58,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:38:58,578 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1160 transitions. [2020-11-30 02:38:58,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:38:58,585 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1160 transitions. [2020-11-30 02:38:58,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-11-30 02:38:58,589 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:38:58,590 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:38:58,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 02:38:58,590 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:38:58,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:38:58,591 INFO L82 PathProgramCache]: Analyzing trace with hash -192425370, now seen corresponding path program 1 times [2020-11-30 02:38:58,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:38:58,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544447090] [2020-11-30 02:38:58,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:38:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:38:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-11-30 02:38:58,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544447090] [2020-11-30 02:38:58,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:38:58,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:38:58,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965790047] [2020-11-30 02:38:58,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:38:58,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:38:58,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:38:58,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:38:58,767 INFO L87 Difference]: Start difference. First operand 926 states and 1160 transitions. Second operand 4 states. [2020-11-30 02:38:59,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:38:59,323 INFO L93 Difference]: Finished difference Result 1922 states and 2401 transitions. [2020-11-30 02:38:59,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:38:59,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-11-30 02:38:59,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:38:59,328 INFO L225 Difference]: With dead ends: 1922 [2020-11-30 02:38:59,329 INFO L226 Difference]: Without dead ends: 997 [2020-11-30 02:38:59,330 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 02:38:59,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-30 02:38:59,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2020-11-30 02:38:59,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-30 02:38:59,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1229 transitions. [2020-11-30 02:38:59,364 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1229 transitions. Word has length 173 [2020-11-30 02:38:59,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:38:59,367 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1229 transitions. [2020-11-30 02:38:59,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:38:59,367 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1229 transitions. [2020-11-30 02:38:59,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-11-30 02:38:59,371 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:38:59,372 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-30 02:38:59,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 02:38:59,372 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:38:59,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:38:59,373 INFO L82 PathProgramCache]: Analyzing trace with hash -862286855, now seen corresponding path program 1 times [2020-11-30 02:38:59,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:38:59,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351207672] [2020-11-30 02:38:59,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:38:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:38:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-11-30 02:38:59,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351207672] [2020-11-30 02:38:59,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:38:59,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:38:59,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398467820] [2020-11-30 02:38:59,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:38:59,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:38:59,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:38:59,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:38:59,542 INFO L87 Difference]: Start difference. First operand 997 states and 1229 transitions. Second operand 3 states. [2020-11-30 02:39:00,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:39:00,005 INFO L93 Difference]: Finished difference Result 2277 states and 2821 transitions. [2020-11-30 02:39:00,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:39:00,006 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2020-11-30 02:39:00,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:39:00,013 INFO L225 Difference]: With dead ends: 2277 [2020-11-30 02:39:00,013 INFO L226 Difference]: Without dead ends: 1281 [2020-11-30 02:39:00,015 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 02:39:00,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-11-30 02:39:00,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1068. [2020-11-30 02:39:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-30 02:39:00,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1321 transitions. [2020-11-30 02:39:00,045 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1321 transitions. Word has length 190 [2020-11-30 02:39:00,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:39:00,046 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1321 transitions. [2020-11-30 02:39:00,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:39:00,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1321 transitions. [2020-11-30 02:39:00,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-11-30 02:39:00,051 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:39:00,052 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:39:00,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 02:39:00,054 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:39:00,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:39:00,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1088019248, now seen corresponding path program 1 times [2020-11-30 02:39:00,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:39:00,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733300779] [2020-11-30 02:39:00,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:39:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:39:00,261 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 275 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-11-30 02:39:00,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733300779] [2020-11-30 02:39:00,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:39:00,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:39:00,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119502648] [2020-11-30 02:39:00,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:39:00,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:39:00,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:39:00,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:39:00,269 INFO L87 Difference]: Start difference. First operand 1068 states and 1321 transitions. Second operand 4 states. [2020-11-30 02:39:00,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:39:00,812 INFO L93 Difference]: Finished difference Result 2309 states and 2826 transitions. [2020-11-30 02:39:00,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:39:00,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 239 [2020-11-30 02:39:00,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:39:00,821 INFO L225 Difference]: With dead ends: 2309 [2020-11-30 02:39:00,821 INFO L226 Difference]: Without dead ends: 1242 [2020-11-30 02:39:00,825 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 02:39:00,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2020-11-30 02:39:00,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1139. [2020-11-30 02:39:00,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-11-30 02:39:00,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1374 transitions. [2020-11-30 02:39:00,860 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1374 transitions. Word has length 239 [2020-11-30 02:39:00,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:39:00,861 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1374 transitions. [2020-11-30 02:39:00,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:39:00,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1374 transitions. [2020-11-30 02:39:00,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-11-30 02:39:00,868 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:39:00,868 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:39:00,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 02:39:00,868 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:39:00,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:39:00,869 INFO L82 PathProgramCache]: Analyzing trace with hash 177007561, now seen corresponding path program 1 times [2020-11-30 02:39:00,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:39:00,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527184948] [2020-11-30 02:39:00,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:39:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:39:01,073 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-11-30 02:39:01,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527184948] [2020-11-30 02:39:01,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:39:01,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:39:01,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431017699] [2020-11-30 02:39:01,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:39:01,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:39:01,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:39:01,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:39:01,076 INFO L87 Difference]: Start difference. First operand 1139 states and 1374 transitions. Second operand 3 states. [2020-11-30 02:39:01,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:39:01,489 INFO L93 Difference]: Finished difference Result 2277 states and 2747 transitions. [2020-11-30 02:39:01,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:39:01,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 252 [2020-11-30 02:39:01,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:39:01,498 INFO L225 Difference]: With dead ends: 2277 [2020-11-30 02:39:01,498 INFO L226 Difference]: Without dead ends: 1139 [2020-11-30 02:39:01,500 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 02:39:01,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-11-30 02:39:01,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2020-11-30 02:39:01,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-11-30 02:39:01,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1325 transitions. [2020-11-30 02:39:01,532 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1325 transitions. Word has length 252 [2020-11-30 02:39:01,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:39:01,533 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1325 transitions. [2020-11-30 02:39:01,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:39:01,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1325 transitions. [2020-11-30 02:39:01,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-11-30 02:39:01,538 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:39:01,539 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 02:39:01,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 02:39:01,539 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:39:01,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:39:01,540 INFO L82 PathProgramCache]: Analyzing trace with hash 784145127, now seen corresponding path program 1 times [2020-11-30 02:39:01,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:39:01,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295195013] [2020-11-30 02:39:01,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:39:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:39:01,849 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 226 proven. 131 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-11-30 02:39:01,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295195013] [2020-11-30 02:39:01,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947636341] [2020-11-30 02:39:01,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_50106f2c-09e7-48b3-ad1d-249ce6dd4944/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 02:39:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:39:02,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:39:02,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:39:02,332 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 291 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-11-30 02:39:02,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:39:02,422 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 291 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-11-30 02:39:02,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:39:02,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2020-11-30 02:39:02,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368915843] [2020-11-30 02:39:02,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:39:02,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:39:02,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:39:02,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:39:02,424 INFO L87 Difference]: Start difference. First operand 1139 states and 1325 transitions. Second operand 3 states. [2020-11-30 02:39:03,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:39:03,074 INFO L93 Difference]: Finished difference Result 2490 states and 2915 transitions. [2020-11-30 02:39:03,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:39:03,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 261 [2020-11-30 02:39:03,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:39:03,084 INFO L225 Difference]: With dead ends: 2490 [2020-11-30 02:39:03,084 INFO L226 Difference]: Without dead ends: 1352 [2020-11-30 02:39:03,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 521 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:39:03,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-11-30 02:39:03,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1210. [2020-11-30 02:39:03,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-11-30 02:39:03,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1409 transitions. [2020-11-30 02:39:03,129 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1409 transitions. Word has length 261 [2020-11-30 02:39:03,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:39:03,130 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1409 transitions. [2020-11-30 02:39:03,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:39:03,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1409 transitions. [2020-11-30 02:39:03,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-11-30 02:39:03,136 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:39:03,136 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 02:39:03,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-30 02:39:03,363 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:39:03,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:39:03,364 INFO L82 PathProgramCache]: Analyzing trace with hash 968671350, now seen corresponding path program 1 times [2020-11-30 02:39:03,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:39:03,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815748281] [2020-11-30 02:39:03,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:39:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:39:03,942 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 02:39:03,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815748281] [2020-11-30 02:39:03,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463589727] [2020-11-30 02:39:03,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_50106f2c-09e7-48b3-ad1d-249ce6dd4944/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 02:39:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:39:04,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:39:04,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:39:04,276 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 02:39:04,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:39:04,344 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 02:39:04,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:39:04,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2020-11-30 02:39:04,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811665500] [2020-11-30 02:39:04,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:39:04,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:39:04,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:39:04,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:39:04,349 INFO L87 Difference]: Start difference. First operand 1210 states and 1409 transitions. Second operand 3 states. [2020-11-30 02:39:04,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:39:04,810 INFO L93 Difference]: Finished difference Result 2488 states and 2865 transitions. [2020-11-30 02:39:04,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:39:04,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 274 [2020-11-30 02:39:04,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:39:04,811 INFO L225 Difference]: With dead ends: 2488 [2020-11-30 02:39:04,811 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:39:04,814 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 02:39:04,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:39:04,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:39:04,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:39:04,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:39:04,817 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 274 [2020-11-30 02:39:04,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:39:04,818 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:39:04,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:39:04,818 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:39:04,818 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:39:05,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-30 02:39:05,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:39:05,614 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-11-30 02:39:06,049 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-11-30 02:39:06,052 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-30 02:39:06,052 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-30 02:39:06,053 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-30 02:39:06,053 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-30 02:39:06,053 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-30 02:39:06,053 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-30 02:39:06,053 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-30 02:39:06,053 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-30 02:39:06,053 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-30 02:39:06,053 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-30 02:39:06,053 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-30 02:39:06,053 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-30 02:39:06,053 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-30 02:39:06,053 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-30 02:39:06,053 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-30 02:39:06,054 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-30 02:39:06,054 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-30 02:39:06,054 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-30 02:39:06,054 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-30 02:39:06,054 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-30 02:39:06,054 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-30 02:39:06,054 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-30 02:39:06,054 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-30 02:39:06,054 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-30 02:39:06,054 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-30 02:39:06,054 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-30 02:39:06,054 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-30 02:39:06,054 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-30 02:39:06,054 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-30 02:39:06,055 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-30 02:39:06,055 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-30 02:39:06,055 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-30 02:39:06,055 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-30 02:39:06,055 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-30 02:39:06,055 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-30 02:39:06,055 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-30 02:39:06,055 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:39:06,055 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-30 02:39:06,055 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-30 02:39:06,055 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-30 02:39:06,056 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse6 (= ~a20~0 1))) (let ((.cse5 (= ~a21~0 1)) (.cse3 (not (= ~a7~0 1))) (.cse2 (= ~a17~0 1)) (.cse10 (<= ~a16~0 4)) (.cse1 (<= ~a21~0 0)) (.cse9 (= ~a16~0 6)) (.cse8 (<= 15 ~a8~0)) (.cse7 (<= 14 ~a8~0)) (.cse0 (<= ~a16~0 5)) (.cse4 (not .cse6))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse4) (and .cse5 .cse6 .cse3 .cse2) (and .cse7 (or (and .cse5 .cse0) (and .cse5 .cse6 .cse8))) (and .cse9 .cse1 .cse6) (and .cse5 .cse10 .cse3) (and .cse10 .cse6 .cse2) (and .cse10 .cse1 .cse6) (and .cse9 .cse4 .cse8) (and .cse7 .cse0 .cse4)))) [2020-11-30 02:39:06,056 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-30 02:39:06,056 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-30 02:39:06,056 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-30 02:39:06,056 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-30 02:39:06,056 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-30 02:39:06,056 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-30 02:39:06,056 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-30 02:39:06,056 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:39:06,057 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-30 02:39:06,057 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-30 02:39:06,057 INFO L274 CegarLoopResult]: For program point L455-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 02:39:06,057 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-30 02:39:06,057 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-30 02:39:06,057 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-30 02:39:06,057 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-30 02:39:06,057 INFO L274 CegarLoopResult]: For program point L458-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 02:39:06,057 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-30 02:39:06,057 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-30 02:39:06,057 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-30 02:39:06,057 INFO L274 CegarLoopResult]: For program point L459(line 459) no Hoare annotation was computed. [2020-11-30 02:39:06,057 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-30 02:39:06,058 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-30 02:39:06,058 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-30 02:39:06,058 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-30 02:39:06,058 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-30 02:39:06,058 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-30 02:39:06,058 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse6 (= ~a20~0 1))) (let ((.cse5 (= ~a21~0 1)) (.cse3 (not (= ~a7~0 1))) (.cse2 (= ~a17~0 1)) (.cse10 (<= ~a16~0 4)) (.cse1 (<= ~a21~0 0)) (.cse9 (= ~a16~0 6)) (.cse8 (<= 15 ~a8~0)) (.cse7 (<= 14 ~a8~0)) (.cse0 (<= ~a16~0 5)) (.cse4 (not .cse6))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse4) (and .cse5 .cse6 .cse3 .cse2) (and .cse7 (or (and .cse5 .cse0) (and .cse5 .cse6 .cse8))) (and .cse9 .cse1 .cse6) (and .cse5 .cse10 .cse3) (and .cse10 .cse6 .cse2) (and .cse10 .cse1 .cse6) (and .cse9 .cse4 .cse8) (and .cse7 .cse0 .cse4)))) [2020-11-30 02:39:06,058 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-30 02:39:06,060 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 02:39:06,060 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-30 02:39:06,060 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-30 02:39:06,060 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-30 02:39:06,060 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-30 02:39:06,061 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-30 02:39:06,061 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-30 02:39:06,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:39:06 BoogieIcfgContainer [2020-11-30 02:39:06,102 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:39:06,112 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:39:06,112 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:39:06,112 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:39:06,113 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:38:53" (3/4) ... [2020-11-30 02:39:06,116 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:39:06,153 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-30 02:39:06,155 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-30 02:39:06,157 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-30 02:39:06,159 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-30 02:39:06,340 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_50106f2c-09e7-48b3-ad1d-249ce6dd4944/bin/utaipan/witness.graphml [2020-11-30 02:39:06,340 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:39:06,341 INFO L168 Benchmark]: Toolchain (without parser) took 16881.00 ms. Allocated memory was 100.7 MB in the beginning and 411.0 MB in the end (delta: 310.4 MB). Free memory was 78.8 MB in the beginning and 275.0 MB in the end (delta: -196.3 MB). Peak memory consumption was 115.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:39:06,342 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory was 59.3 MB in the beginning and 59.2 MB in the end (delta: 52.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:39:06,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 774.97 ms. Allocated memory is still 100.7 MB. Free memory was 78.5 MB in the beginning and 51.7 MB in the end (delta: 26.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:39:06,342 INFO L168 Benchmark]: Boogie Procedure Inliner took 149.21 ms. Allocated memory is still 100.7 MB. Free memory was 51.5 MB in the beginning and 46.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:39:06,343 INFO L168 Benchmark]: Boogie Preprocessor took 98.83 ms. Allocated memory is still 100.7 MB. Free memory was 46.0 MB in the beginning and 41.5 MB in the end (delta: 4.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:39:06,343 INFO L168 Benchmark]: RCFGBuilder took 2590.59 ms. Allocated memory was 100.7 MB in the beginning and 140.5 MB in the end (delta: 39.8 MB). Free memory was 41.3 MB in the beginning and 87.4 MB in the end (delta: -46.1 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:39:06,344 INFO L168 Benchmark]: TraceAbstraction took 13031.10 ms. Allocated memory was 140.5 MB in the beginning and 411.0 MB in the end (delta: 270.5 MB). Free memory was 87.4 MB in the beginning and 289.9 MB in the end (delta: -202.5 MB). Peak memory consumption was 222.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:39:06,344 INFO L168 Benchmark]: Witness Printer took 228.72 ms. Allocated memory is still 411.0 MB. Free memory was 289.9 MB in the beginning and 275.0 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:39:06,346 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory was 59.3 MB in the beginning and 59.2 MB in the end (delta: 52.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 774.97 ms. Allocated memory is still 100.7 MB. Free memory was 78.5 MB in the beginning and 51.7 MB in the end (delta: 26.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 149.21 ms. Allocated memory is still 100.7 MB. Free memory was 51.5 MB in the beginning and 46.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 98.83 ms. Allocated memory is still 100.7 MB. Free memory was 46.0 MB in the beginning and 41.5 MB in the end (delta: 4.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2590.59 ms. Allocated memory was 100.7 MB in the beginning and 140.5 MB in the end (delta: 39.8 MB). Free memory was 41.3 MB in the beginning and 87.4 MB in the end (delta: -46.1 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13031.10 ms. Allocated memory was 140.5 MB in the beginning and 411.0 MB in the end (delta: 270.5 MB). Free memory was 87.4 MB in the beginning and 289.9 MB in the end (delta: -202.5 MB). Peak memory consumption was 222.4 MB. Max. memory is 16.1 GB. * Witness Printer took 228.72 ms. Allocated memory is still 411.0 MB. Free memory was 289.9 MB in the beginning and 275.0 MB in the end (delta: 14.9 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 && a21 <= 0) && a17 == 1) || ((a16 <= 5 && !(a7 == 1)) && !(a20 == 1))) || (((a21 == 1 && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (14 <= a8 && ((a21 == 1 && a16 <= 5) || ((a21 == 1 && a20 == 1) && 15 <= a8)))) || ((a16 == 6 && a21 <= 0) && a20 == 1)) || ((a21 == 1 && a16 <= 4) && !(a7 == 1))) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || ((a16 <= 4 && a21 <= 0) && a20 == 1)) || ((a16 == 6 && !(a20 == 1)) && 15 <= a8)) || ((14 <= a8 && a16 <= 5) && !(a20 == 1)) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((((a16 <= 5 && a21 <= 0) && a17 == 1) || ((a16 <= 5 && !(a7 == 1)) && !(a20 == 1))) || (((a21 == 1 && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (14 <= a8 && ((a21 == 1 && a16 <= 5) || ((a21 == 1 && a20 == 1) && 15 <= a8)))) || ((a16 == 6 && a21 <= 0) && a20 == 1)) || ((a21 == 1 && a16 <= 4) && !(a7 == 1))) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || ((a16 <= 4 && a21 <= 0) && a20 == 1)) || ((a16 == 6 && !(a20 == 1)) && 15 <= a8)) || ((14 <= a8 && a16 <= 5) && !(a20 == 1)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.8s, OverallIterations: 12, TraceHistogramMax: 8, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 594 SDtfs, 983 SDslu, 56 SDs, 0 SdLazy, 2808 SolverSat, 724 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1105 GetRequests, 1079 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1210occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 742 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 245 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2630 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 598 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 2505 NumberOfCodeBlocks, 2505 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 3024 ConstructedInterpolants, 0 QuantifiedInterpolants, 2019406 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1067 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 4053/4315 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...