./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label34.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_d63cd33b-8e70-446a-823a-1be21a417e3b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d63cd33b-8e70-446a-823a-1be21a417e3b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d63cd33b-8e70-446a-823a-1be21a417e3b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d63cd33b-8e70-446a-823a-1be21a417e3b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label34.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d63cd33b-8e70-446a-823a-1be21a417e3b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d63cd33b-8e70-446a-823a-1be21a417e3b/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 7d383be3b45c63d6b7da78462a154ab6c2d74592 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:59:34,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:59:34,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:59:35,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:59:35,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:59:35,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:59:35,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:59:35,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:59:35,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:59:35,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:59:35,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:59:35,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:59:35,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:59:35,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:59:35,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:59:35,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:59:35,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:59:35,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:59:35,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:59:35,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:59:35,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:59:35,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:59:35,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:59:35,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:59:35,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:59:35,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:59:35,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:59:35,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:59:35,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:59:35,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:59:35,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:59:35,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:59:35,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:59:35,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:59:35,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:59:35,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:59:35,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:59:35,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:59:35,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:59:35,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:59:35,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:59:35,081 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d63cd33b-8e70-446a-823a-1be21a417e3b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:59:35,129 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:59:35,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:59:35,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:59:35,132 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:59:35,132 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:59:35,132 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:59:35,133 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:59:35,133 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:59:35,133 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:59:35,133 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:59:35,134 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:59:35,135 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:59:35,135 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:59:35,135 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:59:35,135 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:59:35,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:59:35,137 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:59:35,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:59:35,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:59:35,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:59:35,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:59:35,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:59:35,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:59:35,138 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:59:35,138 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:59:35,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:59:35,139 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:59:35,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:59:35,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:59:35,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:59:35,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:59:35,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:59:35,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:59:35,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:59:35,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:59:35,141 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:59:35,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:59:35,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:59:35,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:59:35,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:59:35,143 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_d63cd33b-8e70-446a-823a-1be21a417e3b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d63cd33b-8e70-446a-823a-1be21a417e3b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d383be3b45c63d6b7da78462a154ab6c2d74592 [2020-11-22 12:59:35,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:59:35,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:59:35,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:59:35,462 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:59:35,464 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:59:35,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d63cd33b-8e70-446a-823a-1be21a417e3b/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label34.c [2020-11-22 12:59:35,543 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d63cd33b-8e70-446a-823a-1be21a417e3b/bin/utaipan/data/4b4125de5/414c61ab8f8248f5bdebb9d5e871be24/FLAGf14a061bc [2020-11-22 12:59:36,101 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:59:36,101 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d63cd33b-8e70-446a-823a-1be21a417e3b/sv-benchmarks/c/eca-rers2012/Problem01_label34.c [2020-11-22 12:59:36,120 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d63cd33b-8e70-446a-823a-1be21a417e3b/bin/utaipan/data/4b4125de5/414c61ab8f8248f5bdebb9d5e871be24/FLAGf14a061bc [2020-11-22 12:59:36,374 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d63cd33b-8e70-446a-823a-1be21a417e3b/bin/utaipan/data/4b4125de5/414c61ab8f8248f5bdebb9d5e871be24 [2020-11-22 12:59:36,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:59:36,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:59:36,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:59:36,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:59:36,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:59:36,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:59:36" (1/1) ... [2020-11-22 12:59:36,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41bbb985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:36, skipping insertion in model container [2020-11-22 12:59:36,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:59:36" (1/1) ... [2020-11-22 12:59:36,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:59:36,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:59:36,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:59:36,935 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:59:37,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:59:37,103 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:59:37,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:37 WrapperNode [2020-11-22 12:59:37,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:59:37,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:59:37,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:59:37,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:59:37,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:37" (1/1) ... [2020-11-22 12:59:37,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:37" (1/1) ... [2020-11-22 12:59:37,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:59:37,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:59:37,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:59:37,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:59:37,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:37" (1/1) ... [2020-11-22 12:59:37,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:37" (1/1) ... [2020-11-22 12:59:37,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:37" (1/1) ... [2020-11-22 12:59:37,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:37" (1/1) ... [2020-11-22 12:59:37,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:37" (1/1) ... [2020-11-22 12:59:37,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:37" (1/1) ... [2020-11-22 12:59:37,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:37" (1/1) ... [2020-11-22 12:59:37,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:59:37,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:59:37,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:59:37,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:59:37,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d63cd33b-8e70-446a-823a-1be21a417e3b/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 [2020-11-22 12:59:37,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:59:37,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:59:37,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:59:37,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:59:39,867 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:59:39,867 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 12:59:39,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:39 BoogieIcfgContainer [2020-11-22 12:59:39,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:59:39,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:59:39,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:59:39,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:59:39,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:59:36" (1/3) ... [2020-11-22 12:59:39,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23696384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:59:39, skipping insertion in model container [2020-11-22 12:59:39,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:37" (2/3) ... [2020-11-22 12:59:39,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23696384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:59:39, skipping insertion in model container [2020-11-22 12:59:39,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:39" (3/3) ... [2020-11-22 12:59:39,878 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label34.c [2020-11-22 12:59:39,892 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:59:39,897 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:59:39,909 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:59:39,946 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:59:39,946 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:59:39,946 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:59:39,947 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:59:39,947 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:59:39,947 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:59:39,947 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:59:39,947 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:59:39,966 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-22 12:59:39,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-22 12:59:39,976 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:39,977 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] [2020-11-22 12:59:39,977 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:39,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:39,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1520708717, now seen corresponding path program 1 times [2020-11-22 12:59:39,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:39,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181015453] [2020-11-22 12:59:39,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:40,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:40,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181015453] [2020-11-22 12:59:40,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:40,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:40,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341894650] [2020-11-22 12:59:40,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:40,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:40,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:40,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:40,553 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-11-22 12:59:41,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:41,488 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2020-11-22 12:59:41,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:59:41,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-11-22 12:59:41,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:41,513 INFO L225 Difference]: With dead ends: 297 [2020-11-22 12:59:41,513 INFO L226 Difference]: Without dead ends: 216 [2020-11-22 12:59:41,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:59:41,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-22 12:59:41,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-11-22 12:59:41,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-22 12:59:41,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2020-11-22 12:59:41,602 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2020-11-22 12:59:41,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:41,604 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2020-11-22 12:59:41,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:41,605 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2020-11-22 12:59:41,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-22 12:59:41,617 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:41,617 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:41,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:59:41,618 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:41,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:41,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1832090052, now seen corresponding path program 1 times [2020-11-22 12:59:41,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:41,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885403568] [2020-11-22 12:59:41,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:41,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:41,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885403568] [2020-11-22 12:59:41,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:41,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:41,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169193112] [2020-11-22 12:59:41,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:41,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:41,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:41,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:41,851 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand 4 states. [2020-11-22 12:59:42,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:42,467 INFO L93 Difference]: Finished difference Result 500 states and 848 transitions. [2020-11-22 12:59:42,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:59:42,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-11-22 12:59:42,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:42,472 INFO L225 Difference]: With dead ends: 500 [2020-11-22 12:59:42,472 INFO L226 Difference]: Without dead ends: 287 [2020-11-22 12:59:42,474 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 [2020-11-22 12:59:42,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-22 12:59:42,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2020-11-22 12:59:42,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-22 12:59:42,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2020-11-22 12:59:42,490 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2020-11-22 12:59:42,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:42,490 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2020-11-22 12:59:42,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:42,491 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2020-11-22 12:59:42,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-22 12:59:42,493 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:42,493 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:42,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:59:42,494 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:42,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:42,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1009064008, now seen corresponding path program 1 times [2020-11-22 12:59:42,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:42,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457320933] [2020-11-22 12:59:42,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:42,576 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:42,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457320933] [2020-11-22 12:59:42,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:42,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:42,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661729027] [2020-11-22 12:59:42,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:42,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:42,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:42,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:42,579 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand 4 states. [2020-11-22 12:59:43,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:43,043 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2020-11-22 12:59:43,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:59:43,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-11-22 12:59:43,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:43,047 INFO L225 Difference]: With dead ends: 573 [2020-11-22 12:59:43,047 INFO L226 Difference]: Without dead ends: 358 [2020-11-22 12:59:43,050 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 [2020-11-22 12:59:43,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-11-22 12:59:43,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-11-22 12:59:43,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-11-22 12:59:43,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 483 transitions. [2020-11-22 12:59:43,069 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 483 transitions. Word has length 86 [2020-11-22 12:59:43,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:43,070 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 483 transitions. [2020-11-22 12:59:43,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:43,070 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 483 transitions. [2020-11-22 12:59:43,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-22 12:59:43,072 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:43,072 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:43,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:59:43,072 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:43,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:43,073 INFO L82 PathProgramCache]: Analyzing trace with hash 554917822, now seen corresponding path program 1 times [2020-11-22 12:59:43,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:43,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65599652] [2020-11-22 12:59:43,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:43,170 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-22 12:59:43,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65599652] [2020-11-22 12:59:43,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:43,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:43,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162656486] [2020-11-22 12:59:43,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:43,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:43,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:43,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:43,173 INFO L87 Difference]: Start difference. First operand 358 states and 483 transitions. Second operand 3 states. [2020-11-22 12:59:43,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:43,520 INFO L93 Difference]: Finished difference Result 999 states and 1339 transitions. [2020-11-22 12:59:43,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:43,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-22 12:59:43,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:43,525 INFO L225 Difference]: With dead ends: 999 [2020-11-22 12:59:43,526 INFO L226 Difference]: Without dead ends: 642 [2020-11-22 12:59:43,527 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 [2020-11-22 12:59:43,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-11-22 12:59:43,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2020-11-22 12:59:43,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-22 12:59:43,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 778 transitions. [2020-11-22 12:59:43,577 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 778 transitions. Word has length 111 [2020-11-22 12:59:43,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:43,577 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 778 transitions. [2020-11-22 12:59:43,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:43,578 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 778 transitions. [2020-11-22 12:59:43,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-11-22 12:59:43,582 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:43,582 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:43,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:59:43,583 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:43,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:43,583 INFO L82 PathProgramCache]: Analyzing trace with hash 73604026, now seen corresponding path program 1 times [2020-11-22 12:59:43,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:43,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753578125] [2020-11-22 12:59:43,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-22 12:59:43,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753578125] [2020-11-22 12:59:43,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:43,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:59:43,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79490628] [2020-11-22 12:59:43,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:43,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:43,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:43,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:43,738 INFO L87 Difference]: Start difference. First operand 571 states and 778 transitions. Second operand 4 states. [2020-11-22 12:59:44,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:44,208 INFO L93 Difference]: Finished difference Result 1283 states and 1752 transitions. [2020-11-22 12:59:44,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:59:44,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-11-22 12:59:44,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:44,213 INFO L225 Difference]: With dead ends: 1283 [2020-11-22 12:59:44,213 INFO L226 Difference]: Without dead ends: 713 [2020-11-22 12:59:44,215 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 [2020-11-22 12:59:44,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-11-22 12:59:44,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 642. [2020-11-22 12:59:44,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-11-22 12:59:44,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 857 transitions. [2020-11-22 12:59:44,242 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 857 transitions. Word has length 120 [2020-11-22 12:59:44,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:44,242 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 857 transitions. [2020-11-22 12:59:44,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:44,242 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 857 transitions. [2020-11-22 12:59:44,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-11-22 12:59:44,245 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:44,245 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1] [2020-11-22 12:59:44,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:59:44,246 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:44,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:44,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1828602839, now seen corresponding path program 1 times [2020-11-22 12:59:44,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:44,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195820343] [2020-11-22 12:59:44,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:44,416 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-22 12:59:44,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195820343] [2020-11-22 12:59:44,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:44,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:44,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739366029] [2020-11-22 12:59:44,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:44,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:44,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:44,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:44,418 INFO L87 Difference]: Start difference. First operand 642 states and 857 transitions. Second operand 4 states. [2020-11-22 12:59:44,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:44,957 INFO L93 Difference]: Finished difference Result 1496 states and 1975 transitions. [2020-11-22 12:59:44,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:59:44,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-11-22 12:59:44,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:44,963 INFO L225 Difference]: With dead ends: 1496 [2020-11-22 12:59:44,963 INFO L226 Difference]: Without dead ends: 855 [2020-11-22 12:59:44,968 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 [2020-11-22 12:59:44,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-11-22 12:59:44,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2020-11-22 12:59:44,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-22 12:59:44,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1021 transitions. [2020-11-22 12:59:44,992 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1021 transitions. Word has length 134 [2020-11-22 12:59:44,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:44,992 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1021 transitions. [2020-11-22 12:59:44,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:44,998 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1021 transitions. [2020-11-22 12:59:45,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-11-22 12:59:45,001 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:45,001 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:45,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:59:45,002 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:45,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:45,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1124335800, now seen corresponding path program 1 times [2020-11-22 12:59:45,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:45,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154266957] [2020-11-22 12:59:45,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:45,189 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-11-22 12:59:45,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154266957] [2020-11-22 12:59:45,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:45,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:45,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013162920] [2020-11-22 12:59:45,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:45,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:45,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:45,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:45,191 INFO L87 Difference]: Start difference. First operand 784 states and 1021 transitions. Second operand 3 states. [2020-11-22 12:59:45,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:45,535 INFO L93 Difference]: Finished difference Result 1709 states and 2194 transitions. [2020-11-22 12:59:45,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:45,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2020-11-22 12:59:45,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:45,542 INFO L225 Difference]: With dead ends: 1709 [2020-11-22 12:59:45,542 INFO L226 Difference]: Without dead ends: 926 [2020-11-22 12:59:45,544 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 [2020-11-22 12:59:45,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-22 12:59:45,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2020-11-22 12:59:45,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-22 12:59:45,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1015 transitions. [2020-11-22 12:59:45,567 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1015 transitions. Word has length 167 [2020-11-22 12:59:45,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:45,569 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1015 transitions. [2020-11-22 12:59:45,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:45,570 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1015 transitions. [2020-11-22 12:59:45,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-11-22 12:59:45,574 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:45,574 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:45,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 12:59:45,574 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:45,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:45,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1710307552, now seen corresponding path program 1 times [2020-11-22 12:59:45,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:45,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716315707] [2020-11-22 12:59:45,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:45,733 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-11-22 12:59:45,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716315707] [2020-11-22 12:59:45,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:45,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:45,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667770038] [2020-11-22 12:59:45,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:45,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:45,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:45,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:45,736 INFO L87 Difference]: Start difference. First operand 784 states and 1015 transitions. Second operand 3 states. [2020-11-22 12:59:46,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:46,087 INFO L93 Difference]: Finished difference Result 1709 states and 2182 transitions. [2020-11-22 12:59:46,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:46,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2020-11-22 12:59:46,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:46,094 INFO L225 Difference]: With dead ends: 1709 [2020-11-22 12:59:46,094 INFO L226 Difference]: Without dead ends: 926 [2020-11-22 12:59:46,096 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 [2020-11-22 12:59:46,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-22 12:59:46,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2020-11-22 12:59:46,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-11-22 12:59:46,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1055 transitions. [2020-11-22 12:59:46,138 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1055 transitions. Word has length 210 [2020-11-22 12:59:46,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:46,139 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1055 transitions. [2020-11-22 12:59:46,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:46,140 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1055 transitions. [2020-11-22 12:59:46,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-11-22 12:59:46,144 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:46,144 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:46,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 12:59:46,146 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:46,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:46,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1559675065, now seen corresponding path program 1 times [2020-11-22 12:59:46,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:46,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573410292] [2020-11-22 12:59:46,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:46,420 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 235 proven. 35 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-11-22 12:59:46,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573410292] [2020-11-22 12:59:46,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322524101] [2020-11-22 12:59:46,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d63cd33b-8e70-446a-823a-1be21a417e3b/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 [2020-11-22 12:59:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:46,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:59:46,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:59:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-11-22 12:59:46,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:59:46,956 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-11-22 12:59:46,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:59:46,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-11-22 12:59:46,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676546680] [2020-11-22 12:59:46,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:46,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:46,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:46,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:59:46,960 INFO L87 Difference]: Start difference. First operand 855 states and 1055 transitions. Second operand 3 states. [2020-11-22 12:59:47,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:47,310 INFO L93 Difference]: Finished difference Result 1993 states and 2470 transitions. [2020-11-22 12:59:47,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:47,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2020-11-22 12:59:47,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:47,317 INFO L225 Difference]: With dead ends: 1993 [2020-11-22 12:59:47,319 INFO L226 Difference]: Without dead ends: 1139 [2020-11-22 12:59:47,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 443 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:59:47,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-11-22 12:59:47,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 997. [2020-11-22 12:59:47,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-22 12:59:47,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1253 transitions. [2020-11-22 12:59:47,356 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1253 transitions. Word has length 223 [2020-11-22 12:59:47,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:47,356 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1253 transitions. [2020-11-22 12:59:47,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:47,356 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1253 transitions. [2020-11-22 12:59:47,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-11-22 12:59:47,361 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:47,361 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:47,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-22 12:59:47,588 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:47,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:47,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1492296855, now seen corresponding path program 1 times [2020-11-22 12:59:47,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:47,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367146394] [2020-11-22 12:59:47,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:47,820 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 260 proven. 55 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-11-22 12:59:47,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367146394] [2020-11-22 12:59:47,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433496540] [2020-11-22 12:59:47,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d63cd33b-8e70-446a-823a-1be21a417e3b/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 [2020-11-22 12:59:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:47,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:59:47,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:59:48,045 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-11-22 12:59:48,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:59:48,132 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-11-22 12:59:48,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:59:48,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-22 12:59:48,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005748345] [2020-11-22 12:59:48,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:48,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:48,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:48,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:59:48,137 INFO L87 Difference]: Start difference. First operand 997 states and 1253 transitions. Second operand 4 states. [2020-11-22 12:59:48,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:48,670 INFO L93 Difference]: Finished difference Result 2703 states and 3425 transitions. [2020-11-22 12:59:48,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:59:48,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 232 [2020-11-22 12:59:48,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:48,681 INFO L225 Difference]: With dead ends: 2703 [2020-11-22 12:59:48,681 INFO L226 Difference]: Without dead ends: 1707 [2020-11-22 12:59:48,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:59:48,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2020-11-22 12:59:48,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1068. [2020-11-22 12:59:48,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-22 12:59:48,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1333 transitions. [2020-11-22 12:59:48,747 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1333 transitions. Word has length 232 [2020-11-22 12:59:48,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:48,747 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1333 transitions. [2020-11-22 12:59:48,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:48,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1333 transitions. [2020-11-22 12:59:48,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-11-22 12:59:48,753 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:48,753 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:48,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-22 12:59:48,954 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:48,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:48,954 INFO L82 PathProgramCache]: Analyzing trace with hash -588458251, now seen corresponding path program 1 times [2020-11-22 12:59:48,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:48,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825904904] [2020-11-22 12:59:48,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:49,352 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 256 proven. 142 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-22 12:59:49,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825904904] [2020-11-22 12:59:49,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377553374] [2020-11-22 12:59:49,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d63cd33b-8e70-446a-823a-1be21a417e3b/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:59:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:49,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:59:49,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:59:49,571 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-11-22 12:59:49,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:59:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-11-22 12:59:49,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:59:49,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2020-11-22 12:59:49,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518317862] [2020-11-22 12:59:49,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:49,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:49,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:49,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:59:49,637 INFO L87 Difference]: Start difference. First operand 1068 states and 1333 transitions. Second operand 3 states. [2020-11-22 12:59:49,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:49,976 INFO L93 Difference]: Finished difference Result 2133 states and 2664 transitions. [2020-11-22 12:59:49,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:49,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-11-22 12:59:49,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:49,978 INFO L225 Difference]: With dead ends: 2133 [2020-11-22 12:59:49,978 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:59:49,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 481 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:59:49,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:59:49,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:59:49,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:59:49,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:59:49,981 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2020-11-22 12:59:49,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:49,981 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:59:49,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:49,981 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:59:49,981 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:59:50,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-22 12:59:50,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:59:50,426 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2020-11-22 12:59:50,655 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2020-11-22 12:59:50,658 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-22 12:59:50,658 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-22 12:59:50,658 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-22 12:59:50,658 INFO L274 CegarLoopResult]: For program point L500-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 12:59:50,658 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-22 12:59:50,658 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-22 12:59:50,658 INFO L274 CegarLoopResult]: For program point L501(line 501) no Hoare annotation was computed. [2020-11-22 12:59:50,658 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-22 12:59:50,658 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-22 12:59:50,659 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-22 12:59:50,659 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-22 12:59:50,659 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-22 12:59:50,659 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-22 12:59:50,659 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-22 12:59:50,659 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-22 12:59:50,659 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-22 12:59:50,659 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-22 12:59:50,659 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-22 12:59:50,659 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-22 12:59:50,659 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-22 12:59:50,660 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-22 12:59:50,660 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-22 12:59:50,663 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-22 12:59:50,663 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-22 12:59:50,663 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-22 12:59:50,663 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-22 12:59:50,663 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-22 12:59:50,664 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-22 12:59:50,664 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-22 12:59:50,664 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-22 12:59:50,664 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-22 12:59:50,664 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-22 12:59:50,664 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-22 12:59:50,664 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-22 12:59:50,664 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-22 12:59:50,664 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-22 12:59:50,664 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-22 12:59:50,665 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-22 12:59:50,665 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:59:50,665 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-22 12:59:50,665 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-22 12:59:50,665 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-22 12:59:50,665 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a20~0 1)) (.cse3 (= ~a16~0 6)) (.cse1 (not (= ~a7~0 1))) (.cse2 (<= ~a16~0 5)) (.cse4 (<= ~a21~0 0))) (or (and .cse0 .cse1) (and (< 13 ~a8~0) .cse2) (and .cse3 .cse4) (and (= ~a21~0 1) (= ~a12~0 8) (= ~a8~0 13) .cse0 (= ~a16~0 4) (= ~a17~0 1)) (and .cse3 .cse1 (<= 15 ~a8~0)) (and .cse2 .cse1) (and .cse2 .cse4))) [2020-11-22 12:59:50,666 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-22 12:59:50,666 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-22 12:59:50,666 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-22 12:59:50,666 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-22 12:59:50,666 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-22 12:59:50,666 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-22 12:59:50,666 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-22 12:59:50,666 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:59:50,666 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-22 12:59:50,666 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-22 12:59:50,667 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-22 12:59:50,667 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-22 12:59:50,667 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-22 12:59:50,667 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-22 12:59:50,667 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-22 12:59:50,667 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-22 12:59:50,667 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-22 12:59:50,667 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-22 12:59:50,667 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-22 12:59:50,667 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-22 12:59:50,667 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-22 12:59:50,668 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-22 12:59:50,668 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-22 12:59:50,668 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a20~0 1)) (.cse3 (= ~a16~0 6)) (.cse1 (not (= ~a7~0 1))) (.cse2 (<= ~a16~0 5)) (.cse4 (<= ~a21~0 0))) (or (and .cse0 .cse1) (and (< 13 ~a8~0) .cse2) (and .cse3 .cse4) (and (= ~a21~0 1) (= ~a12~0 8) (= ~a8~0 13) .cse0 (= ~a16~0 4) (= ~a17~0 1)) (and .cse3 .cse1 (<= 15 ~a8~0)) (and .cse2 .cse1) (and .cse2 .cse4))) [2020-11-22 12:59:50,668 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-22 12:59:50,668 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 12:59:50,668 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-22 12:59:50,668 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-22 12:59:50,669 INFO L274 CegarLoopResult]: For program point L497-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 12:59:50,669 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-22 12:59:50,669 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-22 12:59:50,669 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-22 12:59:50,669 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-22 12:59:50,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:59:50 BoogieIcfgContainer [2020-11-22 12:59:50,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:59:50,705 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:59:50,705 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:59:50,705 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:59:50,705 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:39" (3/4) ... [2020-11-22 12:59:50,708 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:59:50,744 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2020-11-22 12:59:50,746 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-22 12:59:50,747 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 12:59:50,755 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-22 12:59:50,978 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d63cd33b-8e70-446a-823a-1be21a417e3b/bin/utaipan/witness.graphml [2020-11-22 12:59:50,978 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:59:50,979 INFO L168 Benchmark]: Toolchain (without parser) took 14601.75 ms. Allocated memory was 86.0 MB in the beginning and 367.0 MB in the end (delta: 281.0 MB). Free memory was 51.4 MB in the beginning and 248.8 MB in the end (delta: -197.4 MB). Peak memory consumption was 83.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:50,980 INFO L168 Benchmark]: CDTParser took 0.89 ms. Allocated memory is still 86.0 MB. Free memory was 56.3 MB in the beginning and 56.3 MB in the end (delta: 24.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:59:50,980 INFO L168 Benchmark]: CACSL2BoogieTranslator took 726.02 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 51.1 MB in the beginning and 75.7 MB in the end (delta: -24.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:50,981 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.13 ms. Allocated memory is still 115.3 MB. Free memory was 75.7 MB in the beginning and 70.0 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:50,981 INFO L168 Benchmark]: Boogie Preprocessor took 60.29 ms. Allocated memory is still 115.3 MB. Free memory was 70.0 MB in the beginning and 65.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:50,982 INFO L168 Benchmark]: RCFGBuilder took 2600.51 ms. Allocated memory was 115.3 MB in the beginning and 142.6 MB in the end (delta: 27.3 MB). Free memory was 65.8 MB in the beginning and 65.3 MB in the end (delta: 485.6 kB). Peak memory consumption was 43.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:50,982 INFO L168 Benchmark]: TraceAbstraction took 10832.81 ms. Allocated memory was 142.6 MB in the beginning and 367.0 MB in the end (delta: 224.4 MB). Free memory was 65.3 MB in the beginning and 264.5 MB in the end (delta: -199.2 MB). Peak memory consumption was 173.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:50,982 INFO L168 Benchmark]: Witness Printer took 273.66 ms. Allocated memory is still 367.0 MB. Free memory was 264.5 MB in the beginning and 248.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:50,985 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.89 ms. Allocated memory is still 86.0 MB. Free memory was 56.3 MB in the beginning and 56.3 MB in the end (delta: 24.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 726.02 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 51.1 MB in the beginning and 75.7 MB in the end (delta: -24.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 102.13 ms. Allocated memory is still 115.3 MB. Free memory was 75.7 MB in the beginning and 70.0 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.29 ms. Allocated memory is still 115.3 MB. Free memory was 70.0 MB in the beginning and 65.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2600.51 ms. Allocated memory was 115.3 MB in the beginning and 142.6 MB in the end (delta: 27.3 MB). Free memory was 65.8 MB in the beginning and 65.3 MB in the end (delta: 485.6 kB). Peak memory consumption was 43.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10832.81 ms. Allocated memory was 142.6 MB in the beginning and 367.0 MB in the end (delta: 224.4 MB). Free memory was 65.3 MB in the beginning and 264.5 MB in the end (delta: -199.2 MB). Peak memory consumption was 173.1 MB. Max. memory is 16.1 GB. * Witness Printer took 273.66 ms. Allocated memory is still 367.0 MB. Free memory was 264.5 MB in the beginning and 248.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((a20 == 1 && !(a7 == 1)) || (13 < a8 && a16 <= 5)) || (a16 == 6 && a21 <= 0)) || (((((a21 == 1 && a12 == 8) && a8 == 13) && a20 == 1) && a16 == 4) && a17 == 1)) || ((a16 == 6 && !(a7 == 1)) && 15 <= a8)) || (a16 <= 5 && !(a7 == 1))) || (a16 <= 5 && a21 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((a20 == 1 && !(a7 == 1)) || (13 < a8 && a16 <= 5)) || (a16 == 6 && a21 <= 0)) || (((((a21 == 1 && a12 == 8) && a8 == 13) && a20 == 1) && a16 == 4) && a17 == 1)) || ((a16 == 6 && !(a7 == 1)) && 15 <= a8)) || (a16 <= 5 && !(a7 == 1))) || (a16 <= 5 && a21 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.2s, OverallIterations: 11, TraceHistogramMax: 8, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 483 SDtfs, 1090 SDslu, 70 SDs, 0 SdLazy, 2936 SolverSat, 721 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1429 GetRequests, 1399 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 1278 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 38 NumberOfFragments, 137 HoareAnnotationTreeSize, 3 FomulaSimplifications, 11334 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 808 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 2369 NumberOfCodeBlocks, 2369 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 3048 ConstructedInterpolants, 0 QuantifiedInterpolants, 1747108 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1610 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 17 InterpolantComputations, 14 PerfectInterpolantSequences, 4132/4364 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...