./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label06.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_d4721094-3b5a-4d46-828b-83860446555d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d4721094-3b5a-4d46-828b-83860446555d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d4721094-3b5a-4d46-828b-83860446555d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d4721094-3b5a-4d46-828b-83860446555d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label06.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d4721094-3b5a-4d46-828b-83860446555d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d4721094-3b5a-4d46-828b-83860446555d/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 296b9a8bd43d1f84683291887dc52c74499fe706 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:55:49,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:55:49,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:55:49,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:55:49,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:55:49,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:55:49,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:55:49,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:55:49,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:55:49,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:55:49,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:55:49,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:55:49,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:55:49,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:55:49,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:55:49,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:55:49,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:55:49,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:55:49,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:55:49,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:55:49,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:55:49,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:55:49,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:55:49,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:55:49,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:55:49,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:55:49,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:55:49,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:55:49,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:55:49,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:55:49,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:55:49,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:55:49,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:55:49,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:55:49,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:55:49,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:55:49,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:55:49,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:55:49,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:55:49,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:55:49,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:55:49,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d4721094-3b5a-4d46-828b-83860446555d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:55:49,927 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:55:49,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:55:49,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:55:49,929 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:55:49,929 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:55:49,929 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:55:49,929 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:55:49,930 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:55:49,930 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:55:49,930 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:55:49,931 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:55:49,931 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:55:49,931 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:55:49,932 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:55:49,932 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:55:49,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:55:49,933 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:55:49,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:55:49,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:55:49,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:55:49,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:55:49,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:55:49,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:55:49,935 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:55:49,935 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:55:49,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:55:49,936 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:55:49,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:55:49,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:55:49,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:55:49,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:55:49,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:55:49,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:55:49,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:55:49,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:55:49,938 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:55:49,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:55:49,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:55:49,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:55:49,939 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:55:49,939 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_d4721094-3b5a-4d46-828b-83860446555d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d4721094-3b5a-4d46-828b-83860446555d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 296b9a8bd43d1f84683291887dc52c74499fe706 [2020-11-30 02:55:50,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:55:50,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:55:50,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:55:50,314 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:55:50,316 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:55:50,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d4721094-3b5a-4d46-828b-83860446555d/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label06.c [2020-11-30 02:55:50,401 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d4721094-3b5a-4d46-828b-83860446555d/bin/utaipan/data/a7ea61c0a/b8f7696e57744f8d8a9734f71c3a4058/FLAGe17968c6b [2020-11-30 02:55:51,168 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:55:51,169 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d4721094-3b5a-4d46-828b-83860446555d/sv-benchmarks/c/eca-rers2012/Problem02_label06.c [2020-11-30 02:55:51,187 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d4721094-3b5a-4d46-828b-83860446555d/bin/utaipan/data/a7ea61c0a/b8f7696e57744f8d8a9734f71c3a4058/FLAGe17968c6b [2020-11-30 02:55:51,367 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d4721094-3b5a-4d46-828b-83860446555d/bin/utaipan/data/a7ea61c0a/b8f7696e57744f8d8a9734f71c3a4058 [2020-11-30 02:55:51,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:55:51,372 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:55:51,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:55:51,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:55:51,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:55:51,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:55:51" (1/1) ... [2020-11-30 02:55:51,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b9b8c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:55:51, skipping insertion in model container [2020-11-30 02:55:51,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:55:51" (1/1) ... [2020-11-30 02:55:51,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:55:51,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:55:51,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:55:51,994 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:55:52,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:55:52,245 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:55:52,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:55:52 WrapperNode [2020-11-30 02:55:52,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:55:52,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:55:52,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:55:52,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:55:52,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:55:52" (1/1) ... [2020-11-30 02:55:52,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:55:52" (1/1) ... [2020-11-30 02:55:52,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:55:52,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:55:52,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:55:52,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:55:52,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:55:52" (1/1) ... [2020-11-30 02:55:52,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:55:52" (1/1) ... [2020-11-30 02:55:52,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:55:52" (1/1) ... [2020-11-30 02:55:52,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:55:52" (1/1) ... [2020-11-30 02:55:52,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:55:52" (1/1) ... [2020-11-30 02:55:52,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:55:52" (1/1) ... [2020-11-30 02:55:52,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:55:52" (1/1) ... [2020-11-30 02:55:52,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:55:52,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:55:52,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:55:52,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:55:52,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:55:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4721094-3b5a-4d46-828b-83860446555d/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:55:52,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:55:52,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:55:52,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:55:52,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:55:56,032 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:55:56,032 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 02:55:56,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:55:56 BoogieIcfgContainer [2020-11-30 02:55:56,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:55:56,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:55:56,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:55:56,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:55:56,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:55:51" (1/3) ... [2020-11-30 02:55:56,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd62360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:55:56, skipping insertion in model container [2020-11-30 02:55:56,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:55:52" (2/3) ... [2020-11-30 02:55:56,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd62360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:55:56, skipping insertion in model container [2020-11-30 02:55:56,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:55:56" (3/3) ... [2020-11-30 02:55:56,051 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label06.c [2020-11-30 02:55:56,065 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:55:56,071 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:55:56,088 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:55:56,118 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:55:56,118 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:55:56,118 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:55:56,118 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:55:56,119 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:55:56,119 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:55:56,119 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:55:56,119 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:55:56,138 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-30 02:55:56,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-30 02:55:56,148 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:55:56,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:55:56,149 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:55:56,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:55:56,156 INFO L82 PathProgramCache]: Analyzing trace with hash -216536048, now seen corresponding path program 1 times [2020-11-30 02:55:56,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:55:56,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134422650] [2020-11-30 02:55:56,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:55:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:55:56,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:55:56,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134422650] [2020-11-30 02:55:56,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:55:56,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:55:56,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408742279] [2020-11-30 02:55:56,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:55:56,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:55:56,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:55:56,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:55:56,699 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-30 02:55:57,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:55:57,508 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-30 02:55:57,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:55:57,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-30 02:55:57,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:55:57,530 INFO L225 Difference]: With dead ends: 251 [2020-11-30 02:55:57,531 INFO L226 Difference]: Without dead ends: 163 [2020-11-30 02:55:57,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:55:57,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-30 02:55:57,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-30 02:55:57,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-30 02:55:57,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2020-11-30 02:55:57,638 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2020-11-30 02:55:57,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:55:57,641 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2020-11-30 02:55:57,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:55:57,641 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2020-11-30 02:55:57,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-30 02:55:57,651 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:55:57,654 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:55:57,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:55:57,655 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:55:57,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:55:57,656 INFO L82 PathProgramCache]: Analyzing trace with hash -215847974, now seen corresponding path program 1 times [2020-11-30 02:55:57,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:55:57,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019754718] [2020-11-30 02:55:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:55:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:55:57,838 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:55:57,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019754718] [2020-11-30 02:55:57,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:55:57,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:55:57,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490428276] [2020-11-30 02:55:57,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:55:57,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:55:57,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:55:57,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:55:57,846 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand 3 states. [2020-11-30 02:55:58,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:55:58,213 INFO L93 Difference]: Finished difference Result 325 states and 625 transitions. [2020-11-30 02:55:58,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:55:58,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-30 02:55:58,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:55:58,216 INFO L225 Difference]: With dead ends: 325 [2020-11-30 02:55:58,217 INFO L226 Difference]: Without dead ends: 163 [2020-11-30 02:55:58,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:55:58,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-30 02:55:58,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-30 02:55:58,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-30 02:55:58,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 283 transitions. [2020-11-30 02:55:58,234 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 283 transitions. Word has length 91 [2020-11-30 02:55:58,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:55:58,234 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 283 transitions. [2020-11-30 02:55:58,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:55:58,234 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 283 transitions. [2020-11-30 02:55:58,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-30 02:55:58,237 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:55:58,237 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:55:58,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:55:58,238 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:55:58,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:55:58,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1467828461, now seen corresponding path program 1 times [2020-11-30 02:55:58,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:55:58,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146491825] [2020-11-30 02:55:58,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:55:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:55:58,347 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:55:58,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146491825] [2020-11-30 02:55:58,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:55:58,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:55:58,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086050971] [2020-11-30 02:55:58,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:55:58,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:55:58,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:55:58,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:55:58,361 INFO L87 Difference]: Start difference. First operand 163 states and 283 transitions. Second operand 3 states. [2020-11-30 02:55:59,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:55:59,037 INFO L93 Difference]: Finished difference Result 485 states and 846 transitions. [2020-11-30 02:55:59,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:55:59,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-11-30 02:55:59,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:55:59,041 INFO L225 Difference]: With dead ends: 485 [2020-11-30 02:55:59,041 INFO L226 Difference]: Without dead ends: 323 [2020-11-30 02:55:59,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:55:59,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-30 02:55:59,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2020-11-30 02:55:59,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-11-30 02:55:59,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 373 transitions. [2020-11-30 02:55:59,073 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 373 transitions. Word has length 98 [2020-11-30 02:55:59,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:55:59,073 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 373 transitions. [2020-11-30 02:55:59,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:55:59,074 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 373 transitions. [2020-11-30 02:55:59,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-30 02:55:59,079 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:55:59,080 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:55:59,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:55:59,082 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:55:59,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:55:59,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1373218568, now seen corresponding path program 1 times [2020-11-30 02:55:59,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:55:59,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054546128] [2020-11-30 02:55:59,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:55:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:55:59,200 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:55:59,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054546128] [2020-11-30 02:55:59,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:55:59,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:55:59,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330535480] [2020-11-30 02:55:59,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:55:59,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:55:59,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:55:59,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:55:59,204 INFO L87 Difference]: Start difference. First operand 243 states and 373 transitions. Second operand 3 states. [2020-11-30 02:55:59,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:55:59,896 INFO L93 Difference]: Finished difference Result 565 states and 885 transitions. [2020-11-30 02:55:59,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:55:59,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-11-30 02:55:59,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:55:59,900 INFO L225 Difference]: With dead ends: 565 [2020-11-30 02:55:59,900 INFO L226 Difference]: Without dead ends: 323 [2020-11-30 02:55:59,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:55:59,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-30 02:55:59,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-11-30 02:55:59,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-30 02:55:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 493 transitions. [2020-11-30 02:55:59,934 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 493 transitions. Word has length 103 [2020-11-30 02:55:59,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:55:59,935 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 493 transitions. [2020-11-30 02:55:59,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:55:59,935 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 493 transitions. [2020-11-30 02:55:59,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-30 02:55:59,939 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:55:59,940 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:55:59,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:55:59,941 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:55:59,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:55:59,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1281009618, now seen corresponding path program 1 times [2020-11-30 02:55:59,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:55:59,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812718654] [2020-11-30 02:55:59,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:56:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:56:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:56:00,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812718654] [2020-11-30 02:56:00,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075061960] [2020-11-30 02:56:00,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4721094-3b5a-4d46-828b-83860446555d/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:56:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:56:00,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:56:00,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:56:00,910 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 02:56:00,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:56:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 02:56:01,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:56:01,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-30 02:56:01,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106272023] [2020-11-30 02:56:01,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:56:01,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:56:01,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:56:01,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:56:01,015 INFO L87 Difference]: Start difference. First operand 323 states and 493 transitions. Second operand 3 states. [2020-11-30 02:56:01,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:56:01,732 INFO L93 Difference]: Finished difference Result 885 states and 1336 transitions. [2020-11-30 02:56:01,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:56:01,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-11-30 02:56:01,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:56:01,737 INFO L225 Difference]: With dead ends: 885 [2020-11-30 02:56:01,737 INFO L226 Difference]: Without dead ends: 563 [2020-11-30 02:56:01,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:56:01,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-30 02:56:01,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2020-11-30 02:56:01,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-11-30 02:56:01,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 683 transitions. [2020-11-30 02:56:01,783 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 683 transitions. Word has length 107 [2020-11-30 02:56:01,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:56:01,786 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 683 transitions. [2020-11-30 02:56:01,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:56:01,786 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 683 transitions. [2020-11-30 02:56:01,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-30 02:56:01,789 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:56:01,789 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:56:02,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:56:02,017 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:56:02,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:56:02,018 INFO L82 PathProgramCache]: Analyzing trace with hash 441532444, now seen corresponding path program 1 times [2020-11-30 02:56:02,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:56:02,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458179611] [2020-11-30 02:56:02,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:56:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:56:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-30 02:56:02,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458179611] [2020-11-30 02:56:02,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:56:02,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:56:02,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745958622] [2020-11-30 02:56:02,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:56:02,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:56:02,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:56:02,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:56:02,126 INFO L87 Difference]: Start difference. First operand 483 states and 683 transitions. Second operand 3 states. [2020-11-30 02:56:02,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:56:02,836 INFO L93 Difference]: Finished difference Result 1205 states and 1716 transitions. [2020-11-30 02:56:02,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:56:02,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-30 02:56:02,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:56:02,843 INFO L225 Difference]: With dead ends: 1205 [2020-11-30 02:56:02,843 INFO L226 Difference]: Without dead ends: 723 [2020-11-30 02:56:02,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:56:02,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-11-30 02:56:02,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2020-11-30 02:56:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-11-30 02:56:02,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 954 transitions. [2020-11-30 02:56:02,871 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 954 transitions. Word has length 111 [2020-11-30 02:56:02,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:56:02,874 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 954 transitions. [2020-11-30 02:56:02,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:56:02,874 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 954 transitions. [2020-11-30 02:56:02,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-30 02:56:02,882 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:56:02,883 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-30 02:56:02,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 02:56:02,884 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:56:02,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:56:02,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1265111170, now seen corresponding path program 1 times [2020-11-30 02:56:02,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:56:02,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476738905] [2020-11-30 02:56:02,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:56:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:56:03,056 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 02:56:03,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476738905] [2020-11-30 02:56:03,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:56:03,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:56:03,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803794597] [2020-11-30 02:56:03,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:56:03,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:56:03,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:56:03,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:56:03,060 INFO L87 Difference]: Start difference. First operand 723 states and 954 transitions. Second operand 3 states. [2020-11-30 02:56:03,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:56:03,732 INFO L93 Difference]: Finished difference Result 1605 states and 2097 transitions. [2020-11-30 02:56:03,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:56:03,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-11-30 02:56:03,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:56:03,745 INFO L225 Difference]: With dead ends: 1605 [2020-11-30 02:56:03,748 INFO L226 Difference]: Without dead ends: 723 [2020-11-30 02:56:03,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:56:03,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-11-30 02:56:03,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 643. [2020-11-30 02:56:03,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-11-30 02:56:03,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 784 transitions. [2020-11-30 02:56:03,778 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 784 transitions. Word has length 171 [2020-11-30 02:56:03,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:56:03,778 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 784 transitions. [2020-11-30 02:56:03,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:56:03,779 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 784 transitions. [2020-11-30 02:56:03,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-30 02:56:03,792 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:56:03,793 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-11-30 02:56:03,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 02:56:03,793 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:56:03,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:56:03,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1466326167, now seen corresponding path program 1 times [2020-11-30 02:56:03,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:56:03,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783776297] [2020-11-30 02:56:03,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:56:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:56:03,969 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 72 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-11-30 02:56:03,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783776297] [2020-11-30 02:56:03,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299974069] [2020-11-30 02:56:03,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4721094-3b5a-4d46-828b-83860446555d/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:56:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:56:04,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:56:04,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:56:04,251 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-11-30 02:56:04,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:56:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-11-30 02:56:04,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:56:04,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-11-30 02:56:04,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623057838] [2020-11-30 02:56:04,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:56:04,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:56:04,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:56:04,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:56:04,351 INFO L87 Difference]: Start difference. First operand 643 states and 784 transitions. Second operand 3 states. [2020-11-30 02:56:04,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:56:04,956 INFO L93 Difference]: Finished difference Result 1767 states and 2112 transitions. [2020-11-30 02:56:04,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:56:04,957 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2020-11-30 02:56:04,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:56:04,969 INFO L225 Difference]: With dead ends: 1767 [2020-11-30 02:56:04,969 INFO L226 Difference]: Without dead ends: 1125 [2020-11-30 02:56:04,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:56:04,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-11-30 02:56:05,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 963. [2020-11-30 02:56:05,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-11-30 02:56:05,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1143 transitions. [2020-11-30 02:56:05,018 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1143 transitions. Word has length 181 [2020-11-30 02:56:05,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:56:05,018 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1143 transitions. [2020-11-30 02:56:05,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:56:05,019 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1143 transitions. [2020-11-30 02:56:05,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-11-30 02:56:05,024 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:56:05,024 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-30 02:56:05,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:56:05,245 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:56:05,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:56:05,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1374876874, now seen corresponding path program 1 times [2020-11-30 02:56:05,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:56:05,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077451382] [2020-11-30 02:56:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:56:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:56:05,411 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-11-30 02:56:05,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077451382] [2020-11-30 02:56:05,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374539227] [2020-11-30 02:56:05,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4721094-3b5a-4d46-828b-83860446555d/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:56:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:56:05,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:56:05,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:56:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-11-30 02:56:05,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:56:05,751 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-11-30 02:56:05,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:56:05,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-30 02:56:05,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945430738] [2020-11-30 02:56:05,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:56:05,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:56:05,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:56:05,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:56:05,755 INFO L87 Difference]: Start difference. First operand 963 states and 1143 transitions. Second operand 3 states. [2020-11-30 02:56:06,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:56:06,410 INFO L93 Difference]: Finished difference Result 2085 states and 2516 transitions. [2020-11-30 02:56:06,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:56:06,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2020-11-30 02:56:06,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:56:06,422 INFO L225 Difference]: With dead ends: 2085 [2020-11-30 02:56:06,424 INFO L226 Difference]: Without dead ends: 1203 [2020-11-30 02:56:06,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 367 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:56:06,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2020-11-30 02:56:06,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 963. [2020-11-30 02:56:06,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-11-30 02:56:06,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1149 transitions. [2020-11-30 02:56:06,461 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1149 transitions. Word has length 185 [2020-11-30 02:56:06,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:56:06,462 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1149 transitions. [2020-11-30 02:56:06,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:56:06,462 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1149 transitions. [2020-11-30 02:56:06,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-11-30 02:56:06,467 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:56:06,468 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-30 02:56:06,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:56:06,681 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:56:06,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:56:06,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1365102460, now seen corresponding path program 1 times [2020-11-30 02:56:06,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:56:06,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674492801] [2020-11-30 02:56:06,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:56:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:56:06,929 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 87 proven. 8 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-11-30 02:56:06,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674492801] [2020-11-30 02:56:06,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903563461] [2020-11-30 02:56:06,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4721094-3b5a-4d46-828b-83860446555d/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:56:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:56:07,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:56:07,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:56:07,160 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-11-30 02:56:07,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:56:07,203 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-11-30 02:56:07,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:56:07,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-30 02:56:07,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368555437] [2020-11-30 02:56:07,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:56:07,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:56:07,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:56:07,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:56:07,207 INFO L87 Difference]: Start difference. First operand 963 states and 1149 transitions. Second operand 3 states. [2020-11-30 02:56:07,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:56:07,716 INFO L93 Difference]: Finished difference Result 2245 states and 2646 transitions. [2020-11-30 02:56:07,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:56:07,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2020-11-30 02:56:07,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:56:07,724 INFO L225 Difference]: With dead ends: 2245 [2020-11-30 02:56:07,725 INFO L226 Difference]: Without dead ends: 1123 [2020-11-30 02:56:07,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:56:07,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-11-30 02:56:07,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2020-11-30 02:56:07,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-11-30 02:56:07,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1287 transitions. [2020-11-30 02:56:07,767 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1287 transitions. Word has length 192 [2020-11-30 02:56:07,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:56:07,767 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1287 transitions. [2020-11-30 02:56:07,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:56:07,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1287 transitions. [2020-11-30 02:56:07,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-11-30 02:56:07,774 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:56:07,774 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:56:07,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:56:07,985 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:56:07,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:56:07,985 INFO L82 PathProgramCache]: Analyzing trace with hash -201125738, now seen corresponding path program 1 times [2020-11-30 02:56:07,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:56:07,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005242826] [2020-11-30 02:56:07,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:56:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:56:08,264 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:56:08,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005242826] [2020-11-30 02:56:08,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:56:08,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:56:08,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601470711] [2020-11-30 02:56:08,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:56:08,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:56:08,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:56:08,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:56:08,267 INFO L87 Difference]: Start difference. First operand 1123 states and 1287 transitions. Second operand 4 states. [2020-11-30 02:56:09,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:56:09,038 INFO L93 Difference]: Finished difference Result 2165 states and 2488 transitions. [2020-11-30 02:56:09,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:56:09,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 229 [2020-11-30 02:56:09,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:56:09,048 INFO L225 Difference]: With dead ends: 2165 [2020-11-30 02:56:09,048 INFO L226 Difference]: Without dead ends: 1123 [2020-11-30 02:56:09,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:56:09,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-11-30 02:56:09,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2020-11-30 02:56:09,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-11-30 02:56:09,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1283 transitions. [2020-11-30 02:56:09,097 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1283 transitions. Word has length 229 [2020-11-30 02:56:09,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:56:09,098 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1283 transitions. [2020-11-30 02:56:09,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:56:09,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1283 transitions. [2020-11-30 02:56:09,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-11-30 02:56:09,104 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:56:09,105 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:56:09,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 02:56:09,106 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:56:09,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:56:09,107 INFO L82 PathProgramCache]: Analyzing trace with hash 2007378216, now seen corresponding path program 1 times [2020-11-30 02:56:09,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:56:09,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624706387] [2020-11-30 02:56:09,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:56:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:56:09,456 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-11-30 02:56:09,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624706387] [2020-11-30 02:56:09,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:56:09,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:56:09,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661997832] [2020-11-30 02:56:09,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:56:09,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:56:09,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:56:09,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:56:09,459 INFO L87 Difference]: Start difference. First operand 1123 states and 1283 transitions. Second operand 5 states. [2020-11-30 02:56:10,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:56:10,640 INFO L93 Difference]: Finished difference Result 2364 states and 2702 transitions. [2020-11-30 02:56:10,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:56:10,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 237 [2020-11-30 02:56:10,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:56:10,651 INFO L225 Difference]: With dead ends: 2364 [2020-11-30 02:56:10,651 INFO L226 Difference]: Without dead ends: 1076 [2020-11-30 02:56:10,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:56:10,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2020-11-30 02:56:10,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1043. [2020-11-30 02:56:10,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2020-11-30 02:56:10,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1117 transitions. [2020-11-30 02:56:10,712 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1117 transitions. Word has length 237 [2020-11-30 02:56:10,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:56:10,712 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1117 transitions. [2020-11-30 02:56:10,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:56:10,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1117 transitions. [2020-11-30 02:56:10,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-11-30 02:56:10,719 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:56:10,720 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:56:10,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-30 02:56:10,720 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:56:10,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:56:10,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1890388416, now seen corresponding path program 1 times [2020-11-30 02:56:10,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:56:10,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275364707] [2020-11-30 02:56:10,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:56:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:56:10,994 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-11-30 02:56:10,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275364707] [2020-11-30 02:56:10,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:56:10,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:56:10,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561678605] [2020-11-30 02:56:10,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:56:10,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:56:10,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:56:10,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:56:10,997 INFO L87 Difference]: Start difference. First operand 1043 states and 1117 transitions. Second operand 4 states. [2020-11-30 02:56:11,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:56:11,561 INFO L93 Difference]: Finished difference Result 2005 states and 2150 transitions. [2020-11-30 02:56:11,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:56:11,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 257 [2020-11-30 02:56:11,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:56:11,570 INFO L225 Difference]: With dead ends: 2005 [2020-11-30 02:56:11,570 INFO L226 Difference]: Without dead ends: 1043 [2020-11-30 02:56:11,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:56:11,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-11-30 02:56:11,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2020-11-30 02:56:11,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2020-11-30 02:56:11,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1115 transitions. [2020-11-30 02:56:11,610 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1115 transitions. Word has length 257 [2020-11-30 02:56:11,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:56:11,611 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1115 transitions. [2020-11-30 02:56:11,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:56:11,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1115 transitions. [2020-11-30 02:56:11,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-11-30 02:56:11,619 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:56:11,620 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:56:11,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-30 02:56:11,620 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:56:11,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:56:11,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1417041384, now seen corresponding path program 1 times [2020-11-30 02:56:11,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:56:11,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873826705] [2020-11-30 02:56:11,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:56:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:56:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 277 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:56:12,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873826705] [2020-11-30 02:56:12,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292887490] [2020-11-30 02:56:12,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4721094-3b5a-4d46-828b-83860446555d/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:56:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:56:12,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 02:56:12,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:56:12,310 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:56:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 383 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:56:12,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:56:12,926 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 5, 6, 1] term [2020-11-30 02:56:12,927 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:56:12,933 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 5, 6, 1] term [2020-11-30 02:56:12,933 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:56:13,099 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 1] term [2020-11-30 02:56:13,100 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:56:13,371 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 259 proven. 64 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-11-30 02:56:13,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1733752934] [2020-11-30 02:56:13,405 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2020-11-30 02:56:13,406 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:56:13,412 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:56:13,420 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:56:13,421 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:56:14,095 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-11-30 02:56:14,213 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-11-30 02:56:14,365 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-11-30 02:56:19,604 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-11-30 02:56:20,697 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-11-30 02:56:22,645 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-11-30 02:56:22,790 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-11-30 02:56:22,986 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-11-30 02:56:23,106 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-11-30 02:56:23,276 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-11-30 02:56:23,394 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-11-30 02:56:23,604 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-11-30 02:56:23,738 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-11-30 02:56:23,905 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-11-30 02:56:24,113 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-11-30 02:56:25,977 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 154 [2020-11-30 02:56:26,160 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-11-30 02:56:26,434 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-11-30 02:56:26,639 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-11-30 02:56:26,919 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-11-30 02:56:27,126 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-11-30 02:56:27,586 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 180 [2020-11-30 02:56:27,979 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-11-30 02:56:28,346 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-11-30 02:56:28,711 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-11-30 02:56:29,132 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-11-30 02:56:31,495 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-11-30 02:56:31,632 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-11-30 02:56:31,810 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-11-30 02:56:31,951 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-11-30 02:56:32,123 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-11-30 02:56:32,266 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-11-30 02:56:32,582 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 164 [2020-11-30 02:56:32,822 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-11-30 02:56:33,059 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-11-30 02:56:33,269 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-11-30 02:56:35,681 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 61 [2020-11-30 02:56:35,922 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 5790 conjuctions. This might take some time... [2020-11-30 02:56:35,969 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 40 conjuctions. [2020-11-30 02:56:35,972 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 61 [2020-11-30 02:56:36,150 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 5790 conjuctions. This might take some time... [2020-11-30 02:56:36,214 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 40 conjuctions. [2020-11-30 02:56:36,280 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 61 [2020-11-30 02:56:36,420 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 5790 conjuctions. This might take some time... [2020-11-30 02:56:36,464 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 40 conjuctions. [2020-11-30 02:56:38,622 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:56:39,280 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2020-11-30 02:56:39,661 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-11-30 02:56:40,050 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 98 [2020-11-30 02:56:40,550 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 103 [2020-11-30 02:56:41,058 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-11-30 02:56:41,610 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2020-11-30 02:56:41,907 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-30 02:56:42,392 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 105 [2020-11-30 02:56:43,248 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2020-11-30 02:56:44,003 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 105 [2020-11-30 02:56:44,925 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2020-11-30 02:56:46,080 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2020-11-30 02:56:47,072 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2020-11-30 02:56:48,449 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 106 [2020-11-30 02:56:49,304 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 105 [2020-11-30 02:56:50,108 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 106 [2020-11-30 02:56:51,052 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2020-11-30 02:56:52,568 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 115 DAG size of output: 113 [2020-11-30 02:56:55,751 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2020-11-30 02:56:57,057 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 106 [2020-11-30 02:56:58,497 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2020-11-30 02:56:59,395 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2020-11-30 02:57:00,319 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 105 [2020-11-30 02:57:01,413 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2020-11-30 02:57:10,368 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2020-11-30 02:57:10,683 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:57:10,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:57:10,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 13 [2020-11-30 02:57:10,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821506120] [2020-11-30 02:57:10,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 02:57:10,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:57:10,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 02:57:10,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1229, Unknown=0, NotChecked=0, Total=1406 [2020-11-30 02:57:10,688 INFO L87 Difference]: Start difference. First operand 1043 states and 1115 transitions. Second operand 13 states. [2020-11-30 02:57:14,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:57:14,073 INFO L93 Difference]: Finished difference Result 1686 states and 1791 transitions. [2020-11-30 02:57:14,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 02:57:14,074 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 279 [2020-11-30 02:57:14,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:57:14,074 INFO L225 Difference]: With dead ends: 1686 [2020-11-30 02:57:14,074 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:57:14,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 625 SyntacticMatches, 186 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5272 ImplicationChecksByTransitivity, 32.7s TimeCoverageRelationStatistics Valid=239, Invalid=1741, Unknown=0, NotChecked=0, Total=1980 [2020-11-30 02:57:14,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:57:14,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:57:14,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:57:14,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:57:14,079 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 279 [2020-11-30 02:57:14,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:57:14,079 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:57:14,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 02:57:14,080 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:57:14,080 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:57:14,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-30 02:57:14,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:57:14,888 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-11-30 02:57:15,420 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-11-30 02:57:15,425 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-30 02:57:15,425 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-30 02:57:15,425 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-30 02:57:15,425 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-30 02:57:15,425 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-30 02:57:15,425 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-30 02:57:15,425 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-30 02:57:15,426 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-30 02:57:15,426 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-30 02:57:15,426 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-30 02:57:15,426 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-30 02:57:15,426 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-30 02:57:15,426 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-30 02:57:15,426 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-30 02:57:15,426 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-30 02:57:15,426 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-30 02:57:15,426 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-30 02:57:15,426 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-30 02:57:15,426 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-30 02:57:15,426 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-30 02:57:15,426 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-30 02:57:15,427 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-30 02:57:15,427 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-30 02:57:15,427 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-30 02:57:15,427 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-30 02:57:15,427 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-30 02:57:15,427 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:57:15,427 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-30 02:57:15,427 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-30 02:57:15,427 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-30 02:57:15,427 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-30 02:57:15,427 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-30 02:57:15,427 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-30 02:57:15,427 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-30 02:57:15,427 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-30 02:57:15,427 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-30 02:57:15,427 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 02:57:15,428 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-30 02:57:15,428 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-30 02:57:15,428 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-30 02:57:15,428 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-30 02:57:15,428 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-30 02:57:15,428 INFO L274 CegarLoopResult]: For program point L598-1(lines 39 608) no Hoare annotation was computed. [2020-11-30 02:57:15,428 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-30 02:57:15,428 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-30 02:57:15,428 INFO L274 CegarLoopResult]: For program point L601-1(lines 39 608) no Hoare annotation was computed. [2020-11-30 02:57:15,428 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-30 02:57:15,428 INFO L274 CegarLoopResult]: For program point L602(line 602) no Hoare annotation was computed. [2020-11-30 02:57:15,428 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-30 02:57:15,428 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-30 02:57:15,428 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-30 02:57:15,429 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-30 02:57:15,429 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-30 02:57:15,429 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-30 02:57:15,429 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-30 02:57:15,429 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-30 02:57:15,430 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse9 (= ~a28~0 10)) (.cse8 (= ~a17~0 8)) (.cse0 (<= ~a19~0 0)) (.cse12 (= ~a25~0 0)) (.cse6 (= ~a19~0 1)) (.cse1 (= ~a21~0 1)) (.cse3 (not (= ~a11~0 1))) (.cse7 (<= ~a28~0 7)) (.cse4 (<= ~a17~0 8)) (.cse11 (<= 9 ~a28~0)) (.cse2 (= ~a25~0 1)) (.cse10 (<= ~a17~0 7)) (.cse5 (<= ~a28~0 10))) (or (and .cse0 (<= 10 ~a28~0) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse6 .cse2 .cse7 .cse4) (and .cse6 .cse1 .cse8 .cse3 .cse9) (and .cse0 .cse5 .cse10) (and .cse11 .cse6 .cse1 .cse2 .cse4 .cse5) (and .cse6 .cse1 (<= 8 ~a17~0) .cse2 .cse3 .cse4) (and .cse11 .cse12 .cse6 .cse1 (not .cse9) .cse8 .cse5) (and .cse6 .cse7 .cse10) (and .cse0 .cse12 .cse1 .cse7 .cse4) (and .cse0 .cse12 .cse1 .cse3 (= ~a28~0 8) .cse4) (and .cse12 .cse6 .cse1 .cse3 .cse7 .cse4) (and .cse11 .cse2 .cse10 .cse5))) [2020-11-30 02:57:15,430 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-30 02:57:15,431 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-30 02:57:15,451 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-30 02:57:15,451 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-30 02:57:15,451 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-30 02:57:15,451 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-30 02:57:15,452 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-30 02:57:15,452 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-30 02:57:15,452 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:57:15,452 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-30 02:57:15,452 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-30 02:57:15,453 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse9 (= ~a28~0 10)) (.cse8 (= ~a17~0 8)) (.cse0 (<= ~a19~0 0)) (.cse12 (= ~a25~0 0)) (.cse6 (= ~a19~0 1)) (.cse1 (= ~a21~0 1)) (.cse3 (not (= ~a11~0 1))) (.cse7 (<= ~a28~0 7)) (.cse4 (<= ~a17~0 8)) (.cse11 (<= 9 ~a28~0)) (.cse2 (= ~a25~0 1)) (.cse10 (<= ~a17~0 7)) (.cse5 (<= ~a28~0 10))) (or (and .cse0 (<= 10 ~a28~0) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse6 .cse2 .cse7 .cse4) (and .cse6 .cse1 .cse8 .cse3 .cse9) (and .cse0 .cse5 .cse10) (and .cse11 .cse6 .cse1 .cse2 .cse4 .cse5) (and .cse6 .cse1 (<= 8 ~a17~0) .cse2 .cse3 .cse4) (and .cse11 .cse12 .cse6 .cse1 (not .cse9) .cse8 .cse5) (and .cse6 .cse7 .cse10) (and .cse0 .cse12 .cse1 .cse7 .cse4) (and .cse0 .cse12 .cse1 .cse3 (= ~a28~0 8) .cse4) (and .cse12 .cse6 .cse1 .cse3 .cse7 .cse4) (and .cse11 .cse2 .cse10 .cse5))) [2020-11-30 02:57:15,453 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-30 02:57:15,453 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-30 02:57:15,453 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-30 02:57:15,454 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-30 02:57:15,454 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-30 02:57:15,454 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-30 02:57:15,454 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-30 02:57:15,454 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-30 02:57:15,454 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-30 02:57:15,455 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-30 02:57:15,455 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-30 02:57:15,455 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-30 02:57:15,455 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-30 02:57:15,455 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-30 02:57:15,455 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-30 02:57:15,456 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-30 02:57:15,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:57:15 BoogieIcfgContainer [2020-11-30 02:57:15,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:57:15,509 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:57:15,509 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:57:15,510 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:57:15,510 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:55:56" (3/4) ... [2020-11-30 02:57:15,517 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:57:15,556 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-11-30 02:57:15,559 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-30 02:57:15,561 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-30 02:57:15,563 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 02:57:15,741 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d4721094-3b5a-4d46-828b-83860446555d/bin/utaipan/witness.graphml [2020-11-30 02:57:15,741 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:57:15,743 INFO L168 Benchmark]: Toolchain (without parser) took 84370.43 ms. Allocated memory was 102.8 MB in the beginning and 780.1 MB in the end (delta: 677.4 MB). Free memory was 72.1 MB in the beginning and 724.2 MB in the end (delta: -652.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:57:15,743 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 79.7 MB. Free memory was 41.0 MB in the beginning and 41.0 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:57:15,743 INFO L168 Benchmark]: CACSL2BoogieTranslator took 871.59 ms. Allocated memory is still 102.8 MB. Free memory was 71.7 MB in the beginning and 64.1 MB in the end (delta: 7.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:57:15,744 INFO L168 Benchmark]: Boogie Procedure Inliner took 141.44 ms. Allocated memory is still 102.8 MB. Free memory was 64.1 MB in the beginning and 58.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:57:15,744 INFO L168 Benchmark]: Boogie Preprocessor took 80.45 ms. Allocated memory is still 102.8 MB. Free memory was 58.8 MB in the beginning and 54.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:57:15,745 INFO L168 Benchmark]: RCFGBuilder took 3566.50 ms. Allocated memory was 102.8 MB in the beginning and 134.2 MB in the end (delta: 31.5 MB). Free memory was 54.1 MB in the beginning and 93.6 MB in the end (delta: -39.4 MB). Peak memory consumption was 45.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:57:15,746 INFO L168 Benchmark]: TraceAbstraction took 79468.55 ms. Allocated memory was 134.2 MB in the beginning and 780.1 MB in the end (delta: 645.9 MB). Free memory was 92.5 MB in the beginning and 740.0 MB in the end (delta: -647.5 MB). Peak memory consumption was 464.0 MB. Max. memory is 16.1 GB. [2020-11-30 02:57:15,746 INFO L168 Benchmark]: Witness Printer took 232.57 ms. Allocated memory is still 780.1 MB. Free memory was 740.0 MB in the beginning and 724.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:57:15,749 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 79.7 MB. Free memory was 41.0 MB in the beginning and 41.0 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 871.59 ms. Allocated memory is still 102.8 MB. Free memory was 71.7 MB in the beginning and 64.1 MB in the end (delta: 7.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 141.44 ms. Allocated memory is still 102.8 MB. Free memory was 64.1 MB in the beginning and 58.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.45 ms. Allocated memory is still 102.8 MB. Free memory was 58.8 MB in the beginning and 54.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3566.50 ms. Allocated memory was 102.8 MB in the beginning and 134.2 MB in the end (delta: 31.5 MB). Free memory was 54.1 MB in the beginning and 93.6 MB in the end (delta: -39.4 MB). Peak memory consumption was 45.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 79468.55 ms. Allocated memory was 134.2 MB in the beginning and 780.1 MB in the end (delta: 645.9 MB). Free memory was 92.5 MB in the beginning and 740.0 MB in the end (delta: -647.5 MB). Peak memory consumption was 464.0 MB. Max. memory is 16.1 GB. * Witness Printer took 232.57 ms. Allocated memory is still 780.1 MB. Free memory was 740.0 MB in the beginning and 724.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((((((((((((a19 <= 0 && 10 <= a28) && a21 == 1) && a25 == 1) && !(a11 == 1)) && a17 <= 8) && a28 <= 10) || (((a19 == 1 && a25 == 1) && a28 <= 7) && a17 <= 8)) || ((((a19 == 1 && a21 == 1) && a17 == 8) && !(a11 == 1)) && a28 == 10)) || ((a19 <= 0 && a28 <= 10) && a17 <= 7)) || (((((9 <= a28 && a19 == 1) && a21 == 1) && a25 == 1) && a17 <= 8) && a28 <= 10)) || (((((a19 == 1 && a21 == 1) && 8 <= a17) && a25 == 1) && !(a11 == 1)) && a17 <= 8)) || ((((((9 <= a28 && a25 == 0) && a19 == 1) && a21 == 1) && !(a28 == 10)) && a17 == 8) && a28 <= 10)) || ((a19 == 1 && a28 <= 7) && a17 <= 7)) || ((((a19 <= 0 && a25 == 0) && a21 == 1) && a28 <= 7) && a17 <= 8)) || (((((a19 <= 0 && a25 == 0) && a21 == 1) && !(a11 == 1)) && a28 == 8) && a17 <= 8)) || (((((a25 == 0 && a19 == 1) && a21 == 1) && !(a11 == 1)) && a28 <= 7) && a17 <= 8)) || (((9 <= a28 && a25 == 1) && a17 <= 7) && a28 <= 10) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((((((((((a19 <= 0 && 10 <= a28) && a21 == 1) && a25 == 1) && !(a11 == 1)) && a17 <= 8) && a28 <= 10) || (((a19 == 1 && a25 == 1) && a28 <= 7) && a17 <= 8)) || ((((a19 == 1 && a21 == 1) && a17 == 8) && !(a11 == 1)) && a28 == 10)) || ((a19 <= 0 && a28 <= 10) && a17 <= 7)) || (((((9 <= a28 && a19 == 1) && a21 == 1) && a25 == 1) && a17 <= 8) && a28 <= 10)) || (((((a19 == 1 && a21 == 1) && 8 <= a17) && a25 == 1) && !(a11 == 1)) && a17 <= 8)) || ((((((9 <= a28 && a25 == 0) && a19 == 1) && a21 == 1) && !(a28 == 10)) && a17 == 8) && a28 <= 10)) || ((a19 == 1 && a28 <= 7) && a17 <= 7)) || ((((a19 <= 0 && a25 == 0) && a21 == 1) && a28 <= 7) && a17 <= 8)) || (((((a19 <= 0 && a25 == 0) && a21 == 1) && !(a11 == 1)) && a28 == 8) && a17 <= 8)) || (((((a25 == 0 && a19 == 1) && a21 == 1) && !(a11 == 1)) && a28 <= 7) && a17 <= 8)) || (((9 <= a28 && a25 == 1) && a17 <= 7) && a28 <= 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 78.1s, OverallIterations: 14, TraceHistogramMax: 6, AutomataDifference: 12.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 959 SDtfs, 1926 SDslu, 171 SDs, 0 SdLazy, 5126 SolverSat, 749 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2218 GetRequests, 1957 SyntacticMatches, 189 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5279 ImplicationChecksByTransitivity, 33.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1123occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 675 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 411 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2162 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 234 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 3265 NumberOfCodeBlocks, 3265 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 4185 ConstructedInterpolants, 0 QuantifiedInterpolants, 3190839 SizeOfPredicates, 4 NumberOfNonLiveVariables, 2082 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 24 InterpolantComputations, 17 PerfectInterpolantSequences, 3639/3870 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...