./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.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_e32485e5-b61a-46ec-bed0-5012da49d989/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e32485e5-b61a-46ec-bed0-5012da49d989/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e32485e5-b61a-46ec-bed0-5012da49d989/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e32485e5-b61a-46ec-bed0-5012da49d989/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e32485e5-b61a-46ec-bed0-5012da49d989/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e32485e5-b61a-46ec-bed0-5012da49d989/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 ed46dd72b47544e751c43723d7d519a92e121aab ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 03:35:45,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 03:35:45,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 03:35:45,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 03:35:45,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 03:35:45,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 03:35:45,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 03:35:46,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 03:35:46,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 03:35:46,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 03:35:46,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 03:35:46,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 03:35:46,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 03:35:46,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 03:35:46,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 03:35:46,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 03:35:46,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 03:35:46,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 03:35:46,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 03:35:46,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 03:35:46,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 03:35:46,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 03:35:46,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 03:35:46,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 03:35:46,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 03:35:46,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 03:35:46,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 03:35:46,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 03:35:46,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 03:35:46,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 03:35:46,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 03:35:46,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 03:35:46,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 03:35:46,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 03:35:46,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 03:35:46,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 03:35:46,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 03:35:46,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 03:35:46,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 03:35:46,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 03:35:46,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 03:35:46,083 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e32485e5-b61a-46ec-bed0-5012da49d989/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 03:35:46,142 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 03:35:46,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 03:35:46,143 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 03:35:46,143 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 03:35:46,144 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 03:35:46,144 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 03:35:46,144 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 03:35:46,145 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 03:35:46,145 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 03:35:46,145 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 03:35:46,145 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 03:35:46,146 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 03:35:46,146 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 03:35:46,146 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 03:35:46,147 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 03:35:46,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 03:35:46,148 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 03:35:46,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 03:35:46,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 03:35:46,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 03:35:46,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 03:35:46,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 03:35:46,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 03:35:46,150 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 03:35:46,150 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 03:35:46,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 03:35:46,151 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 03:35:46,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 03:35:46,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 03:35:46,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 03:35:46,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 03:35:46,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:35:46,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 03:35:46,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 03:35:46,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 03:35:46,153 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 03:35:46,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 03:35:46,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 03:35:46,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 03:35:46,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 03:35:46,155 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_e32485e5-b61a-46ec-bed0-5012da49d989/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e32485e5-b61a-46ec-bed0-5012da49d989/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed46dd72b47544e751c43723d7d519a92e121aab [2020-11-30 03:35:46,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 03:35:46,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 03:35:46,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 03:35:46,491 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 03:35:46,492 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 03:35:46,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e32485e5-b61a-46ec-bed0-5012da49d989/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2020-11-30 03:35:46,615 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e32485e5-b61a-46ec-bed0-5012da49d989/bin/utaipan/data/41134e045/ddff09ecbcb74f2cbdc822da0a1c4e6b/FLAGf5fc79d23 [2020-11-30 03:35:47,124 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 03:35:47,124 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e32485e5-b61a-46ec-bed0-5012da49d989/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2020-11-30 03:35:47,133 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e32485e5-b61a-46ec-bed0-5012da49d989/bin/utaipan/data/41134e045/ddff09ecbcb74f2cbdc822da0a1c4e6b/FLAGf5fc79d23 [2020-11-30 03:35:47,473 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e32485e5-b61a-46ec-bed0-5012da49d989/bin/utaipan/data/41134e045/ddff09ecbcb74f2cbdc822da0a1c4e6b [2020-11-30 03:35:47,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 03:35:47,477 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 03:35:47,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 03:35:47,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 03:35:47,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 03:35:47,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:35:47" (1/1) ... [2020-11-30 03:35:47,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52923979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:35:47, skipping insertion in model container [2020-11-30 03:35:47,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:35:47" (1/1) ... [2020-11-30 03:35:47,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 03:35:47,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 03:35:47,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:35:47,735 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 03:35:47,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:35:47,781 INFO L208 MainTranslator]: Completed translation [2020-11-30 03:35:47,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:35:47 WrapperNode [2020-11-30 03:35:47,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 03:35:47,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 03:35:47,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 03:35:47,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 03:35:47,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:35:47" (1/1) ... [2020-11-30 03:35:47,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:35:47" (1/1) ... [2020-11-30 03:35:47,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 03:35:47,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 03:35:47,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 03:35:47,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 03:35:47,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:35:47" (1/1) ... [2020-11-30 03:35:47,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:35:47" (1/1) ... [2020-11-30 03:35:47,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:35:47" (1/1) ... [2020-11-30 03:35:47,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:35:47" (1/1) ... [2020-11-30 03:35:47,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:35:47" (1/1) ... [2020-11-30 03:35:47,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:35:47" (1/1) ... [2020-11-30 03:35:47,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:35:47" (1/1) ... [2020-11-30 03:35:47,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 03:35:47,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 03:35:47,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 03:35:47,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 03:35:47,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:35:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e32485e5-b61a-46ec-bed0-5012da49d989/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 03:35:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 03:35:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 03:35:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 03:35:47,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 03:36:01,398 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 03:36:01,399 INFO L298 CfgBuilder]: Removed 44 assume(true) statements. [2020-11-30 03:36:01,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:36:01 BoogieIcfgContainer [2020-11-30 03:36:01,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 03:36:01,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 03:36:01,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 03:36:01,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 03:36:01,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 03:35:47" (1/3) ... [2020-11-30 03:36:01,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@250e8a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:36:01, skipping insertion in model container [2020-11-30 03:36:01,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:35:47" (2/3) ... [2020-11-30 03:36:01,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@250e8a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:36:01, skipping insertion in model container [2020-11-30 03:36:01,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:36:01" (3/3) ... [2020-11-30 03:36:01,416 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound2.c [2020-11-30 03:36:01,429 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 03:36:01,434 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-11-30 03:36:01,491 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-11-30 03:36:01,543 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 03:36:01,547 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 03:36:01,547 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 03:36:01,547 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 03:36:01,548 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 03:36:01,548 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 03:36:01,548 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 03:36:01,548 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 03:36:01,572 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-11-30 03:36:01,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 03:36:01,579 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:36:01,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 03:36:01,581 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:36:01,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:36:01,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1401312312, now seen corresponding path program 1 times [2020-11-30 03:36:01,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:36:01,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808083448] [2020-11-30 03:36:01,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:36:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:36:01,759 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 03:36:01,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808083448] [2020-11-30 03:36:01,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:36:01,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:36:01,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879136170] [2020-11-30 03:36:01,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 03:36:01,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:36:01,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 03:36:01,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 03:36:01,786 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2020-11-30 03:36:01,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:36:01,814 INFO L93 Difference]: Finished difference Result 84 states and 109 transitions. [2020-11-30 03:36:01,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 03:36:01,815 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-30 03:36:01,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:36:01,830 INFO L225 Difference]: With dead ends: 84 [2020-11-30 03:36:01,831 INFO L226 Difference]: Without dead ends: 42 [2020-11-30 03:36:01,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 03:36:01,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-30 03:36:01,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-30 03:36:01,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-30 03:36:01,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-11-30 03:36:01,886 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 6 [2020-11-30 03:36:01,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:36:01,886 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-11-30 03:36:01,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 03:36:01,886 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-11-30 03:36:01,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 03:36:01,887 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:36:01,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:36:01,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 03:36:01,888 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:36:01,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:36:01,889 INFO L82 PathProgramCache]: Analyzing trace with hash 49537040, now seen corresponding path program 1 times [2020-11-30 03:36:01,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:36:01,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714895357] [2020-11-30 03:36:01,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:36:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:36:01,959 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 03:36:01,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714895357] [2020-11-30 03:36:01,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:36:01,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 03:36:01,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854818218] [2020-11-30 03:36:01,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 03:36:01,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:36:01,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 03:36:01,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:36:01,963 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 4 states. [2020-11-30 03:36:01,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:36:01,996 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2020-11-30 03:36:01,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:36:01,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 03:36:01,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:36:01,998 INFO L225 Difference]: With dead ends: 82 [2020-11-30 03:36:01,998 INFO L226 Difference]: Without dead ends: 44 [2020-11-30 03:36:01,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:36:02,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-30 03:36:02,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-11-30 03:36:02,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-30 03:36:02,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-11-30 03:36:02,006 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 7 [2020-11-30 03:36:02,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:36:02,007 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-11-30 03:36:02,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 03:36:02,007 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-11-30 03:36:02,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 03:36:02,008 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:36:02,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:36:02,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 03:36:02,008 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:36:02,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:36:02,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1584442994, now seen corresponding path program 1 times [2020-11-30 03:36:02,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:36:02,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471103212] [2020-11-30 03:36:02,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:36:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:36:02,369 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 03:36:02,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471103212] [2020-11-30 03:36:02,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:36:02,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 03:36:02,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371858122] [2020-11-30 03:36:02,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:36:02,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:36:02,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:36:02,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:36:02,371 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 5 states. [2020-11-30 03:36:21,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:36:21,324 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2020-11-30 03:36:21,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 03:36:21,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-30 03:36:21,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:36:21,327 INFO L225 Difference]: With dead ends: 70 [2020-11-30 03:36:21,327 INFO L226 Difference]: Without dead ends: 68 [2020-11-30 03:36:21,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 03:36:21,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-30 03:36:21,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 48. [2020-11-30 03:36:21,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-30 03:36:21,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2020-11-30 03:36:21,355 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 8 [2020-11-30 03:36:21,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:36:21,356 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2020-11-30 03:36:21,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:36:21,356 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2020-11-30 03:36:21,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 03:36:21,357 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:36:21,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:36:21,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 03:36:21,358 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:36:21,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:36:21,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1873115470, now seen corresponding path program 1 times [2020-11-30 03:36:21,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:36:21,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834875291] [2020-11-30 03:36:21,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:36:21,385 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:36:21,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714378300] [2020-11-30 03:36:21,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e32485e5-b61a-46ec-bed0-5012da49d989/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 03:36:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:36:21,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 03:36:21,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:36:21,552 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 03:36:21,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:36:21,595 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 03:36:21,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834875291] [2020-11-30 03:36:21,596 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:36:21,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714378300] [2020-11-30 03:36:21,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:36:21,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-30 03:36:21,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873073799] [2020-11-30 03:36:21,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:36:21,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:36:21,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:36:21,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:36:21,599 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand 5 states. [2020-11-30 03:36:21,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:36:21,658 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-11-30 03:36:21,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 03:36:21,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-30 03:36:21,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:36:21,660 INFO L225 Difference]: With dead ends: 61 [2020-11-30 03:36:21,660 INFO L226 Difference]: Without dead ends: 49 [2020-11-30 03:36:21,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:36:21,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-30 03:36:21,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-11-30 03:36:21,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-30 03:36:21,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-11-30 03:36:21,670 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 9 [2020-11-30 03:36:21,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:36:21,670 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-11-30 03:36:21,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:36:21,671 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-11-30 03:36:21,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 03:36:21,671 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:36:21,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:36:21,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:36:21,883 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:36:21,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:36:21,884 INFO L82 PathProgramCache]: Analyzing trace with hash -2063485739, now seen corresponding path program 1 times [2020-11-30 03:36:21,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:36:21,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329263185] [2020-11-30 03:36:21,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:36:21,914 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:36:21,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29166195] [2020-11-30 03:36:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e32485e5-b61a-46ec-bed0-5012da49d989/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 03:36:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:36:21,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 03:36:21,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:36:22,012 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 03:36:22,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:36:22,069 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:36:29,542 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-30 03:36:29,647 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 03:36:29,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329263185] [2020-11-30 03:36:29,648 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:36:29,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29166195] [2020-11-30 03:36:29,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:36:29,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 03:36:29,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56967888] [2020-11-30 03:36:29,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:36:29,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:36:29,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:36:29,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=10, Unknown=2, NotChecked=0, Total=20 [2020-11-30 03:36:29,659 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2020-11-30 03:36:52,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:36:52,540 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-11-30 03:36:52,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:36:52,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-30 03:36:52,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:36:52,542 INFO L225 Difference]: With dead ends: 59 [2020-11-30 03:36:52,542 INFO L226 Difference]: Without dead ends: 57 [2020-11-30 03:36:52,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2020-11-30 03:36:52,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-30 03:36:52,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2020-11-30 03:36:52,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-30 03:36:52,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-11-30 03:36:52,552 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 10 [2020-11-30 03:36:52,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:36:52,553 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-11-30 03:36:52,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:36:52,553 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-11-30 03:36:52,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 03:36:52,554 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:36:52,554 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:36:52,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:36:52,768 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:36:52,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:36:52,768 INFO L82 PathProgramCache]: Analyzing trace with hash -793149833, now seen corresponding path program 1 times [2020-11-30 03:36:52,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:36:52,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782276635] [2020-11-30 03:36:52,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:36:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:36:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:36:52,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782276635] [2020-11-30 03:36:52,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347580851] [2020-11-30 03:36:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e32485e5-b61a-46ec-bed0-5012da49d989/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 03:36:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:36:52,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 03:36:52,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:36:52,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:36:52,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:36:52,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:36:52,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [23974463] [2020-11-30 03:36:53,022 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-11-30 03:36:53,022 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 03:36:53,032 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 03:36:53,039 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 03:36:53,040 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 03:36:53,156 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 03:36:53,879 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 03:36:54,322 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2020-11-30 03:36:55,624 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 118 DAG size of output: 98 [2020-11-30 03:36:55,839 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2020-11-30 03:36:56,050 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2020-11-30 03:36:56,278 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2020-11-30 03:36:56,714 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-11-30 03:36:56,715 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:36:56,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 03:36:56,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2020-11-30 03:36:56,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122743150] [2020-11-30 03:36:56,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 03:36:56,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:36:56,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 03:36:56,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-30 03:36:56,718 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 6 states. [2020-11-30 03:36:56,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:36:56,804 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2020-11-30 03:36:56,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 03:36:56,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-30 03:36:56,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:36:56,811 INFO L225 Difference]: With dead ends: 98 [2020-11-30 03:36:56,811 INFO L226 Difference]: Without dead ends: 55 [2020-11-30 03:36:56,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-11-30 03:36:56,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-30 03:36:56,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-30 03:36:56,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-30 03:36:56,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-11-30 03:36:56,824 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 10 [2020-11-30 03:36:56,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:36:56,824 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-11-30 03:36:56,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 03:36:56,825 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-11-30 03:36:56,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 03:36:56,826 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:36:56,826 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:36:57,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:36:57,043 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:36:57,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:36:57,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1230953707, now seen corresponding path program 1 times [2020-11-30 03:36:57,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:36:57,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587277662] [2020-11-30 03:36:57,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:36:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:36:57,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:36:57,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587277662] [2020-11-30 03:36:57,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811235315] [2020-11-30 03:36:57,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e32485e5-b61a-46ec-bed0-5012da49d989/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 03:36:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:36:57,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 03:36:57,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:36:57,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:36:57,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:36:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:36:57,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 03:36:57,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5] total 6 [2020-11-30 03:36:57,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733398512] [2020-11-30 03:36:57,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 03:36:57,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:36:57,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 03:36:57,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 03:36:57,269 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 6 states. [2020-11-30 03:36:57,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:36:57,327 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2020-11-30 03:36:57,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 03:36:57,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-30 03:36:57,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:36:57,329 INFO L225 Difference]: With dead ends: 88 [2020-11-30 03:36:57,332 INFO L226 Difference]: Without dead ends: 47 [2020-11-30 03:36:57,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-30 03:36:57,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-30 03:36:57,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-11-30 03:36:57,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-30 03:36:57,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-11-30 03:36:57,339 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 11 [2020-11-30 03:36:57,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:36:57,339 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-11-30 03:36:57,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 03:36:57,340 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-11-30 03:36:57,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 03:36:57,340 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:36:57,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:36:57,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:36:57,560 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:36:57,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:36:57,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1265283064, now seen corresponding path program 1 times [2020-11-30 03:36:57,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:36:57,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535064601] [2020-11-30 03:36:57,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:36:57,574 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:36:57,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [643855968] [2020-11-30 03:36:57,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e32485e5-b61a-46ec-bed0-5012da49d989/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 03:36:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:36:57,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 03:36:57,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:36:57,685 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 03:36:57,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:36:59,983 WARN L838 $PredicateComparison]: unable to prove that (= (mod (let ((.cse0 (* c_ULTIMATE.start_main_~h~0 12))) (+ (* (* (* c_ULTIMATE.start_main_~h~0 c_ULTIMATE.start_main_~q~0) c_ULTIMATE.start_main_~q~0) 4294967295) (* (* (* c_ULTIMATE.start_main_~n~0 16) c_ULTIMATE.start_main_~p~0) c_ULTIMATE.start_main_~q~0) (* (* .cse0 c_ULTIMATE.start_main_~q~0) c_ULTIMATE.start_main_~r~0) (* (* (* (* c_ULTIMATE.start_main_~p~0 16) c_ULTIMATE.start_main_~q~0) c_ULTIMATE.start_main_~r~0) 4294967295) (* (* c_ULTIMATE.start_main_~h~0 c_ULTIMATE.start_main_~h~0) c_ULTIMATE.start_main_~h~0) (* (* (* (* c_ULTIMATE.start_main_~p~0 4) c_ULTIMATE.start_main_~q~0) c_ULTIMATE.start_main_~q~0) 4294967295) (* (* (* .cse0 c_ULTIMATE.start_main_~n~0) c_ULTIMATE.start_main_~q~0) 4294967295))) 4294967296) 0) is different from false [2020-11-30 03:37:02,261 WARN L860 $PredicateComparison]: unable to prove that (= (mod (let ((.cse0 (* c_ULTIMATE.start_main_~h~0 12))) (+ (* (* (* c_ULTIMATE.start_main_~h~0 c_ULTIMATE.start_main_~q~0) c_ULTIMATE.start_main_~q~0) 4294967295) (* (* (* c_ULTIMATE.start_main_~n~0 16) c_ULTIMATE.start_main_~p~0) c_ULTIMATE.start_main_~q~0) (* (* .cse0 c_ULTIMATE.start_main_~q~0) c_ULTIMATE.start_main_~r~0) (* (* (* (* c_ULTIMATE.start_main_~p~0 16) c_ULTIMATE.start_main_~q~0) c_ULTIMATE.start_main_~r~0) 4294967295) (* (* c_ULTIMATE.start_main_~h~0 c_ULTIMATE.start_main_~h~0) c_ULTIMATE.start_main_~h~0) (* (* (* (* c_ULTIMATE.start_main_~p~0 4) c_ULTIMATE.start_main_~q~0) c_ULTIMATE.start_main_~q~0) 4294967295) (* (* (* .cse0 c_ULTIMATE.start_main_~n~0) c_ULTIMATE.start_main_~q~0) 4294967295))) 4294967296) 0) is different from true [2020-11-30 03:37:02,265 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 03:37:02,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535064601] [2020-11-30 03:37:02,266 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:37:02,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643855968] [2020-11-30 03:37:02,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:37:02,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 03:37:02,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193462570] [2020-11-30 03:37:02,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:37:02,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:37:02,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:37:02,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=7, Unknown=2, NotChecked=4, Total=20 [2020-11-30 03:37:02,268 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 5 states. [2020-11-30 03:37:04,554 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-11-30 03:37:09,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:37:09,332 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-11-30 03:37:09,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:37:09,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-30 03:37:09,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:37:09,333 INFO L225 Difference]: With dead ends: 65 [2020-11-30 03:37:09,333 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 03:37:09,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=11, Invalid=11, Unknown=2, NotChecked=6, Total=30 [2020-11-30 03:37:09,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 03:37:09,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 03:37:09,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 03:37:09,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-11-30 03:37:09,339 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 12 [2020-11-30 03:37:09,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:37:09,339 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-30 03:37:09,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:37:09,339 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-11-30 03:37:09,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 03:37:09,340 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:37:09,340 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:37:09,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-30 03:37:09,547 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:37:09,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:37:09,548 INFO L82 PathProgramCache]: Analyzing trace with hash -495117835, now seen corresponding path program 1 times [2020-11-30 03:37:09,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:37:09,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482259893] [2020-11-30 03:37:09,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:37:09,556 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:37:09,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1559038945] [2020-11-30 03:37:09,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e32485e5-b61a-46ec-bed0-5012da49d989/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:37:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:37:09,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 03:37:09,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:37:09,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 03:37:09,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:37:11,690 WARN L838 $PredicateComparison]: unable to prove that (= (mod (let ((.cse0 (* c_ULTIMATE.start_main_~h~0 12))) (+ (* (* .cse0 c_ULTIMATE.start_main_~n~0) 4294967295) (* (* (* c_ULTIMATE.start_main_~p~0 16) c_ULTIMATE.start_main_~r~0) 4294967295) (* c_ULTIMATE.start_main_~p~0 4294967292) (* .cse0 c_ULTIMATE.start_main_~r~0) (* (* c_ULTIMATE.start_main_~n~0 16) c_ULTIMATE.start_main_~p~0) (* (* c_ULTIMATE.start_main_~h~0 c_ULTIMATE.start_main_~h~0) c_ULTIMATE.start_main_~h~0) (* c_ULTIMATE.start_main_~h~0 4294967295))) 4294967296) 0) is different from false [2020-11-30 03:37:13,887 WARN L860 $PredicateComparison]: unable to prove that (= (mod (let ((.cse0 (* c_ULTIMATE.start_main_~h~0 12))) (+ (* (* .cse0 c_ULTIMATE.start_main_~n~0) 4294967295) (* (* (* c_ULTIMATE.start_main_~p~0 16) c_ULTIMATE.start_main_~r~0) 4294967295) (* c_ULTIMATE.start_main_~p~0 4294967292) (* .cse0 c_ULTIMATE.start_main_~r~0) (* (* c_ULTIMATE.start_main_~n~0 16) c_ULTIMATE.start_main_~p~0) (* (* c_ULTIMATE.start_main_~h~0 c_ULTIMATE.start_main_~h~0) c_ULTIMATE.start_main_~h~0) (* c_ULTIMATE.start_main_~h~0 4294967295))) 4294967296) 0) is different from true [2020-11-30 03:37:13,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 03:37:13,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482259893] [2020-11-30 03:37:13,892 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:37:13,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559038945] [2020-11-30 03:37:13,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:37:13,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 03:37:13,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853806252] [2020-11-30 03:37:13,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:37:13,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:37:13,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:37:13,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=7, Unknown=2, NotChecked=4, Total=20 [2020-11-30 03:37:13,894 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2020-11-30 03:37:13,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:37:13,955 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-11-30 03:37:13,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:37:13,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-30 03:37:13,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:37:13,956 INFO L225 Difference]: With dead ends: 23 [2020-11-30 03:37:13,956 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 03:37:13,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=11, Invalid=11, Unknown=2, NotChecked=6, Total=30 [2020-11-30 03:37:13,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 03:37:13,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 03:37:13,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 03:37:13,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 03:37:13,957 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-11-30 03:37:13,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:37:13,957 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 03:37:13,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:37:13,957 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 03:37:13,957 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 03:37:14,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:37:14,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 03:37:14,493 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:37:14,493 INFO L274 CegarLoopResult]: For program point L52-2(lines 20 61) no Hoare annotation was computed. [2020-11-30 03:37:14,493 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:37:14,494 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 03:37:14,494 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:37:14,494 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (and (= ULTIMATE.start_main_~q~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0) (<= 2 ~counter~0) (= ULTIMATE.start_main_~p~0 0)) [2020-11-30 03:37:14,494 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:37:14,494 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 2 ~counter~0) (= ULTIMATE.start_main_~p~0 0)) [2020-11-30 03:37:14,494 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:37:14,494 INFO L270 CegarLoopResult]: At program point L12-5(lines 11 17) the Hoare annotation is: (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 2 ~counter~0) (= ULTIMATE.start_main_~p~0 0)) [2020-11-30 03:37:14,495 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:37:14,495 INFO L270 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 2 ~counter~0) (= ULTIMATE.start_main_~p~0 0)) [2020-11-30 03:37:14,495 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:37:14,495 INFO L270 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 2 ~counter~0) (= ULTIMATE.start_main_~p~0 0)) [2020-11-30 03:37:14,495 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:37:14,495 INFO L270 CegarLoopResult]: At program point L12-11(lines 46 47) the Hoare annotation is: (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 2 ~counter~0) (= ULTIMATE.start_main_~p~0 0)) [2020-11-30 03:37:14,495 INFO L274 CegarLoopResult]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:37:14,496 INFO L270 CegarLoopResult]: At program point L12-13(lines 11 17) the Hoare annotation is: (and (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 2 ~counter~0) (= ULTIMATE.start_main_~p~0 0)) [2020-11-30 03:37:14,496 INFO L274 CegarLoopResult]: For program point L12-14(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:37:14,496 INFO L270 CegarLoopResult]: At program point L12-15(lines 11 17) the Hoare annotation is: (and (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 2 ~counter~0) (= ULTIMATE.start_main_~p~0 0)) [2020-11-30 03:37:14,496 INFO L274 CegarLoopResult]: For program point L12-16(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:37:14,496 INFO L277 CegarLoopResult]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2020-11-30 03:37:14,496 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:37:14,496 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:37:14,496 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:37:14,496 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:37:14,496 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:37:14,496 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:37:14,497 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:37:14,497 INFO L274 CegarLoopResult]: For program point L13-6(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:37:14,497 INFO L274 CegarLoopResult]: For program point L38(lines 38 56) no Hoare annotation was computed. [2020-11-30 03:37:14,497 INFO L274 CegarLoopResult]: For program point L13-7(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:37:14,497 INFO L274 CegarLoopResult]: For program point L13-8(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:37:14,497 INFO L274 CegarLoopResult]: For program point L38-2(lines 38 56) no Hoare annotation was computed. [2020-11-30 03:37:14,497 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:37:14,497 INFO L274 CegarLoopResult]: For program point L30-1(lines 30 35) no Hoare annotation was computed. [2020-11-30 03:37:14,497 INFO L270 CegarLoopResult]: At program point L30-3(lines 30 35) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~h~0 0)) (.cse1 (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) (.cse2 (= ULTIMATE.start_main_~p~0 0))) (or (and (<= 1 ~counter~0) .cse0 .cse1 .cse2) (and (= ULTIMATE.start_main_~q~0 1) .cse0 .cse1 (<= 0 ~counter~0) .cse2))) [2020-11-30 03:37:14,498 INFO L274 CegarLoopResult]: For program point L31(lines 31 32) no Hoare annotation was computed. [2020-11-30 03:37:14,498 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:37:14,498 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:37:14,498 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:37:14,498 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 03:37:14,498 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:37:14,498 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:37:14,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 03:37:14 BoogieIcfgContainer [2020-11-30 03:37:14,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 03:37:14,538 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 03:37:14,538 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 03:37:14,538 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 03:37:14,538 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:36:01" (3/4) ... [2020-11-30 03:37:14,541 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 03:37:14,554 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-30 03:37:14,554 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-30 03:37:14,555 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 03:37:14,555 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 03:37:14,610 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e32485e5-b61a-46ec-bed0-5012da49d989/bin/utaipan/witness.graphml [2020-11-30 03:37:14,619 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 03:37:14,620 INFO L168 Benchmark]: Toolchain (without parser) took 87142.19 ms. Allocated memory is still 109.1 MB. Free memory was 74.7 MB in the beginning and 59.5 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2020-11-30 03:37:14,622 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 109.1 MB. Free memory was 79.9 MB in the beginning and 79.9 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:37:14,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.18 ms. Allocated memory is still 109.1 MB. Free memory was 74.5 MB in the beginning and 84.9 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 03:37:14,623 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.18 ms. Allocated memory is still 109.1 MB. Free memory was 84.9 MB in the beginning and 83.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:37:14,628 INFO L168 Benchmark]: Boogie Preprocessor took 25.77 ms. Allocated memory is still 109.1 MB. Free memory was 83.0 MB in the beginning and 81.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:37:14,628 INFO L168 Benchmark]: RCFGBuilder took 13551.41 ms. Allocated memory is still 109.1 MB. Free memory was 81.7 MB in the beginning and 57.3 MB in the end (delta: 24.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-30 03:37:14,629 INFO L168 Benchmark]: TraceAbstraction took 73134.18 ms. Allocated memory is still 109.1 MB. Free memory was 56.9 MB in the beginning and 62.6 MB in the end (delta: -5.7 MB). Peak memory consumption was 34.8 MB. Max. memory is 16.1 GB. [2020-11-30 03:37:14,629 INFO L168 Benchmark]: Witness Printer took 81.44 ms. Allocated memory is still 109.1 MB. Free memory was 62.6 MB in the beginning and 59.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 03:37:14,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 109.1 MB. Free memory was 79.9 MB in the beginning and 79.9 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.18 ms. Allocated memory is still 109.1 MB. Free memory was 74.5 MB in the beginning and 84.9 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.18 ms. Allocated memory is still 109.1 MB. Free memory was 84.9 MB in the beginning and 83.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.77 ms. Allocated memory is still 109.1 MB. Free memory was 83.0 MB in the beginning and 81.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 13551.41 ms. Allocated memory is still 109.1 MB. Free memory was 81.7 MB in the beginning and 57.3 MB in the end (delta: 24.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 73134.18 ms. Allocated memory is still 109.1 MB. Free memory was 56.9 MB in the beginning and 62.6 MB in the end (delta: -5.7 MB). Peak memory consumption was 34.8 MB. Max. memory is 16.1 GB. * Witness Printer took 81.44 ms. Allocated memory is still 109.1 MB. Free memory was 62.6 MB in the beginning and 59.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((h == 0 && n == r) && 1 <= cond) && 2 <= counter) && p == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((q == 1 && h == 0) && n == r) && 1 <= cond) && 2 <= counter) && p == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((q == 1 && !(0 == cond)) && h == 0) && n == r) && 2 <= counter) && p == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((1 <= counter && h == 0) && n == r) && p == 0) || ((((q == 1 && h == 0) && n == r) && 0 <= counter) && p == 0) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((q == 1 && h == 0) && n == r) && 1 <= cond) && 2 <= counter) && p == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((q == 1 && h == 0) && n == r) && 1 <= cond) && 2 <= counter) && p == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((h == 0 && n == r) && 1 <= cond) && 2 <= counter) && p == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((q == 1 && h == 0) && n == r) && 1 <= cond) && 2 <= counter) && p == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((q == 1 && h == 0) && n == r) && 1 <= cond) && 2 <= counter) && p == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 72.6s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 49.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 317 SDtfs, 182 SDslu, 484 SDs, 0 SdLazy, 178 SolverSat, 53 SolverUnsat, 19 SolverUnknown, 0 SolverNotchecked, 43.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 108 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 21.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 27 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 23 NumberOfFragments, 178 HoareAnnotationTreeSize, 10 FomulaSimplifications, 447 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 68 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 17.3s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 153 ConstructedInterpolants, 7 QuantifiedInterpolants, 16350 SizeOfPredicates, 24 NumberOfNonLiveVariables, 422 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 14/21 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...