./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.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_90e3454b-efa2-42b5-bdcf-382433d27045/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_90e3454b-efa2-42b5-bdcf-382433d27045/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_90e3454b-efa2-42b5-bdcf-382433d27045/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_90e3454b-efa2-42b5-bdcf-382433d27045/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_90e3454b-efa2-42b5-bdcf-382433d27045/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_90e3454b-efa2-42b5-bdcf-382433d27045/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 3d2afa409951165ba4b0317a5ac755d680981dee ........................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:01:22,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:01:22,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:01:23,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:01:23,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:01:23,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:01:23,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:01:23,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:01:23,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:01:23,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:01:23,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:01:23,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:01:23,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:01:23,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:01:23,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:01:23,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:01:23,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:01:23,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:01:23,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:01:23,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:01:23,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:01:23,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:01:23,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:01:23,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:01:23,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:01:23,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:01:23,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:01:23,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:01:23,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:01:23,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:01:23,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:01:23,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:01:23,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:01:23,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:01:23,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:01:23,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:01:23,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:01:23,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:01:23,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:01:23,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:01:23,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:01:23,062 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_90e3454b-efa2-42b5-bdcf-382433d27045/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:01:23,086 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:01:23,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:01:23,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:01:23,088 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:01:23,088 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:01:23,088 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:01:23,088 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:01:23,089 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:01:23,089 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:01:23,089 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:01:23,089 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:01:23,089 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:01:23,090 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:01:23,090 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:01:23,090 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:01:23,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:01:23,091 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:01:23,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:01:23,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:01:23,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:01:23,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:01:23,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:01:23,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:01:23,093 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:01:23,093 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:01:23,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:01:23,093 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:01:23,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:01:23,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:01:23,094 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:01:23,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:01:23,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:01:23,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:01:23,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:01:23,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:01:23,096 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:01:23,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:01:23,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:01:23,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:01:23,096 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:01:23,097 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_90e3454b-efa2-42b5-bdcf-382433d27045/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_90e3454b-efa2-42b5-bdcf-382433d27045/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d2afa409951165ba4b0317a5ac755d680981dee [2020-11-22 13:01:23,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:01:23,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:01:23,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:01:23,400 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:01:23,401 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:01:23,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_90e3454b-efa2-42b5-bdcf-382433d27045/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c [2020-11-22 13:01:23,474 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_90e3454b-efa2-42b5-bdcf-382433d27045/bin/utaipan/data/8a74215da/2da6a25d2762414b96d1b1e67d91cbfe/FLAGe3a89b474 [2020-11-22 13:01:23,915 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:01:23,915 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_90e3454b-efa2-42b5-bdcf-382433d27045/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c [2020-11-22 13:01:23,922 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_90e3454b-efa2-42b5-bdcf-382433d27045/bin/utaipan/data/8a74215da/2da6a25d2762414b96d1b1e67d91cbfe/FLAGe3a89b474 [2020-11-22 13:01:24,315 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_90e3454b-efa2-42b5-bdcf-382433d27045/bin/utaipan/data/8a74215da/2da6a25d2762414b96d1b1e67d91cbfe [2020-11-22 13:01:24,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:01:24,322 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:01:24,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:01:24,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:01:24,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:01:24,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:01:24" (1/1) ... [2020-11-22 13:01:24,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c10796e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:24, skipping insertion in model container [2020-11-22 13:01:24,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:01:24" (1/1) ... [2020-11-22 13:01:24,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:01:24,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:01:24,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:01:24,569 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:01:24,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:01:24,627 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:01:24,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:24 WrapperNode [2020-11-22 13:01:24,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:01:24,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:01:24,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:01:24,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:01:24,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:24" (1/1) ... [2020-11-22 13:01:24,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:24" (1/1) ... [2020-11-22 13:01:24,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:01:24,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:01:24,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:01:24,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:01:24,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:24" (1/1) ... [2020-11-22 13:01:24,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:24" (1/1) ... [2020-11-22 13:01:24,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:24" (1/1) ... [2020-11-22 13:01:24,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:24" (1/1) ... [2020-11-22 13:01:24,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:24" (1/1) ... [2020-11-22 13:01:24,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:24" (1/1) ... [2020-11-22 13:01:24,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:24" (1/1) ... [2020-11-22 13:01:24,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:01:24,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:01:24,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:01:24,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:01:24,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90e3454b-efa2-42b5-bdcf-382433d27045/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:01:24,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:01:24,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:01:24,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:01:24,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:01:25,417 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:01:25,417 INFO L298 CfgBuilder]: Removed 21 assume(true) statements. [2020-11-22 13:01:25,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:01:25 BoogieIcfgContainer [2020-11-22 13:01:25,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:01:25,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:01:25,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:01:25,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:01:25,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:01:24" (1/3) ... [2020-11-22 13:01:25,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a3ec44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:01:25, skipping insertion in model container [2020-11-22 13:01:25,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:24" (2/3) ... [2020-11-22 13:01:25,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a3ec44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:01:25, skipping insertion in model container [2020-11-22 13:01:25,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:01:25" (3/3) ... [2020-11-22 13:01:25,433 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound1.c [2020-11-22 13:01:25,444 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:01:25,449 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-22 13:01:25,460 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-22 13:01:25,481 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:01:25,481 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:01:25,481 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:01:25,481 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:01:25,481 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:01:25,482 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:01:25,482 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:01:25,482 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:01:25,494 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-22 13:01:25,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 13:01:25,498 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:25,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 13:01:25,499 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:01:25,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:25,505 INFO L82 PathProgramCache]: Analyzing trace with hash 3391306, now seen corresponding path program 1 times [2020-11-22 13:01:25,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:25,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669341208] [2020-11-22 13:01:25,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:25,623 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:01:25,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497397281] [2020-11-22 13:01:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90e3454b-efa2-42b5-bdcf-382433d27045/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:01:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:25,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:01:25,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:01:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:25,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:01:25,803 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:01:26,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:26,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669341208] [2020-11-22 13:01:26,047 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:01:26,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497397281] [2020-11-22 13:01:26,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:26,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 13:01:26,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218782784] [2020-11-22 13:01:26,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:01:26,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:26,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:01:26,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:01:26,066 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 5 states. [2020-11-22 13:01:29,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:29,084 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-11-22 13:01:29,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 13:01:29,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2020-11-22 13:01:29,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:29,095 INFO L225 Difference]: With dead ends: 52 [2020-11-22 13:01:29,095 INFO L226 Difference]: Without dead ends: 27 [2020-11-22 13:01:29,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:01:29,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-22 13:01:29,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2020-11-22 13:01:29,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-22 13:01:29,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-11-22 13:01:29,135 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 4 [2020-11-22 13:01:29,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:29,136 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-11-22 13:01:29,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:01:29,136 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-11-22 13:01:29,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:01:29,137 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:29,137 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2020-11-22 13:01:29,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-22 13:01:29,353 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:01:29,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:29,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1065581558, now seen corresponding path program 1 times [2020-11-22 13:01:29,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:29,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516507723] [2020-11-22 13:01:29,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:29,371 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:01:29,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318632844] [2020-11-22 13:01:29,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90e3454b-efa2-42b5-bdcf-382433d27045/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:01:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:29,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-22 13:01:29,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:01:29,455 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:29,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:01:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:29,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516507723] [2020-11-22 13:01:29,484 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:01:29,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318632844] [2020-11-22 13:01:29,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:29,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-22 13:01:29,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846180139] [2020-11-22 13:01:29,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:01:29,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:29,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:01:29,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:01:29,488 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-11-22 13:01:29,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:29,513 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-11-22 13:01:29,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:01:29,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-22 13:01:29,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:29,515 INFO L225 Difference]: With dead ends: 26 [2020-11-22 13:01:29,515 INFO L226 Difference]: Without dead ends: 13 [2020-11-22 13:01:29,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:01:29,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-22 13:01:29,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-22 13:01:29,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-22 13:01:29,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-11-22 13:01:29,522 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 10 [2020-11-22 13:01:29,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:29,522 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-11-22 13:01:29,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:01:29,522 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-11-22 13:01:29,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 13:01:29,523 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:29,523 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:29,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:01:29,740 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:01:29,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:29,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1859646237, now seen corresponding path program 1 times [2020-11-22 13:01:29,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:29,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426467677] [2020-11-22 13:01:29,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:29,771 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:01:29,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355432940] [2020-11-22 13:01:29,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90e3454b-efa2-42b5-bdcf-382433d27045/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:01:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:29,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 13:01:29,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:01:29,912 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:01:29,919 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-22 13:01:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:29,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:01:29,965 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:01:30,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:30,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426467677] [2020-11-22 13:01:30,139 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:01:30,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355432940] [2020-11-22 13:01:30,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2127320623] [2020-11-22 13:01:30,170 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-22 13:01:30,170 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 13:01:30,180 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 13:01:30,189 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 13:01:30,190 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 13:01:30,379 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:01:31,089 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 13:01:37,355 WARN L193 SmtUtils]: Spent 6.10 s on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2020-11-22 13:01:38,479 WARN L193 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 93 [2020-11-22 13:01:38,708 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-11-22 13:01:38,949 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-11-22 13:01:39,212 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-11-22 13:01:40,608 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-11-22 13:01:41,783 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-11-22 13:01:43,941 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-11-22 13:01:43,943 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:01:43,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-22 13:01:43,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-11-22 13:01:43,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068073833] [2020-11-22 13:01:43,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 13:01:43,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:43,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 13:01:43,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-11-22 13:01:43,946 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 7 states. [2020-11-22 13:01:44,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:44,128 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-11-22 13:01:44,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:01:44,128 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-11-22 13:01:44,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:44,129 INFO L225 Difference]: With dead ends: 13 [2020-11-22 13:01:44,129 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:01:44,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-11-22 13:01:44,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:01:44,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:01:44,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:01:44,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:01:44,131 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-11-22 13:01:44,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:44,131 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:01:44,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 13:01:44,131 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:01:44,131 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:01:44,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:01:44,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:01:44,460 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-11-22 13:01:44,627 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-11-22 13:01:44,630 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-22 13:01:44,630 INFO L274 CegarLoopResult]: For program point L11(lines 11 12) no Hoare annotation was computed. [2020-11-22 13:01:44,630 INFO L274 CegarLoopResult]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2020-11-22 13:01:44,630 INFO L274 CegarLoopResult]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2020-11-22 13:01:44,630 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:01:44,631 INFO L270 CegarLoopResult]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~k~0 1))) (or (and (= (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~x~0 12)) (+ (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 6) (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 2) (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 5))) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 1) (< 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~c~0) .cse0) (and (<= 0 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 0) (<= 0 ULTIMATE.start_main_~k~0) .cse0))) [2020-11-22 13:01:44,631 INFO L274 CegarLoopResult]: For program point L28-3(lines 28 37) no Hoare annotation was computed. [2020-11-22 13:01:44,631 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-22 13:01:44,631 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:01:44,631 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-22 13:01:44,631 INFO L274 CegarLoopResult]: For program point L10(lines 10 13) no Hoare annotation was computed. [2020-11-22 13:01:44,632 INFO L270 CegarLoopResult]: At program point L10-1(lines 31 32) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~k~0 1))) (or (and (<= 0 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~x~0 0) .cse0 (= ULTIMATE.start_main_~y~0 0) (<= 0 ULTIMATE.start_main_~k~0) .cse1) (and (= (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~x~0 12)) (+ (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 6) (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 2) (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 5))) .cse0 (= ULTIMATE.start_main_~y~0 1) (< 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~c~0) .cse1))) [2020-11-22 13:01:44,632 INFO L274 CegarLoopResult]: For program point L10-2(lines 10 13) no Hoare annotation was computed. [2020-11-22 13:01:44,632 INFO L270 CegarLoopResult]: At program point L10-3(lines 9 15) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~y~0 1) (< 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~c~0) (<= ULTIMATE.start_main_~k~0 1)) (and (= ULTIMATE.start_main_~x~0 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 0))) [2020-11-22 13:01:44,632 INFO L274 CegarLoopResult]: For program point L10-4(lines 10 13) no Hoare annotation was computed. [2020-11-22 13:01:44,632 INFO L277 CegarLoopResult]: At program point L10-5(lines 9 15) the Hoare annotation is: true [2020-11-22 13:01:44,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:01:44 BoogieIcfgContainer [2020-11-22 13:01:44,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:01:44,653 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:01:44,653 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:01:44,653 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:01:44,654 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:01:25" (3/4) ... [2020-11-22 13:01:44,657 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:01:44,667 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-11-22 13:01:44,667 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-22 13:01:44,667 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 13:01:44,668 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:01:44,724 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_90e3454b-efa2-42b5-bdcf-382433d27045/bin/utaipan/witness.graphml [2020-11-22 13:01:44,725 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:01:44,726 INFO L168 Benchmark]: Toolchain (without parser) took 20403.09 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 65.9 MB in the beginning and 56.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:44,726 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 100.7 MB. Free memory was 73.8 MB in the beginning and 73.8 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:01:44,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.97 ms. Allocated memory is still 100.7 MB. Free memory was 65.8 MB in the beginning and 77.5 MB in the end (delta: -11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:44,727 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.94 ms. Allocated memory is still 100.7 MB. Free memory was 77.5 MB in the beginning and 75.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:44,728 INFO L168 Benchmark]: Boogie Preprocessor took 25.06 ms. Allocated memory is still 100.7 MB. Free memory was 75.8 MB in the beginning and 75.0 MB in the end (delta: 811.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:01:44,728 INFO L168 Benchmark]: RCFGBuilder took 723.36 ms. Allocated memory is still 100.7 MB. Free memory was 74.6 MB in the beginning and 56.1 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:44,729 INFO L168 Benchmark]: TraceAbstraction took 19232.71 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 55.7 MB in the beginning and 59.8 MB in the end (delta: -4.1 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:44,730 INFO L168 Benchmark]: Witness Printer took 71.83 ms. Allocated memory is still 121.6 MB. Free memory was 59.8 MB in the beginning and 56.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:44,733 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 100.7 MB. Free memory was 73.8 MB in the beginning and 73.8 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.97 ms. Allocated memory is still 100.7 MB. Free memory was 65.8 MB in the beginning and 77.5 MB in the end (delta: -11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.94 ms. Allocated memory is still 100.7 MB. Free memory was 77.5 MB in the beginning and 75.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.06 ms. Allocated memory is still 100.7 MB. Free memory was 75.8 MB in the beginning and 75.0 MB in the end (delta: 811.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 723.36 ms. Allocated memory is still 100.7 MB. Free memory was 74.6 MB in the beginning and 56.1 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19232.71 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 55.7 MB in the beginning and 59.8 MB in the end (delta: -4.1 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * Witness Printer took 71.83 ms. Allocated memory is still 121.6 MB. Free memory was 59.8 MB in the beginning and 56.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((y * y + x * 12 == y * y * y * y * y * 6 + y * y * y * y * y * y * 2 + y * y * y * y * 5 && 1 <= cond) && y == 1) && 0 < k) && k <= c) && k <= 1) || ((((0 <= c && x == 0) && y == 0) && 0 <= k) && k <= 1) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: (((y == 1 && 0 < k) && k <= c) && k <= 1) || ((x == 0 && 1 <= cond) && y == 0) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (((((0 <= c && x == 0) && 1 <= cond) && y == 0) && 0 <= k) && k <= 1) || (((((y * y + x * 12 == y * y * y * y * y * 6 + y * y * y * y * y * y * 2 + y * y * y * y * 5 && 1 <= cond) && y == 1) && 0 < k) && k <= c) && k <= 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.8s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 44 SDslu, 33 SDs, 0 SdLazy, 52 SolverSat, 17 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=1, 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, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 160 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 3187 SizeOfPredicates, 9 NumberOfNonLiveVariables, 203 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 14/20 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...