./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound50.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_448f57a5-12b5-42d8-ab1d-a64fba080ce4/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound50.c -s /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/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 c4953e406e391e2c67d1b20570a15d48dd5d15f1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:43:25,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:43:25,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:43:25,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:43:25,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:43:25,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:43:25,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:43:25,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:43:25,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:43:25,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:43:25,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:43:25,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:43:25,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:43:25,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:43:25,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:43:25,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:43:25,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:43:25,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:43:25,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:43:25,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:43:25,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:43:25,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:43:25,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:43:25,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:43:25,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:43:25,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:43:25,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:43:25,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:43:25,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:43:25,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:43:25,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:43:25,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:43:25,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:43:25,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:43:25,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:43:25,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:43:25,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:43:25,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:43:25,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:43:25,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:43:25,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:43:25,543 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:43:25,583 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:43:25,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:43:25,585 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:43:25,585 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:43:25,586 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:43:25,586 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:43:25,586 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:43:25,586 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:43:25,587 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:43:25,587 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:43:25,588 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:43:25,588 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:43:25,589 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:43:25,589 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:43:25,589 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:43:25,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:43:25,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:43:25,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:43:25,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:43:25,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:43:25,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:43:25,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:43:25,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:43:25,593 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:43:25,593 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:43:25,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:43:25,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:43:25,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:43:25,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:43:25,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:43:25,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:43:25,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:43:25,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:43:25,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:43:25,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:43:25,596 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:43:25,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:43:25,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:43:25,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:43:25,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:43:25,597 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_448f57a5-12b5-42d8-ab1d-a64fba080ce4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c4953e406e391e2c67d1b20570a15d48dd5d15f1 [2020-11-28 07:43:25,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:43:25,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:43:25,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:43:25,893 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:43:25,894 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:43:25,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound50.c [2020-11-28 07:43:25,985 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/bin/utaipan/data/c404d5620/889638539ec3400a831c67668057d180/FLAGb6918f4a3 [2020-11-28 07:43:26,558 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:43:26,562 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound50.c [2020-11-28 07:43:26,575 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/bin/utaipan/data/c404d5620/889638539ec3400a831c67668057d180/FLAGb6918f4a3 [2020-11-28 07:43:26,906 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/bin/utaipan/data/c404d5620/889638539ec3400a831c67668057d180 [2020-11-28 07:43:26,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:43:26,913 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:43:26,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:26,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:43:26,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:43:26,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:26" (1/1) ... [2020-11-28 07:43:26,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@526410c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:26, skipping insertion in model container [2020-11-28 07:43:26,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:26" (1/1) ... [2020-11-28 07:43:26,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:43:26,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:43:27,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:27,200 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:43:27,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:27,238 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:43:27,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27 WrapperNode [2020-11-28 07:43:27,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:27,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:27,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:43:27,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:43:27,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:27,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:43:27,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:43:27,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:43:27,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... [2020-11-28 07:43:27,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:43:27,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:43:27,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:43:27,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:43:27,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/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 [2020-11-28 07:43:27,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:43:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:43:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:43:27,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:43:28,340 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:43:28,340 INFO L298 CfgBuilder]: Removed 38 assume(true) statements. [2020-11-28 07:43:28,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:28 BoogieIcfgContainer [2020-11-28 07:43:28,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:43:28,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:43:28,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:43:28,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:43:28,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:43:26" (1/3) ... [2020-11-28 07:43:28,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc00c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:28, skipping insertion in model container [2020-11-28 07:43:28,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:27" (2/3) ... [2020-11-28 07:43:28,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc00c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:28, skipping insertion in model container [2020-11-28 07:43:28,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:28" (3/3) ... [2020-11-28 07:43:28,356 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound50.c [2020-11-28 07:43:28,368 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:43:28,373 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-28 07:43:28,388 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-28 07:43:28,425 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:43:28,425 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:43:28,425 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:43:28,425 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:43:28,425 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:43:28,425 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:43:28,426 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:43:28,426 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:43:28,440 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-28 07:43:28,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:43:28,445 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:28,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:43:28,446 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:28,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:28,452 INFO L82 PathProgramCache]: Analyzing trace with hash 175224798, now seen corresponding path program 1 times [2020-11-28 07:43:28,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:28,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120070852] [2020-11-28 07:43:28,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:28,539 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:43:28,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1403567580] [2020-11-28 07:43:28,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/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 [2020-11-28 07:43:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:28,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:43:28,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:28,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:28,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:28,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120070852] [2020-11-28 07:43:28,696 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:43:28,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403567580] [2020-11-28 07:43:28,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:28,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:43:28,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920041224] [2020-11-28 07:43:28,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:43:28,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:28,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:43:28,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:43:28,718 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-28 07:43:28,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:28,748 INFO L93 Difference]: Finished difference Result 65 states and 87 transitions. [2020-11-28 07:43:28,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:43:28,749 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-28 07:43:28,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:28,760 INFO L225 Difference]: With dead ends: 65 [2020-11-28 07:43:28,760 INFO L226 Difference]: Without dead ends: 31 [2020-11-28 07:43:28,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:43:28,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-28 07:43:28,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-28 07:43:28,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 07:43:28,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-11-28 07:43:28,808 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 5 [2020-11-28 07:43:28,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:28,809 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-11-28 07:43:28,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:43:28,809 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-11-28 07:43:28,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:43:28,809 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:28,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:43:29,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-28 07:43:29,023 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:29,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:29,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1062670071, now seen corresponding path program 1 times [2020-11-28 07:43:29,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:29,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790527671] [2020-11-28 07:43:29,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:29,031 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:43:29,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195646456] [2020-11-28 07:43:29,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/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 [2020-11-28 07:43:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:29,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:43:29,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:29,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:29,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:29,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:29,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790527671] [2020-11-28 07:43:29,169 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:43:29,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195646456] [2020-11-28 07:43:29,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:29,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-28 07:43:29,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259283289] [2020-11-28 07:43:29,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:43:29,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:29,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:43:29,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:43:29,172 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 6 states. [2020-11-28 07:43:29,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:29,220 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-11-28 07:43:29,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:43:29,221 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-11-28 07:43:29,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:29,222 INFO L225 Difference]: With dead ends: 51 [2020-11-28 07:43:29,222 INFO L226 Difference]: Without dead ends: 43 [2020-11-28 07:43:29,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:43:29,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-28 07:43:29,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2020-11-28 07:43:29,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-28 07:43:29,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-11-28 07:43:29,229 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 6 [2020-11-28 07:43:29,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:29,229 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-11-28 07:43:29,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:43:29,230 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-11-28 07:43:29,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:43:29,230 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:29,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:29,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:29,459 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:29,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:29,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1417266903, now seen corresponding path program 1 times [2020-11-28 07:43:29,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:29,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702172822] [2020-11-28 07:43:29,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:29,465 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:43:29,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [680200858] [2020-11-28 07:43:29,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/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 [2020-11-28 07:43:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:29,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:43:29,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:29,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:29,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:29,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:29,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702172822] [2020-11-28 07:43:29,562 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:43:29,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680200858] [2020-11-28 07:43:29,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:29,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:43:29,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228885855] [2020-11-28 07:43:29,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:43:29,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:29,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:43:29,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:43:29,564 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 3 states. [2020-11-28 07:43:29,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:29,665 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-11-28 07:43:29,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:43:29,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-28 07:43:29,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:29,668 INFO L225 Difference]: With dead ends: 61 [2020-11-28 07:43:29,668 INFO L226 Difference]: Without dead ends: 53 [2020-11-28 07:43:29,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:43:29,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-28 07:43:29,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34. [2020-11-28 07:43:29,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-28 07:43:29,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-11-28 07:43:29,679 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 7 [2020-11-28 07:43:29,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:29,680 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-11-28 07:43:29,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:43:29,681 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-11-28 07:43:29,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:43:29,681 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:29,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:29,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:29,883 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:29,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:29,883 INFO L82 PathProgramCache]: Analyzing trace with hash -985752812, now seen corresponding path program 1 times [2020-11-28 07:43:29,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:29,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941844800] [2020-11-28 07:43:29,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:29,888 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:43:29,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913279883] [2020-11-28 07:43:29,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/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 [2020-11-28 07:43:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:29,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 07:43:29,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:30,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:30,059 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:43:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:30,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941844800] [2020-11-28 07:43:30,096 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:43:30,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913279883] [2020-11-28 07:43:30,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:30,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:43:30,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155164835] [2020-11-28 07:43:30,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:43:30,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:30,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:43:30,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:43:30,103 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 6 states. [2020-11-28 07:43:30,364 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-11-28 07:43:34,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:34,669 INFO L93 Difference]: Finished difference Result 106 states and 119 transitions. [2020-11-28 07:43:34,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 07:43:34,671 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-11-28 07:43:34,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:34,674 INFO L225 Difference]: With dead ends: 106 [2020-11-28 07:43:34,674 INFO L226 Difference]: Without dead ends: 104 [2020-11-28 07:43:34,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:43:34,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-28 07:43:34,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 47. [2020-11-28 07:43:34,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-28 07:43:34,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2020-11-28 07:43:34,683 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 8 [2020-11-28 07:43:34,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:34,684 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2020-11-28 07:43:34,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:43:34,684 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2020-11-28 07:43:34,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:43:34,684 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:34,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:34,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:34,886 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:34,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:34,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1879507767, now seen corresponding path program 1 times [2020-11-28 07:43:34,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:34,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607049822] [2020-11-28 07:43:34,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:34,893 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:43:34,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073037468] [2020-11-28 07:43:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/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 [2020-11-28 07:43:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:34,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:43:34,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:34,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:34,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:35,010 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:43:35,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:35,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607049822] [2020-11-28 07:43:35,026 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:43:35,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073037468] [2020-11-28 07:43:35,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:35,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:43:35,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894910793] [2020-11-28 07:43:35,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:43:35,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:35,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:43:35,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:43:35,028 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand 5 states. [2020-11-28 07:43:35,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:35,155 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2020-11-28 07:43:35,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:43:35,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 07:43:35,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:35,158 INFO L225 Difference]: With dead ends: 69 [2020-11-28 07:43:35,158 INFO L226 Difference]: Without dead ends: 67 [2020-11-28 07:43:35,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:43:35,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-28 07:43:35,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2020-11-28 07:43:35,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-28 07:43:35,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2020-11-28 07:43:35,170 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 10 [2020-11-28 07:43:35,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:35,171 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2020-11-28 07:43:35,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:43:35,171 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2020-11-28 07:43:35,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:43:35,171 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:35,172 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:35,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:35,395 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:35,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:35,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1860801587, now seen corresponding path program 1 times [2020-11-28 07:43:35,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:35,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510794477] [2020-11-28 07:43:35,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:35,400 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:43:35,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535646656] [2020-11-28 07:43:35,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/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 [2020-11-28 07:43:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:35,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:43:35,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:35,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:35,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:35,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:35,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510794477] [2020-11-28 07:43:35,548 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:43:35,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535646656] [2020-11-28 07:43:35,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:35,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-28 07:43:35,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175172428] [2020-11-28 07:43:35,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:43:35,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:35,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:43:35,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:43:35,550 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand 8 states. [2020-11-28 07:43:35,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:35,645 INFO L93 Difference]: Finished difference Result 126 states and 146 transitions. [2020-11-28 07:43:35,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 07:43:35,646 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-11-28 07:43:35,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:35,647 INFO L225 Difference]: With dead ends: 126 [2020-11-28 07:43:35,647 INFO L226 Difference]: Without dead ends: 93 [2020-11-28 07:43:35,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:43:35,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-28 07:43:35,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 75. [2020-11-28 07:43:35,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-28 07:43:35,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2020-11-28 07:43:35,669 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 12 [2020-11-28 07:43:35,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:35,669 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2020-11-28 07:43:35,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:43:35,669 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2020-11-28 07:43:35,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:43:35,670 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:35,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:35,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:35,871 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:35,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:35,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1974079462, now seen corresponding path program 1 times [2020-11-28 07:43:35,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:35,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235063380] [2020-11-28 07:43:35,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:35,876 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:43:35,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [255702003] [2020-11-28 07:43:35,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:35,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:43:35,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:35,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:35,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:36,003 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:43:36,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:36,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235063380] [2020-11-28 07:43:36,016 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:43:36,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255702003] [2020-11-28 07:43:36,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:36,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:43:36,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964969252] [2020-11-28 07:43:36,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:43:36,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:36,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:43:36,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:43:36,018 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand 5 states. [2020-11-28 07:43:36,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:36,158 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2020-11-28 07:43:36,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:43:36,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 07:43:36,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:36,160 INFO L225 Difference]: With dead ends: 82 [2020-11-28 07:43:36,160 INFO L226 Difference]: Without dead ends: 80 [2020-11-28 07:43:36,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:43:36,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-28 07:43:36,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2020-11-28 07:43:36,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-28 07:43:36,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2020-11-28 07:43:36,188 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 12 [2020-11-28 07:43:36,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:36,189 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2020-11-28 07:43:36,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:43:36,189 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2020-11-28 07:43:36,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:43:36,189 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:36,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:36,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:36,403 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:36,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:36,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1285370301, now seen corresponding path program 1 times [2020-11-28 07:43:36,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:36,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630595078] [2020-11-28 07:43:36,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:36,407 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:43:36,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470738799] [2020-11-28 07:43:36,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:36,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-28 07:43:36,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:36,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:36,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:36,614 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:43:36,633 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-28 07:43:36,633 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:43:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:36,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630595078] [2020-11-28 07:43:36,781 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:43:36,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470738799] [2020-11-28 07:43:36,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:36,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:43:36,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379442754] [2020-11-28 07:43:36,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:43:36,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:36,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:43:36,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:43:36,783 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand 7 states. [2020-11-28 07:43:36,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:36,805 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2020-11-28 07:43:36,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:43:36,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-11-28 07:43:36,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:36,805 INFO L225 Difference]: With dead ends: 75 [2020-11-28 07:43:36,805 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:43:36,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:43:36,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:43:36,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:43:36,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:43:36,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:43:36,807 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-11-28 07:43:36,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:36,807 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:43:36,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:43:36,807 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:43:36,807 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:43:37,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-11-28 07:43:37,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:43:37,040 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:43:37,040 INFO L274 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-11-28 07:43:37,041 INFO L270 CegarLoopResult]: At program point L11-1(lines 10 16) the Hoare annotation is: false [2020-11-28 07:43:37,041 INFO L274 CegarLoopResult]: For program point L11-2(lines 11 14) no Hoare annotation was computed. [2020-11-28 07:43:37,041 INFO L270 CegarLoopResult]: At program point L11-3(lines 10 16) the Hoare annotation is: false [2020-11-28 07:43:37,041 INFO L274 CegarLoopResult]: For program point L11-4(lines 11 14) no Hoare annotation was computed. [2020-11-28 07:43:37,041 INFO L270 CegarLoopResult]: At program point L11-5(lines 10 16) the Hoare annotation is: false [2020-11-28 07:43:37,041 INFO L274 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-11-28 07:43:37,041 INFO L270 CegarLoopResult]: At program point L11-7(lines 51 52) the Hoare annotation is: false [2020-11-28 07:43:37,041 INFO L274 CegarLoopResult]: For program point L11-8(lines 11 14) no Hoare annotation was computed. [2020-11-28 07:43:37,041 INFO L270 CegarLoopResult]: At program point L11-9(lines 10 16) the Hoare annotation is: false [2020-11-28 07:43:37,041 INFO L274 CegarLoopResult]: For program point L11-10(lines 11 14) no Hoare annotation was computed. [2020-11-28 07:43:37,041 INFO L277 CegarLoopResult]: At program point L11-11(lines 10 16) the Hoare annotation is: true [2020-11-28 07:43:37,041 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:43:37,041 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:43:37,042 INFO L274 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-11-28 07:43:37,042 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-11-28 07:43:37,042 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-11-28 07:43:37,042 INFO L274 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-11-28 07:43:37,042 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-11-28 07:43:37,042 INFO L274 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2020-11-28 07:43:37,042 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:43:37,042 INFO L274 CegarLoopResult]: For program point L46-1(lines 46 55) no Hoare annotation was computed. [2020-11-28 07:43:37,042 INFO L270 CegarLoopResult]: At program point L46-3(lines 46 55) the Hoare annotation is: false [2020-11-28 07:43:37,042 INFO L274 CegarLoopResult]: For program point L46-4(lines 46 55) no Hoare annotation was computed. [2020-11-28 07:43:37,042 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:43:37,042 INFO L274 CegarLoopResult]: For program point L40(lines 40 67) no Hoare annotation was computed. [2020-11-28 07:43:37,042 INFO L270 CegarLoopResult]: At program point L40-2(lines 7 67) the Hoare annotation is: false [2020-11-28 07:43:37,042 INFO L274 CegarLoopResult]: For program point L40-3(lines 40 67) no Hoare annotation was computed. [2020-11-28 07:43:37,042 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:43:37,043 INFO L274 CegarLoopResult]: For program point L41(lines 41 42) no Hoare annotation was computed. [2020-11-28 07:43:37,043 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:43:37,043 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:43:37,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:43:37 BoogieIcfgContainer [2020-11-28 07:43:37,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:43:37,053 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:43:37,053 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:43:37,053 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:43:37,053 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:28" (3/4) ... [2020-11-28 07:43:37,056 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:43:37,066 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2020-11-28 07:43:37,066 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 07:43:37,067 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 07:43:37,067 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:43:37,119 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_448f57a5-12b5-42d8-ab1d-a64fba080ce4/bin/utaipan/witness.graphml [2020-11-28 07:43:37,119 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:43:37,121 INFO L168 Benchmark]: Toolchain (without parser) took 10207.48 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 65.7 MB in the beginning and 58.3 MB in the end (delta: 7.4 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:37,121 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 75.5 MB. Free memory was 35.0 MB in the beginning and 35.0 MB in the end (delta: 36.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:37,122 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.54 ms. Allocated memory is still 96.5 MB. Free memory was 65.5 MB in the beginning and 73.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:37,122 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.84 ms. Allocated memory is still 96.5 MB. Free memory was 73.2 MB in the beginning and 71.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:37,123 INFO L168 Benchmark]: Boogie Preprocessor took 25.04 ms. Allocated memory is still 96.5 MB. Free memory was 71.7 MB in the beginning and 70.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:37,123 INFO L168 Benchmark]: RCFGBuilder took 1039.01 ms. Allocated memory is still 96.5 MB. Free memory was 70.1 MB in the beginning and 41.2 MB in the end (delta: 28.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:37,128 INFO L168 Benchmark]: TraceAbstraction took 8705.54 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 40.7 MB in the beginning and 62.4 MB in the end (delta: -21.7 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:37,129 INFO L168 Benchmark]: Witness Printer took 67.11 ms. Allocated memory is still 117.4 MB. Free memory was 62.4 MB in the beginning and 58.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:37,131 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 75.5 MB. Free memory was 35.0 MB in the beginning and 35.0 MB in the end (delta: 36.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 319.54 ms. Allocated memory is still 96.5 MB. Free memory was 65.5 MB in the beginning and 73.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.84 ms. Allocated memory is still 96.5 MB. Free memory was 73.2 MB in the beginning and 71.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.04 ms. Allocated memory is still 96.5 MB. Free memory was 71.7 MB in the beginning and 70.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1039.01 ms. Allocated memory is still 96.5 MB. Free memory was 70.1 MB in the beginning and 41.2 MB in the end (delta: 28.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8705.54 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 40.7 MB in the beginning and 62.4 MB in the end (delta: -21.7 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. * Witness Printer took 67.11 ms. Allocated memory is still 117.4 MB. Free memory was 62.4 MB in the beginning and 58.3 MB in the end (delta: 4.2 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: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.5s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 208 SDtfs, 219 SDslu, 436 SDs, 0 SdLazy, 195 SolverSat, 20 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 142 GetRequests, 101 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 116 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 8 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 9744 SizeOfPredicates, 38 NumberOfNonLiveVariables, 713 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 4/4 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...