./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/egcd.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench/egcd.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7eaf1ca2ea11910221bd028b73ef4e065d85e3bb .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 19:16:57,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 19:16:57,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 19:16:57,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 19:16:57,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 19:16:57,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 19:16:57,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 19:16:57,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 19:16:57,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 19:16:57,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 19:16:57,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 19:16:57,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 19:16:57,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 19:16:57,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 19:16:57,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 19:16:57,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 19:16:57,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 19:16:57,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 19:16:57,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 19:16:57,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 19:16:57,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 19:16:57,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 19:16:57,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 19:16:57,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 19:16:57,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 19:16:57,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 19:16:57,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 19:16:57,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 19:16:57,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 19:16:57,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 19:16:57,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 19:16:57,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 19:16:57,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 19:16:57,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 19:16:57,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 19:16:57,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 19:16:57,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 19:16:57,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 19:16:57,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 19:16:57,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 19:16:57,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 19:16:57,381 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 19:16:57,390 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 19:16:57,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 19:16:57,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 19:16:57,391 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 19:16:57,391 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 19:16:57,392 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 19:16:57,392 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 19:16:57,392 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 19:16:57,392 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 19:16:57,392 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 19:16:57,392 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 19:16:57,392 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 19:16:57,393 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 19:16:57,393 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 19:16:57,393 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 19:16:57,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 19:16:57,393 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 19:16:57,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 19:16:57,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 19:16:57,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 19:16:57,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 19:16:57,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 19:16:57,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 19:16:57,394 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 19:16:57,394 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 19:16:57,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 19:16:57,395 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 19:16:57,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 19:16:57,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 19:16:57,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 19:16:57,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 19:16:57,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:16:57,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 19:16:57,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 19:16:57,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 19:16:57,396 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 19:16:57,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 19:16:57,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 19:16:57,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 19:16:57,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 19:16:57,397 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b1716192-650f-4895-b996-1500f165c7d5/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(__VERIFIER_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 -> 7eaf1ca2ea11910221bd028b73ef4e065d85e3bb [2019-12-07 19:16:57,504 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 19:16:57,511 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 19:16:57,513 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 19:16:57,514 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 19:16:57,515 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 19:16:57,515 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/bin/utaipan/../../sv-benchmarks/c/nla-digbench/egcd.c [2019-12-07 19:16:57,553 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/bin/utaipan/data/c75334d66/8416b1578b8a4695963a60c286ed5215/FLAG264e1240e [2019-12-07 19:16:58,031 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 19:16:58,031 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/sv-benchmarks/c/nla-digbench/egcd.c [2019-12-07 19:16:58,036 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/bin/utaipan/data/c75334d66/8416b1578b8a4695963a60c286ed5215/FLAG264e1240e [2019-12-07 19:16:58,537 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/bin/utaipan/data/c75334d66/8416b1578b8a4695963a60c286ed5215 [2019-12-07 19:16:58,539 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 19:16:58,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 19:16:58,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 19:16:58,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 19:16:58,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 19:16:58,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:16:58" (1/1) ... [2019-12-07 19:16:58,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e9fdb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:16:58, skipping insertion in model container [2019-12-07 19:16:58,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:16:58" (1/1) ... [2019-12-07 19:16:58,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 19:16:58,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:16:58,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:16:58,672 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 19:16:58,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:16:58,731 INFO L208 MainTranslator]: Completed translation [2019-12-07 19:16:58,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:16:58 WrapperNode [2019-12-07 19:16:58,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 19:16:58,732 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 19:16:58,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 19:16:58,732 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 19:16:58,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:16:58" (1/1) ... [2019-12-07 19:16:58,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:16:58" (1/1) ... [2019-12-07 19:16:58,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 19:16:58,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 19:16:58,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 19:16:58,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 19:16:58,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:16:58" (1/1) ... [2019-12-07 19:16:58,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:16:58" (1/1) ... [2019-12-07 19:16:58,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:16:58" (1/1) ... [2019-12-07 19:16:58,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:16:58" (1/1) ... [2019-12-07 19:16:58,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:16:58" (1/1) ... [2019-12-07 19:16:58,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:16:58" (1/1) ... [2019-12-07 19:16:58,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:16:58" (1/1) ... [2019-12-07 19:16:58,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 19:16:58,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 19:16:58,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 19:16:58,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 19:16:58,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:16:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/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 [2019-12-07 19:16:58,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 19:16:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 19:16:58,978 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 19:16:58,979 INFO L287 CfgBuilder]: Removed 19 assume(true) statements. [2019-12-07 19:16:58,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:16:58 BoogieIcfgContainer [2019-12-07 19:16:58,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 19:16:58,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 19:16:58,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 19:16:58,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 19:16:58,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 07:16:58" (1/3) ... [2019-12-07 19:16:58,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d19730a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:16:58, skipping insertion in model container [2019-12-07 19:16:58,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:16:58" (2/3) ... [2019-12-07 19:16:58,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d19730a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:16:58, skipping insertion in model container [2019-12-07 19:16:58,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:16:58" (3/3) ... [2019-12-07 19:16:58,984 INFO L109 eAbstractionObserver]: Analyzing ICFG egcd.c [2019-12-07 19:16:58,990 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 19:16:58,994 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-12-07 19:16:59,001 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-12-07 19:16:59,016 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 19:16:59,017 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 19:16:59,017 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 19:16:59,017 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 19:16:59,017 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 19:16:59,017 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 19:16:59,017 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 19:16:59,017 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 19:16:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-12-07 19:16:59,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 19:16:59,033 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:16:59,034 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 19:16:59,034 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:16:59,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:16:59,038 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-12-07 19:16:59,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:16:59,044 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805714788] [2019-12-07 19:16:59,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:16:59,102 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 19:16:59,103 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651494518] [2019-12-07 19:16:59,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/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 [2019-12-07 19:16:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:16:59,130 INFO L264 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 19:16:59,133 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:16:59,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:16:59,166 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:16:59,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:16:59,195 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805714788] [2019-12-07 19:16:59,196 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 19:16:59,196 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651494518] [2019-12-07 19:16:59,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:16:59,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-12-07 19:16:59,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891905415] [2019-12-07 19:16:59,201 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 19:16:59,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:16:59,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 19:16:59,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 19:16:59,211 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 6 states. [2019-12-07 19:16:59,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:16:59,313 INFO L93 Difference]: Finished difference Result 90 states and 114 transitions. [2019-12-07 19:16:59,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 19:16:59,314 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-12-07 19:16:59,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:16:59,321 INFO L225 Difference]: With dead ends: 90 [2019-12-07 19:16:59,321 INFO L226 Difference]: Without dead ends: 55 [2019-12-07 19:16:59,323 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-12-07 19:16:59,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-12-07 19:16:59,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 43. [2019-12-07 19:16:59,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-12-07 19:16:59,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2019-12-07 19:16:59,349 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 4 [2019-12-07 19:16:59,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:16:59,350 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2019-12-07 19:16:59,350 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 19:16:59,350 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2019-12-07 19:16:59,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 19:16:59,350 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:16:59,350 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 19:16:59,551 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:16:59,552 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:16:59,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:16:59,553 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-12-07 19:16:59,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:16:59,554 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767501676] [2019-12-07 19:16:59,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:16:59,571 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 19:16:59,572 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846770462] [2019-12-07 19:16:59,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/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 [2019-12-07 19:16:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:16:59,614 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 19:16:59,615 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:16:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:16:59,636 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:16:59,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:16:59,652 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767501676] [2019-12-07 19:16:59,652 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 19:16:59,652 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846770462] [2019-12-07 19:16:59,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:16:59,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-12-07 19:16:59,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751250679] [2019-12-07 19:16:59,654 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 19:16:59,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:16:59,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 19:16:59,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 19:16:59,655 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 6 states. [2019-12-07 19:16:59,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:16:59,743 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2019-12-07 19:16:59,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 19:16:59,743 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-12-07 19:16:59,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:16:59,744 INFO L225 Difference]: With dead ends: 55 [2019-12-07 19:16:59,744 INFO L226 Difference]: Without dead ends: 53 [2019-12-07 19:16:59,745 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-12-07 19:16:59,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-12-07 19:16:59,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 43. [2019-12-07 19:16:59,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-12-07 19:16:59,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2019-12-07 19:16:59,753 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 6 [2019-12-07 19:16:59,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:16:59,753 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2019-12-07 19:16:59,753 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 19:16:59,753 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2019-12-07 19:16:59,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 19:16:59,753 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:16:59,753 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:16:59,954 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:16:59,955 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:16:59,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:16:59,956 INFO L82 PathProgramCache]: Analyzing trace with hash 756072562, now seen corresponding path program 1 times [2019-12-07 19:16:59,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:16:59,957 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001657108] [2019-12-07 19:16:59,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:16:59,970 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 19:16:59,971 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [232925668] [2019-12-07 19:16:59,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/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 [2019-12-07 19:17:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:17:00,030 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 19:17:00,032 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:17:00,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:17:00,073 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:17:00,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:17:00,106 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001657108] [2019-12-07 19:17:00,107 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 19:17:00,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232925668] [2019-12-07 19:17:00,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:17:00,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-12-07 19:17:00,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289492812] [2019-12-07 19:17:00,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 19:17:00,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:17:00,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 19:17:00,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 19:17:00,109 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2019-12-07 19:17:00,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:17:00,188 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2019-12-07 19:17:00,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 19:17:00,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-12-07 19:17:00,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:17:00,188 INFO L225 Difference]: With dead ends: 54 [2019-12-07 19:17:00,189 INFO L226 Difference]: Without dead ends: 46 [2019-12-07 19:17:00,189 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-12-07 19:17:00,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-12-07 19:17:00,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2019-12-07 19:17:00,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-12-07 19:17:00,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2019-12-07 19:17:00,194 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 8 [2019-12-07 19:17:00,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:17:00,194 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2019-12-07 19:17:00,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 19:17:00,194 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2019-12-07 19:17:00,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 19:17:00,194 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:17:00,194 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:17:00,395 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:17:00,396 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:17:00,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:17:00,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1354106950, now seen corresponding path program 1 times [2019-12-07 19:17:00,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:17:00,396 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937604219] [2019-12-07 19:17:00,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:17:00,403 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 19:17:00,403 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [557170848] [2019-12-07 19:17:00,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/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 [2019-12-07 19:17:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:17:00,426 INFO L264 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 19:17:00,427 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:17:00,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:17:00,437 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:17:00,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:17:00,445 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937604219] [2019-12-07 19:17:00,446 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 19:17:00,446 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557170848] [2019-12-07 19:17:00,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:17:00,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2019-12-07 19:17:00,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148394524] [2019-12-07 19:17:00,447 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 19:17:00,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:17:00,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 19:17:00,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 19:17:00,447 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 5 states. [2019-12-07 19:17:00,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:17:00,496 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2019-12-07 19:17:00,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 19:17:00,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 19:17:00,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:17:00,497 INFO L225 Difference]: With dead ends: 41 [2019-12-07 19:17:00,497 INFO L226 Difference]: Without dead ends: 39 [2019-12-07 19:17:00,497 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 19:17:00,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-12-07 19:17:00,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-12-07 19:17:00,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-12-07 19:17:00,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2019-12-07 19:17:00,501 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 11 [2019-12-07 19:17:00,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:17:00,501 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2019-12-07 19:17:00,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 19:17:00,501 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2019-12-07 19:17:00,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 19:17:00,502 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:17:00,502 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:17:00,702 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:17:00,703 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:17:00,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:17:00,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1355966903, now seen corresponding path program 1 times [2019-12-07 19:17:00,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:17:00,705 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437444787] [2019-12-07 19:17:00,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:17:00,716 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 19:17:00,716 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883677016] [2019-12-07 19:17:00,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/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 [2019-12-07 19:17:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:17:00,736 INFO L264 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-07 19:17:00,737 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:17:00,768 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 19:17:00,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:17:00,779 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:17:00,802 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 19:17:00,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 19:17:00,814 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437444787] [2019-12-07 19:17:00,814 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 19:17:00,814 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883677016] [2019-12-07 19:17:00,815 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [790501308] [2019-12-07 19:17:00,831 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-12-07 19:17:00,831 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 19:17:00,835 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 19:17:00,840 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 19:17:00,840 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 19:17:01,063 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 19:17:01,403 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 19:17:01,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 19:17:01,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2019-12-07 19:17:01,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689889982] [2019-12-07 19:17:01,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 19:17:01,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:17:01,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 19:17:01,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2019-12-07 19:17:01,404 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 7 states. [2019-12-07 19:17:01,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:17:01,542 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2019-12-07 19:17:01,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 19:17:01,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-12-07 19:17:01,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:17:01,544 INFO L225 Difference]: With dead ends: 64 [2019-12-07 19:17:01,544 INFO L226 Difference]: Without dead ends: 60 [2019-12-07 19:17:01,544 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2019-12-07 19:17:01,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-12-07 19:17:01,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 35. [2019-12-07 19:17:01,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-07 19:17:01,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2019-12-07 19:17:01,549 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 11 [2019-12-07 19:17:01,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:17:01,549 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2019-12-07 19:17:01,549 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 19:17:01,549 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2019-12-07 19:17:01,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 19:17:01,550 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:17:01,550 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:17:01,750 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:17:01,751 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:17:01,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:17:01,752 INFO L82 PathProgramCache]: Analyzing trace with hash -78154743, now seen corresponding path program 1 times [2019-12-07 19:17:01,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:17:01,753 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120318638] [2019-12-07 19:17:01,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:17:01,770 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 19:17:01,770 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462572422] [2019-12-07 19:17:01,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/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 [2019-12-07 19:17:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:17:01,831 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 15 conjunts are in the unsatisfiable core [2019-12-07 19:17:01,833 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:17:01,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:17:01,907 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:17:01,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:17:01,968 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120318638] [2019-12-07 19:17:01,968 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 19:17:01,969 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462572422] [2019-12-07 19:17:01,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:17:01,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-12-07 19:17:01,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357112922] [2019-12-07 19:17:01,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 19:17:01,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:17:01,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 19:17:01,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-07 19:17:01,972 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 8 states. [2019-12-07 19:17:02,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:17:02,061 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2019-12-07 19:17:02,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 19:17:02,062 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2019-12-07 19:17:02,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:17:02,062 INFO L225 Difference]: With dead ends: 37 [2019-12-07 19:17:02,062 INFO L226 Difference]: Without dead ends: 31 [2019-12-07 19:17:02,063 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2019-12-07 19:17:02,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-07 19:17:02,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-12-07 19:17:02,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 19:17:02,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2019-12-07 19:17:02,067 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 13 [2019-12-07 19:17:02,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:17:02,067 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2019-12-07 19:17:02,067 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 19:17:02,067 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2019-12-07 19:17:02,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 19:17:02,067 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:17:02,067 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:17:02,268 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:17:02,269 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:17:02,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:17:02,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1709258586, now seen corresponding path program 1 times [2019-12-07 19:17:02,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:17:02,270 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224612533] [2019-12-07 19:17:02,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:17:02,282 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 19:17:02,283 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701562735] [2019-12-07 19:17:02,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/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 [2019-12-07 19:17:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:17:02,328 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 20 conjunts are in the unsatisfiable core [2019-12-07 19:17:02,329 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:17:02,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:17:02,367 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:17:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:17:02,397 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224612533] [2019-12-07 19:17:02,397 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 19:17:02,398 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701562735] [2019-12-07 19:17:02,398 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1938715876] [2019-12-07 19:17:02,398 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-12-07 19:17:02,399 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 19:17:02,399 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 19:17:02,399 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 19:17:02,399 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 19:17:02,509 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 19:17:02,824 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 19:17:02,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 19:17:02,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-12-07 19:17:02,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351113635] [2019-12-07 19:17:02,824 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 19:17:02,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:17:02,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 19:17:02,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2019-12-07 19:17:02,825 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 8 states. [2019-12-07 19:17:03,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:17:03,199 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2019-12-07 19:17:03,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 19:17:03,199 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2019-12-07 19:17:03,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:17:03,200 INFO L225 Difference]: With dead ends: 75 [2019-12-07 19:17:03,200 INFO L226 Difference]: Without dead ends: 73 [2019-12-07 19:17:03,201 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2019-12-07 19:17:03,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-12-07 19:17:03,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 42. [2019-12-07 19:17:03,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-12-07 19:17:03,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2019-12-07 19:17:03,207 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 13 [2019-12-07 19:17:03,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:17:03,208 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2019-12-07 19:17:03,208 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 19:17:03,208 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2019-12-07 19:17:03,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 19:17:03,208 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:17:03,208 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-12-07 19:17:03,409 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:17:03,409 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:17:03,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:17:03,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1920149917, now seen corresponding path program 1 times [2019-12-07 19:17:03,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:17:03,410 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483063126] [2019-12-07 19:17:03,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:17:03,413 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 19:17:03,413 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1734558149] [2019-12-07 19:17:03,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/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 [2019-12-07 19:17:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:17:03,438 INFO L264 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 20 conjunts are in the unsatisfiable core [2019-12-07 19:17:03,439 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:17:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:17:03,478 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:17:03,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:17:03,512 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483063126] [2019-12-07 19:17:03,512 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 19:17:03,512 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734558149] [2019-12-07 19:17:03,512 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1761978149] [2019-12-07 19:17:03,513 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-12-07 19:17:03,513 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 19:17:03,515 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 19:17:03,515 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 19:17:03,515 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 19:17:03,609 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 19:17:03,906 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 19:17:03,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 19:17:03,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-12-07 19:17:03,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312776373] [2019-12-07 19:17:03,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 19:17:03,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:17:03,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 19:17:03,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2019-12-07 19:17:03,907 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 8 states. [2019-12-07 19:17:04,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:17:04,183 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2019-12-07 19:17:04,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 19:17:04,183 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-12-07 19:17:04,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:17:04,184 INFO L225 Difference]: With dead ends: 70 [2019-12-07 19:17:04,184 INFO L226 Difference]: Without dead ends: 58 [2019-12-07 19:17:04,184 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2019-12-07 19:17:04,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-12-07 19:17:04,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2019-12-07 19:17:04,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-12-07 19:17:04,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2019-12-07 19:17:04,190 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 15 [2019-12-07 19:17:04,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:17:04,190 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2019-12-07 19:17:04,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 19:17:04,190 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2019-12-07 19:17:04,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 19:17:04,191 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:17:04,191 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:17:04,391 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:17:04,392 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:17:04,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:17:04,393 INFO L82 PathProgramCache]: Analyzing trace with hash 963579326, now seen corresponding path program 1 times [2019-12-07 19:17:04,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:17:04,393 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019588670] [2019-12-07 19:17:04,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:17:04,404 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 19:17:04,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1844208927] [2019-12-07 19:17:04,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:17:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:17:04,448 INFO L264 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-07 19:17:04,449 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:17:04,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 19:17:04,482 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:17:04,508 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 19:17:04,508 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019588670] [2019-12-07 19:17:04,508 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 19:17:04,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844208927] [2019-12-07 19:17:04,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:17:04,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2019-12-07 19:17:04,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791534896] [2019-12-07 19:17:04,509 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 19:17:04,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:17:04,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 19:17:04,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-12-07 19:17:04,510 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 11 states. [2019-12-07 19:17:04,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:17:04,623 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2019-12-07 19:17:04,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 19:17:04,624 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2019-12-07 19:17:04,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:17:04,624 INFO L225 Difference]: With dead ends: 49 [2019-12-07 19:17:04,624 INFO L226 Difference]: Without dead ends: 43 [2019-12-07 19:17:04,624 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2019-12-07 19:17:04,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-12-07 19:17:04,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-12-07 19:17:04,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-12-07 19:17:04,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2019-12-07 19:17:04,628 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 20 [2019-12-07 19:17:04,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:17:04,629 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2019-12-07 19:17:04,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 19:17:04,629 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2019-12-07 19:17:04,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 19:17:04,629 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:17:04,629 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1] [2019-12-07 19:17:04,830 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:17:04,831 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:17:04,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:17:04,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1274555974, now seen corresponding path program 2 times [2019-12-07 19:17:04,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:17:04,833 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078504439] [2019-12-07 19:17:04,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:17:04,842 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 19:17:04,843 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732257497] [2019-12-07 19:17:04,843 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:17:04,922 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-12-07 19:17:04,922 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 19:17:04,924 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 22 conjunts are in the unsatisfiable core [2019-12-07 19:17:04,928 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:17:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-12-07 19:17:05,158 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:17:05,255 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-12-07 19:17:05,255 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078504439] [2019-12-07 19:17:05,255 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 19:17:05,255 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732257497] [2019-12-07 19:17:05,255 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [951530907] [2019-12-07 19:17:05,256 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-12-07 19:17:05,256 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 19:17:05,256 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 19:17:05,256 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 19:17:05,257 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 19:17:05,329 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 19:17:05,638 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 19:17:05,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 19:17:05,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2019-12-07 19:17:05,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689260250] [2019-12-07 19:17:05,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 19:17:05,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:17:05,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 19:17:05,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2019-12-07 19:17:05,639 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 13 states. [2019-12-07 19:17:05,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:17:05,849 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2019-12-07 19:17:05,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 19:17:05,849 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2019-12-07 19:17:05,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:17:05,850 INFO L225 Difference]: With dead ends: 43 [2019-12-07 19:17:05,850 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 19:17:05,850 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2019-12-07 19:17:05,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 19:17:05,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 19:17:05,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 19:17:05,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 19:17:05,851 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2019-12-07 19:17:05,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:17:05,851 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 19:17:05,851 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 19:17:05,851 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 19:17:05,851 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 19:17:06,052 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:17:06,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 19:17:06,230 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 31 [2019-12-07 19:17:08,324 WARN L192 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 90 DAG size of output: 27 [2019-12-07 19:17:08,533 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 33 [2019-12-07 19:17:10,577 WARN L192 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 80 DAG size of output: 25 [2019-12-07 19:17:11,024 WARN L192 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 26 [2019-12-07 19:17:11,026 INFO L242 CegarLoopResult]: At program point L6-5(lines 5 11) the Hoare annotation is: (and (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~p~0))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0) (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~q~0) 1)) (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~q~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~s~0)) ULTIMATE.start_main_~b~0) (<= 1 ULTIMATE.start_main_~y~0)) [2019-12-07 19:17:11,026 INFO L246 CegarLoopResult]: For program point L6-6(lines 6 9) no Hoare annotation was computed. [2019-12-07 19:17:11,026 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-12-07 19:17:11,026 INFO L242 CegarLoopResult]: At program point L6-8(lines 33 34) the Hoare annotation is: (and (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~p~0))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0) (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~q~0) 1)) (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~q~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~s~0)) ULTIMATE.start_main_~b~0) (<= 1 ULTIMATE.start_main_~y~0)) [2019-12-07 19:17:11,026 INFO L246 CegarLoopResult]: For program point L6-9(lines 6 9) no Hoare annotation was computed. [2019-12-07 19:17:11,026 INFO L242 CegarLoopResult]: At program point L6-11(lines 5 11) the Hoare annotation is: (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~p~0))) (= (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0) (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~q~0) 1)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~q~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~s~0)) ULTIMATE.start_main_~b~0) (<= 1 ULTIMATE.start_main_~y~0)) [2019-12-07 19:17:11,027 INFO L246 CegarLoopResult]: For program point L6-12(lines 6 9) no Hoare annotation was computed. [2019-12-07 19:17:11,027 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-12-07 19:17:11,027 INFO L242 CegarLoopResult]: At program point L6-14(lines 5 11) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse0 (= ULTIMATE.start_main_~p~0 1) (= ULTIMATE.start_main_~q~0 0) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 (= (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0) (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~q~0) 1)) (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~q~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~s~0)) ULTIMATE.start_main_~b~0)))) [2019-12-07 19:17:11,027 INFO L246 CegarLoopResult]: For program point L6-15(lines 6 9) no Hoare annotation was computed. [2019-12-07 19:17:11,027 INFO L242 CegarLoopResult]: At program point L6-17(lines 5 11) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~q~0 0) (<= 1 ULTIMATE.start_main_~y~0)) (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0) (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~q~0) 1)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~q~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~s~0)) ULTIMATE.start_main_~b~0))) [2019-12-07 19:17:11,027 INFO L246 CegarLoopResult]: For program point L6-18(lines 6 9) no Hoare annotation was computed. [2019-12-07 19:17:11,027 INFO L242 CegarLoopResult]: At program point L6-20(lines 5 11) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2019-12-07 19:17:11,027 INFO L246 CegarLoopResult]: For program point L7(lines 7 8) no Hoare annotation was computed. [2019-12-07 19:17:11,027 INFO L246 CegarLoopResult]: For program point L7-1(lines 7 8) no Hoare annotation was computed. [2019-12-07 19:17:11,027 INFO L246 CegarLoopResult]: For program point L7-2(lines 7 8) no Hoare annotation was computed. [2019-12-07 19:17:11,027 INFO L246 CegarLoopResult]: For program point L7-3(lines 7 8) no Hoare annotation was computed. [2019-12-07 19:17:11,027 INFO L246 CegarLoopResult]: For program point L7-4(lines 7 8) no Hoare annotation was computed. [2019-12-07 19:17:11,027 INFO L242 CegarLoopResult]: At program point L36-2(lines 28 45) the Hoare annotation is: (let ((.cse0 (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~q~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~s~0)) ULTIMATE.start_main_~b~0)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0))) (or (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~p~0 1) (= ULTIMATE.start_main_~q~0 0) .cse0 .cse1 (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (and (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~p~0))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0) (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~q~0) 1)) .cse0 .cse1))) [2019-12-07 19:17:11,027 INFO L246 CegarLoopResult]: For program point L7-5(lines 7 8) no Hoare annotation was computed. [2019-12-07 19:17:11,027 INFO L246 CegarLoopResult]: For program point L7-6(lines 7 8) no Hoare annotation was computed. [2019-12-07 19:17:11,027 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-12-07 19:17:11,028 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 19:17:11,028 INFO L246 CegarLoopResult]: For program point L28-2(lines 28 45) no Hoare annotation was computed. [2019-12-07 19:17:11,028 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-12-07 19:17:11,028 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 19:17:11,028 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-12-07 19:17:11,028 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-12-07 19:17:11,028 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-12-07 19:17:11,028 INFO L246 CegarLoopResult]: For program point L6(lines 6 9) no Hoare annotation was computed. [2019-12-07 19:17:11,028 INFO L242 CegarLoopResult]: At program point L6-2(lines 5 11) the Hoare annotation is: (and (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~p~0))) (= (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0) (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~q~0) 1)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~q~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~s~0)) ULTIMATE.start_main_~b~0) (<= 1 ULTIMATE.start_main_~y~0)) [2019-12-07 19:17:11,028 INFO L246 CegarLoopResult]: For program point L6-3(lines 6 9) no Hoare annotation was computed. [2019-12-07 19:17:11,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 07:17:11 BoogieIcfgContainer [2019-12-07 19:17:11,043 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 19:17:11,044 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 19:17:11,044 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 19:17:11,044 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 19:17:11,044 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:16:58" (3/4) ... [2019-12-07 19:17:11,046 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 19:17:11,053 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2019-12-07 19:17:11,053 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 19:17:11,053 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 19:17:11,092 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b1716192-650f-4895-b996-1500f165c7d5/bin/utaipan/witness.graphml [2019-12-07 19:17:11,092 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 19:17:11,093 INFO L168 Benchmark]: Toolchain (without parser) took 12552.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 940.7 MB in the beginning and 891.2 MB in the end (delta: 49.5 MB). Peak memory consumption was 196.8 MB. Max. memory is 11.5 GB. [2019-12-07 19:17:11,093 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 964.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:17:11,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 190.26 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -158.0 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-12-07 19:17:11,094 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 19:17:11,094 INFO L168 Benchmark]: Boogie Preprocessor took 14.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. [2019-12-07 19:17:11,094 INFO L168 Benchmark]: RCFGBuilder took 208.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2019-12-07 19:17:11,095 INFO L168 Benchmark]: TraceAbstraction took 12063.28 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 48.8 MB). Free memory was 1.1 GB in the beginning and 898.2 MB in the end (delta: 167.3 MB). Peak memory consumption was 216.0 MB. Max. memory is 11.5 GB. [2019-12-07 19:17:11,095 INFO L168 Benchmark]: Witness Printer took 48.60 ms. Allocated memory is still 1.2 GB. Free memory was 898.2 MB in the beginning and 891.2 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-12-07 19:17:11,097 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 964.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 190.26 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -158.0 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 208.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 12063.28 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 48.8 MB). Free memory was 1.1 GB in the beginning and 898.2 MB in the end (delta: 167.3 MB). Peak memory consumption was 216.0 MB. Max. memory is 11.5 GB. * Witness Printer took 48.60 ms. Allocated memory is still 1.2 GB. Free memory was 898.2 MB in the beginning and 891.2 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: ((((s == 1 && b == y) && !(0 == cond)) && q == 0) && 1 <= y) || (((b == a && p * s == r * q + 1) && 1 == cond) && x * q + y * s == b) - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: ((((b == a && b == y * r + x * p) && p * s == r * q + 1) && 1 == cond) && x * q + y * s == b) && 1 <= y - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: (((a == y * r + x * p && 1 == cond) && p * s == r * q + 1) && x * q + y * s == b) && 1 <= y - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((((b == y && p == 1) && q == 0) && x * q + y * s == b) && 1 <= y) && r == 0) && a == x) || ((((a == y * r + x * p && 1 == cond) && p * s == r * q + 1) && x * q + y * s == b) && 1 <= y) - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: (((((((s == 1 && b == y) && !(0 == cond)) && p == 1) && q == 0) && 1 <= y) && r == 0) && a == x) || (((b == a && !(0 == cond)) && p * s == r * q + 1) && x * q + y * s == b) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (((a == y * r + x * p && 1 == cond) && p * s == r * q + 1) && x * q + y * s == b) && 1 <= y - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: (((a == y * r + x * p && p * s == r * q + 1) && 1 == cond) && x * q + y * s == b) && 1 <= y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 7 error locations. Result: SAFE, OverallTime: 7.0s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.9s, HoareTripleCheckerStatistics: 172 SDtfs, 328 SDslu, 351 SDs, 0 SdLazy, 547 SolverSat, 293 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 344 GetRequests, 209 SyntacticMatches, 5 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=8, 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, 10 MinimizatonAttempts, 92 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 34 NumberOfFragments, 302 HoareAnnotationTreeSize, 8 FomulaSimplifications, 1988 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 3516 FormulaSimplificationTreeSizeReductionInter, 4.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 128 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 236 ConstructedInterpolants, 6 QuantifiedInterpolants, 35220 SizeOfPredicates, 102 NumberOfNonLiveVariables, 491 ConjunctsInSsa, 154 ConjunctsInUnsatCore, 20 InterpolantComputations, 12 PerfectInterpolantSequences, 77/104 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...