./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test22-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5ced1dc8-1923-4284-9419-5dac2593fd3f/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5ced1dc8-1923-4284-9419-5dac2593fd3f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5ced1dc8-1923-4284-9419-5dac2593fd3f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5ced1dc8-1923-4284-9419-5dac2593fd3f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test22-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5ced1dc8-1923-4284-9419-5dac2593fd3f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5ced1dc8-1923-4284-9419-5dac2593fd3f/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 efd11941ceab8dc56d9aa56f1950f714738654ba ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:18:36,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:18:36,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:18:36,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:18:36,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:18:36,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:18:36,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:18:36,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:18:36,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:18:36,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:18:36,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:18:36,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:18:36,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:18:36,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:18:36,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:18:36,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:18:36,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:18:36,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:18:36,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:18:36,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:18:36,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:18:36,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:18:36,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:18:36,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:18:36,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:18:36,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:18:36,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:18:36,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:18:36,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:18:36,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:18:36,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:18:36,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:18:36,341 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:18:36,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:18:36,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:18:36,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:18:36,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:18:36,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:18:36,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:18:36,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:18:36,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:18:36,346 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5ced1dc8-1923-4284-9419-5dac2593fd3f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:18:36,377 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:18:36,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:18:36,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:18:36,388 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:18:36,388 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:18:36,388 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:18:36,389 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:18:36,389 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:18:36,389 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:18:36,389 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:18:36,389 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:18:36,390 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:18:36,390 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:18:36,390 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:18:36,390 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:18:36,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:18:36,391 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:18:36,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:18:36,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:18:36,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:18:36,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:18:36,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:18:36,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:18:36,393 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:18:36,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:18:36,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:18:36,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:18:36,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:18:36,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:18:36,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:18:36,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:18:36,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:18:36,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:18:36,398 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:18:36,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:18:36,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:18:36,398 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:18:36,398 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_5ced1dc8-1923-4284-9419-5dac2593fd3f/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 -> efd11941ceab8dc56d9aa56f1950f714738654ba [2019-11-26 02:18:36,526 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:18:36,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:18:36,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:18:36,547 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:18:36,548 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:18:36,549 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5ced1dc8-1923-4284-9419-5dac2593fd3f/bin/utaipan/../../sv-benchmarks/c/ldv-regression/test22-1.c [2019-11-26 02:18:36,597 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ced1dc8-1923-4284-9419-5dac2593fd3f/bin/utaipan/data/e1a644a0c/bf3c3b94d6e34f77a899f3512bdb711d/FLAGee8f3bd00 [2019-11-26 02:18:36,923 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:18:36,924 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5ced1dc8-1923-4284-9419-5dac2593fd3f/sv-benchmarks/c/ldv-regression/test22-1.c [2019-11-26 02:18:36,929 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ced1dc8-1923-4284-9419-5dac2593fd3f/bin/utaipan/data/e1a644a0c/bf3c3b94d6e34f77a899f3512bdb711d/FLAGee8f3bd00 [2019-11-26 02:18:37,333 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5ced1dc8-1923-4284-9419-5dac2593fd3f/bin/utaipan/data/e1a644a0c/bf3c3b94d6e34f77a899f3512bdb711d [2019-11-26 02:18:37,337 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:18:37,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:18:37,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:18:37,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:18:37,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:18:37,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:18:37" (1/1) ... [2019-11-26 02:18:37,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35c2b584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:37, skipping insertion in model container [2019-11-26 02:18:37,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:18:37" (1/1) ... [2019-11-26 02:18:37,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:18:37,387 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:18:37,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:18:37,609 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:18:37,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:18:37,716 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:18:37,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:37 WrapperNode [2019-11-26 02:18:37,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:18:37,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:18:37,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:18:37,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:18:37,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:37" (1/1) ... [2019-11-26 02:18:37,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:37" (1/1) ... [2019-11-26 02:18:37,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:18:37,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:18:37,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:18:37,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:18:37,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:37" (1/1) ... [2019-11-26 02:18:37,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:37" (1/1) ... [2019-11-26 02:18:37,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:37" (1/1) ... [2019-11-26 02:18:37,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:37" (1/1) ... [2019-11-26 02:18:37,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:37" (1/1) ... [2019-11-26 02:18:37,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:37" (1/1) ... [2019-11-26 02:18:37,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:37" (1/1) ... [2019-11-26 02:18:37,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:18:37,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:18:37,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:18:37,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:18:37,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ced1dc8-1923-4284-9419-5dac2593fd3f/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 [2019-11-26 02:18:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-26 02:18:37,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:18:37,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:18:37,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:18:37,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:18:37,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:18:38,373 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:18:38,374 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-26 02:18:38,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:18:38 BoogieIcfgContainer [2019-11-26 02:18:38,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:18:38,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:18:38,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:18:38,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:18:38,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:18:37" (1/3) ... [2019-11-26 02:18:38,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1afb22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:18:38, skipping insertion in model container [2019-11-26 02:18:38,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:37" (2/3) ... [2019-11-26 02:18:38,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1afb22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:18:38, skipping insertion in model container [2019-11-26 02:18:38,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:18:38" (3/3) ... [2019-11-26 02:18:38,382 INFO L109 eAbstractionObserver]: Analyzing ICFG test22-1.c [2019-11-26 02:18:38,391 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:18:38,397 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:18:38,406 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:18:38,426 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:18:38,427 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:18:38,427 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:18:38,427 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:18:38,427 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:18:38,427 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:18:38,428 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:18:38,428 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:18:38,440 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-26 02:18:38,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:18:38,445 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:18:38,445 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:18:38,446 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:18:38,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:18:38,450 INFO L82 PathProgramCache]: Analyzing trace with hash -820906194, now seen corresponding path program 1 times [2019-11-26 02:18:38,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:18:38,456 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559947627] [2019-11-26 02:18:38,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:18:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:18:38,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:18:38,596 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559947627] [2019-11-26 02:18:38,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:18:38,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:18:38,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152639564] [2019-11-26 02:18:38,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:18:38,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:18:38,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:18:38,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:18:38,615 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-11-26 02:18:38,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:18:38,626 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-11-26 02:18:38,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:18:38,627 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-26 02:18:38,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:18:38,633 INFO L225 Difference]: With dead ends: 18 [2019-11-26 02:18:38,633 INFO L226 Difference]: Without dead ends: 8 [2019-11-26 02:18:38,636 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:18:38,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-26 02:18:38,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-26 02:18:38,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-26 02:18:38,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-26 02:18:38,663 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-26 02:18:38,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:18:38,664 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-26 02:18:38,664 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:18:38,664 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-26 02:18:38,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:18:38,664 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:18:38,664 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:18:38,665 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:18:38,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:18:38,665 INFO L82 PathProgramCache]: Analyzing trace with hash 314486783, now seen corresponding path program 1 times [2019-11-26 02:18:38,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:18:38,666 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670106768] [2019-11-26 02:18:38,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:18:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:18:38,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:18:38,807 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670106768] [2019-11-26 02:18:38,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:18:38,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:18:38,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750145859] [2019-11-26 02:18:38,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:18:38,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:18:38,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:18:38,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:18:38,810 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2019-11-26 02:18:38,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:18:38,897 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-11-26 02:18:38,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:18:38,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-26 02:18:38,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:18:38,900 INFO L225 Difference]: With dead ends: 14 [2019-11-26 02:18:38,900 INFO L226 Difference]: Without dead ends: 10 [2019-11-26 02:18:38,901 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:18:38,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-26 02:18:38,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-26 02:18:38,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-26 02:18:38,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-11-26 02:18:38,904 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2019-11-26 02:18:38,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:18:38,904 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-11-26 02:18:38,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:18:38,905 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-11-26 02:18:38,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:18:38,905 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:18:38,905 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:18:38,905 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:18:38,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:18:38,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1604244858, now seen corresponding path program 1 times [2019-11-26 02:18:38,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:18:38,906 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026788345] [2019-11-26 02:18:38,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:18:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:18:39,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:18:39,145 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026788345] [2019-11-26 02:18:39,145 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612107536] [2019-11-26 02:18:39,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ced1dc8-1923-4284-9419-5dac2593fd3f/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 [2019-11-26 02:18:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:18:39,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-26 02:18:39,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:18:39,244 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:18:39,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:18:39,419 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:18:39,454 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2019-11-26 02:18:39,455 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:18:39,460 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2019-11-26 02:18:39,461 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-26 02:18:39,481 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:18:39,481 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:18:39,482 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:57, output treesize:9 [2019-11-26 02:18:39,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:18:39,503 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:18:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:18:39,577 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [74135745] [2019-11-26 02:18:39,601 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-26 02:18:39,601 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:18:39,609 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:18:39,619 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:18:39,620 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:18:39,833 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:39,867 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:39,898 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:39,941 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:39,988 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,019 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,054 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,091 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,129 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,158 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,253 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,287 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,389 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,416 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,440 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,463 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,492 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,605 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,669 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,693 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,720 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,746 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,805 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,825 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,880 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,899 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,924 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,976 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:40,998 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:41,019 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:41,040 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:41,058 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:41,080 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:41,102 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:41,189 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:41,208 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:41,230 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:41,250 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:41,269 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:41,288 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:41,306 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:41,374 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:41,389 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:41,406 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:41,609 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-11-26 02:18:42,565 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2019-11-26 02:18:43,925 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-11-26 02:18:44,096 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:18:44,370 WARN L192 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2019-11-26 02:18:45,009 WARN L192 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-26 02:18:45,011 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:18:45,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:18:45,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2019-11-26 02:18:45,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887888119] [2019-11-26 02:18:45,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-26 02:18:45,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:18:45,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-26 02:18:45,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-11-26 02:18:45,014 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 15 states. [2019-11-26 02:18:45,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:18:45,436 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2019-11-26 02:18:45,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-26 02:18:45,441 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 9 [2019-11-26 02:18:45,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:18:45,442 INFO L225 Difference]: With dead ends: 20 [2019-11-26 02:18:45,442 INFO L226 Difference]: Without dead ends: 16 [2019-11-26 02:18:45,443 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2019-11-26 02:18:45,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-26 02:18:45,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-26 02:18:45,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-26 02:18:45,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-26 02:18:45,446 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2019-11-26 02:18:45,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:18:45,446 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-26 02:18:45,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-26 02:18:45,447 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-26 02:18:45,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-26 02:18:45,447 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:18:45,447 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2019-11-26 02:18:45,649 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:18:45,649 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:18:45,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:18:45,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1205512853, now seen corresponding path program 2 times [2019-11-26 02:18:45,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:18:45,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693541134] [2019-11-26 02:18:45,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:18:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:18:45,870 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:18:45,871 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693541134] [2019-11-26 02:18:45,871 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214937312] [2019-11-26 02:18:45,871 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ced1dc8-1923-4284-9419-5dac2593fd3f/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 [2019-11-26 02:18:45,928 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-26 02:18:45,928 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:18:45,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 36 conjunts are in the unsatisfiable core [2019-11-26 02:18:45,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:18:46,147 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-26 02:18:46,147 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:18:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-26 02:18:46,321 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1595149395] [2019-11-26 02:18:46,322 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-26 02:18:46,322 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:18:46,322 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:18:46,322 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:18:46,323 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:18:46,421 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:46,450 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:46,482 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:46,504 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:46,529 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:46,560 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:46,590 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:46,658 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:46,685 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:46,733 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:46,761 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:46,776 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:46,795 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:46,849 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:46,900 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:46,922 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:46,941 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:46,969 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,001 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,020 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,040 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,059 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,101 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,139 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,153 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,168 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,184 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,209 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,231 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,252 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,312 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,406 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,422 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,437 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,449 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,486 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,497 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,508 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,544 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,556 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,600 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,615 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,627 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:47,638 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:18:49,683 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:18:49,899 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2019-11-26 02:18:50,423 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-26 02:18:50,423 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:18:50,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:18:50,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2019-11-26 02:18:50,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843287138] [2019-11-26 02:18:50,425 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-26 02:18:50,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:18:50,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-26 02:18:50,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2019-11-26 02:18:50,425 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 24 states. [2019-11-26 02:18:51,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:18:51,223 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-11-26 02:18:51,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-26 02:18:51,223 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 15 [2019-11-26 02:18:51,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:18:51,224 INFO L225 Difference]: With dead ends: 20 [2019-11-26 02:18:51,224 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:18:51,225 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=338, Invalid=1554, Unknown=0, NotChecked=0, Total=1892 [2019-11-26 02:18:51,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:18:51,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:18:51,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:18:51,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:18:51,226 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-11-26 02:18:51,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:18:51,226 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:18:51,226 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-26 02:18:51,226 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:18:51,226 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:18:51,426 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:18:51,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:18:51,541 INFO L444 ceAbstractionStarter]: For program point L35-2(lines 35 44) no Hoare annotation was computed. [2019-11-26 02:18:51,541 INFO L444 ceAbstractionStarter]: For program point L35-4(lines 35 44) no Hoare annotation was computed. [2019-11-26 02:18:51,541 INFO L447 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-26 02:18:51,541 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2019-11-26 02:18:51,542 INFO L447 ceAbstractionStarter]: At program point L49(lines 30 50) the Hoare annotation is: true [2019-11-26 02:18:51,542 INFO L444 ceAbstractionStarter]: For program point L41(lines 41 43) no Hoare annotation was computed. [2019-11-26 02:18:51,542 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:18:51,542 INFO L440 ceAbstractionStarter]: At program point L42(lines 31 50) the Hoare annotation is: false [2019-11-26 02:18:51,542 INFO L444 ceAbstractionStarter]: For program point L38-1(lines 38 40) no Hoare annotation was computed. [2019-11-26 02:18:51,542 INFO L440 ceAbstractionStarter]: At program point L38-3(lines 38 40) the Hoare annotation is: (and (not (= 0 ULTIMATE.start_main_~pa~0.base)) (= ULTIMATE.start_main_~pa~0.offset 0) (= 0 ULTIMATE.start_main_~pd2~0.offset) (< 0 (select (select |#memory_int| ULTIMATE.start_main_~pd2~0.base) ULTIMATE.start_main_~pd2~0.offset)) (<= ULTIMATE.start_main_~i~0 (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset)) (= ULTIMATE.start_main_~pd2~0.base ULTIMATE.start_main_~pa~0.base) (or (and (= ULTIMATE.start_main_~pd1~0.base ULTIMATE.start_main_~pd2~0.base) (= ULTIMATE.start_main_~pd2~0.offset ULTIMATE.start_main_~pd1~0.offset)) (not |ULTIMATE.start_main_#t~short12|))) [2019-11-26 02:18:51,543 INFO L440 ceAbstractionStarter]: At program point L38-4(lines 38 40) the Hoare annotation is: (let ((.cse0 (select |#memory_int| ULTIMATE.start_main_~pd2~0.base))) (and (<= (select .cse0 0) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~pa~0.offset 0) (= 0 ULTIMATE.start_main_~pd2~0.offset) (< 0 (select .cse0 ULTIMATE.start_main_~pd2~0.offset)) (<= ULTIMATE.start_main_~i~0 (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset)) (not (= 0 ULTIMATE.start_main_~pd2~0.base)) (= ULTIMATE.start_main_~pd2~0.base ULTIMATE.start_main_~pa~0.base) (or (and (= ULTIMATE.start_main_~pd1~0.base ULTIMATE.start_main_~pd2~0.base) (= ULTIMATE.start_main_~pd2~0.offset ULTIMATE.start_main_~pd1~0.offset)) (not |ULTIMATE.start_main_#t~short12|)))) [2019-11-26 02:18:51,551 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:18:51,551 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:18:51,552 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:18:51,556 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:18:51,556 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:18:51,556 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:18:51,558 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:18:51,558 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:18:51,559 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:18:51,559 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:18:51,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:18:51 BoogieIcfgContainer [2019-11-26 02:18:51,561 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:18:51,562 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:18:51,562 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:18:51,562 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:18:51,563 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:18:38" (3/4) ... [2019-11-26 02:18:51,566 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:18:51,580 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2019-11-26 02:18:51,581 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-26 02:18:51,582 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:18:51,628 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5ced1dc8-1923-4284-9419-5dac2593fd3f/bin/utaipan/witness.graphml [2019-11-26 02:18:51,628 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:18:51,629 INFO L168 Benchmark]: Toolchain (without parser) took 14291.26 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 284.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -111.3 MB). Peak memory consumption was 172.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:18:51,630 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:18:51,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -193.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:18:51,630 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:18:51,630 INFO L168 Benchmark]: Boogie Preprocessor took 22.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:18:51,631 INFO L168 Benchmark]: RCFGBuilder took 585.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:18:51,631 INFO L168 Benchmark]: TraceAbstraction took 13185.32 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 141.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.4 MB). Peak memory consumption was 169.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:18:51,631 INFO L168 Benchmark]: Witness Printer took 66.73 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:18:51,638 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 376.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -193.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 585.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 13185.32 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 141.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.4 MB). Peak memory consumption was 169.4 MB. Max. memory is 11.5 GB. * Witness Printer took 66.73 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant [2019-11-26 02:18:51,648 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:18:51,648 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:18:51,648 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:18:51,649 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:18:51,649 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:18:51,650 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((((unknown-#memory_int-unknown[pd2][0] <= i && pa == 0) && 0 == pd2) && 0 < unknown-#memory_int-unknown[pd2][pd2]) && i <= unknown-#memory_int-unknown[pa][pa]) && !(0 == pd2)) && pd2 == pa) && ((pd1 == pd2 && pd2 == pd1) || !aux-pd1 != 0 && pd1 == pd2 && (*pd2).a > 0-aux) - InvariantResult [Line: 38]: Loop Invariant [2019-11-26 02:18:51,651 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:18:51,651 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:18:51,652 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-26 02:18:51,652 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((((!(0 == pa) && pa == 0) && 0 == pd2) && 0 < unknown-#memory_int-unknown[pd2][pd2]) && i <= unknown-#memory_int-unknown[pa][pa]) && pd2 == pa) && ((pd1 == pd2 && pd2 == pd1) || !aux-pd1 != 0 && pd1 == pd2 && (*pd2).a > 0-aux) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 13.1s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 21 SDtfs, 55 SDslu, 19 SDs, 0 SdLazy, 140 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=3, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 12 NumberOfFragments, 86 HoareAnnotationTreeSize, 5 FomulaSimplifications, 54 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 240 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 61 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 12681 SizeOfPredicates, 30 NumberOfNonLiveVariables, 175 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 25/66 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...