./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe024_tso.opt.i --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_5da9f744-d7dd-40d5-842d-3c0723d5d0ee/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5da9f744-d7dd-40d5-842d-3c0723d5d0ee/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5da9f744-d7dd-40d5-842d-3c0723d5d0ee/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5da9f744-d7dd-40d5-842d-3c0723d5d0ee/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe024_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5da9f744-d7dd-40d5-842d-3c0723d5d0ee/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5da9f744-d7dd-40d5-842d-3c0723d5d0ee/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 e3f3be26869921b1b9215a273e1d6d4f00b9873a ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:57:04,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:57:04,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:57:04,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:57:04,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:57:04,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:57:04,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:57:04,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:57:04,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:57:04,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:57:04,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:57:04,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:57:04,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:57:04,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:57:04,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:57:04,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:57:04,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:57:04,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:57:04,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:57:04,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:57:04,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:57:04,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:57:04,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:57:04,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:57:04,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:57:04,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:57:04,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:57:04,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:57:04,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:57:04,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:57:04,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:57:04,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:57:04,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:57:04,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:57:04,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:57:04,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:57:04,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:57:04,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:57:04,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:57:04,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:57:04,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:57:04,377 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5da9f744-d7dd-40d5-842d-3c0723d5d0ee/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 20:57:04,387 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:57:04,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:57:04,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:57:04,388 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:57:04,388 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:57:04,388 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:57:04,388 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 20:57:04,388 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:57:04,388 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:57:04,389 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 20:57:04,389 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 20:57:04,389 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:57:04,389 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 20:57:04,389 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 20:57:04,389 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 20:57:04,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:57:04,390 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:57:04,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:57:04,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:57:04,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:57:04,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 20:57:04,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:57:04,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 20:57:04,391 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:57:04,391 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:57:04,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 20:57:04,391 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:57:04,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 20:57:04,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:57:04,392 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:57:04,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:57:04,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:57:04,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:57:04,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:57:04,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 20:57:04,392 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 20:57:04,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 20:57:04,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 20:57:04,393 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:57:04,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:57:04,393 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_5da9f744-d7dd-40d5-842d-3c0723d5d0ee/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 -> e3f3be26869921b1b9215a273e1d6d4f00b9873a [2019-12-07 20:57:04,492 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:57:04,502 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:57:04,505 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:57:04,506 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:57:04,506 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:57:04,507 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5da9f744-d7dd-40d5-842d-3c0723d5d0ee/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe024_tso.opt.i [2019-12-07 20:57:04,549 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5da9f744-d7dd-40d5-842d-3c0723d5d0ee/bin/utaipan/data/f7af6f31f/7ac016d7a1184b47918df620a499b82e/FLAGc31c1049a [2019-12-07 20:57:04,981 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:57:04,981 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5da9f744-d7dd-40d5-842d-3c0723d5d0ee/sv-benchmarks/c/pthread-wmm/safe024_tso.opt.i [2019-12-07 20:57:04,992 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5da9f744-d7dd-40d5-842d-3c0723d5d0ee/bin/utaipan/data/f7af6f31f/7ac016d7a1184b47918df620a499b82e/FLAGc31c1049a [2019-12-07 20:57:05,001 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5da9f744-d7dd-40d5-842d-3c0723d5d0ee/bin/utaipan/data/f7af6f31f/7ac016d7a1184b47918df620a499b82e [2019-12-07 20:57:05,003 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:57:05,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:57:05,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:57:05,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:57:05,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:57:05,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:57:05" (1/1) ... [2019-12-07 20:57:05,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c131985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:05, skipping insertion in model container [2019-12-07 20:57:05,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:57:05" (1/1) ... [2019-12-07 20:57:05,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:57:05,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:57:05,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:57:05,303 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:57:05,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:57:05,405 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:57:05,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:05 WrapperNode [2019-12-07 20:57:05,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:57:05,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:57:05,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:57:05,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:57:05,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:05" (1/1) ... [2019-12-07 20:57:05,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:05" (1/1) ... [2019-12-07 20:57:05,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:57:05,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:57:05,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:57:05,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:57:05,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:05" (1/1) ... [2019-12-07 20:57:05,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:05" (1/1) ... [2019-12-07 20:57:05,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:05" (1/1) ... [2019-12-07 20:57:05,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:05" (1/1) ... [2019-12-07 20:57:05,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:05" (1/1) ... [2019-12-07 20:57:05,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:05" (1/1) ... [2019-12-07 20:57:05,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:05" (1/1) ... [2019-12-07 20:57:05,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:57:05,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:57:05,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:57:05,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:57:05,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5da9f744-d7dd-40d5-842d-3c0723d5d0ee/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 20:57:05,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 20:57:05,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 20:57:05,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 20:57:05,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 20:57:05,525 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 20:57:05,526 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 20:57:05,526 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 20:57:05,526 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 20:57:05,526 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 20:57:05,526 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 20:57:05,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 20:57:05,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:57:05,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:57:05,528 WARN L205 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-07 20:57:05,725 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:57:05,725 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 20:57:05,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:57:05 BoogieIcfgContainer [2019-12-07 20:57:05,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:57:05,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:57:05,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:57:05,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:57:05,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:57:05" (1/3) ... [2019-12-07 20:57:05,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c382a9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:57:05, skipping insertion in model container [2019-12-07 20:57:05,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:05" (2/3) ... [2019-12-07 20:57:05,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c382a9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:57:05, skipping insertion in model container [2019-12-07 20:57:05,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:57:05" (3/3) ... [2019-12-07 20:57:05,730 INFO L109 eAbstractionObserver]: Analyzing ICFG safe024_tso.opt.i [2019-12-07 20:57:05,736 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 20:57:05,736 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:57:05,740 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 20:57:05,741 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 20:57:05,757 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:05,757 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:05,757 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:05,758 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:05,758 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:05,758 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:05,758 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:05,758 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:05,758 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:05,759 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:05,759 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:05,759 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:05,759 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:05,759 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:05,759 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:05,759 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:05,760 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:05,760 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:05,774 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 20:57:05,786 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:57:05,786 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 20:57:05,786 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:57:05,786 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:57:05,786 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:57:05,786 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:57:05,786 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:57:05,787 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:57:05,795 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions [2019-12-07 20:57:05,796 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-07 20:57:05,821 INFO L134 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-07 20:57:05,821 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 20:57:05,825 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs. 9/59 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 20:57:05,827 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-07 20:57:05,836 INFO L134 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-07 20:57:05,836 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 20:57:05,837 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs. 9/59 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 20:57:05,838 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-07 20:57:05,839 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 20:57:06,582 INFO L206 etLargeBlockEncoding]: Checked pairs total: 411 [2019-12-07 20:57:06,583 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2019-12-07 20:57:06,585 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-07 20:57:06,593 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-07 20:57:06,594 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-07 20:57:06,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 20:57:06,598 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:06,599 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:57:06,599 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:57:06,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:06,602 INFO L82 PathProgramCache]: Analyzing trace with hash 942939300, now seen corresponding path program 1 times [2019-12-07 20:57:06,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:06,609 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536465782] [2019-12-07 20:57:06,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:06,782 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 20:57:06,782 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536465782] [2019-12-07 20:57:06,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:57:06,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 20:57:06,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032824705] [2019-12-07 20:57:06,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:57:06,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:06,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:57:06,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:57:06,798 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-07 20:57:06,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:06,820 INFO L93 Difference]: Finished difference Result 50 states and 96 transitions. [2019-12-07 20:57:06,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:57:06,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 20:57:06,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:06,830 INFO L225 Difference]: With dead ends: 50 [2019-12-07 20:57:06,830 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 20:57:06,831 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:57:06,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 20:57:06,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 20:57:06,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 20:57:06,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 69 transitions. [2019-12-07 20:57:06,857 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 69 transitions. Word has length 8 [2019-12-07 20:57:06,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:06,858 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 69 transitions. [2019-12-07 20:57:06,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:57:06,858 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 69 transitions. [2019-12-07 20:57:06,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 20:57:06,859 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:06,859 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:57:06,860 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:57:06,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:06,860 INFO L82 PathProgramCache]: Analyzing trace with hash -745203074, now seen corresponding path program 1 times [2019-12-07 20:57:06,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:06,860 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142584819] [2019-12-07 20:57:06,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:06,937 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 20:57:06,938 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142584819] [2019-12-07 20:57:06,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:57:06,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 20:57:06,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266088490] [2019-12-07 20:57:06,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 20:57:06,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:06,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 20:57:06,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:57:06,940 INFO L87 Difference]: Start difference. First operand 36 states and 69 transitions. Second operand 5 states. [2019-12-07 20:57:06,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:06,984 INFO L93 Difference]: Finished difference Result 38 states and 66 transitions. [2019-12-07 20:57:06,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 20:57:06,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-07 20:57:06,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:06,985 INFO L225 Difference]: With dead ends: 38 [2019-12-07 20:57:06,985 INFO L226 Difference]: Without dead ends: 30 [2019-12-07 20:57:06,985 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 20:57:06,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-07 20:57:06,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-12-07 20:57:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 20:57:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 50 transitions. [2019-12-07 20:57:06,989 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 50 transitions. Word has length 9 [2019-12-07 20:57:06,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:06,989 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 50 transitions. [2019-12-07 20:57:06,989 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 20:57:06,989 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 50 transitions. [2019-12-07 20:57:06,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 20:57:06,990 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:06,990 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:57:06,990 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:57:06,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:06,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1626399439, now seen corresponding path program 1 times [2019-12-07 20:57:06,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:06,990 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567384275] [2019-12-07 20:57:06,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:07,046 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 20:57:07,046 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567384275] [2019-12-07 20:57:07,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:57:07,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 20:57:07,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512196346] [2019-12-07 20:57:07,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 20:57:07,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:07,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 20:57:07,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 20:57:07,048 INFO L87 Difference]: Start difference. First operand 30 states and 50 transitions. Second operand 6 states. [2019-12-07 20:57:07,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:07,090 INFO L93 Difference]: Finished difference Result 28 states and 44 transitions. [2019-12-07 20:57:07,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 20:57:07,090 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 20:57:07,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:07,091 INFO L225 Difference]: With dead ends: 28 [2019-12-07 20:57:07,091 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 20:57:07,091 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-07 20:57:07,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 20:57:07,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-12-07 20:57:07,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 20:57:07,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 38 transitions. [2019-12-07 20:57:07,094 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 38 transitions. Word has length 10 [2019-12-07 20:57:07,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:07,094 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 38 transitions. [2019-12-07 20:57:07,094 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 20:57:07,094 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 38 transitions. [2019-12-07 20:57:07,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 20:57:07,095 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:07,095 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:57:07,095 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:57:07,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:07,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1121287201, now seen corresponding path program 1 times [2019-12-07 20:57:07,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:07,095 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173439375] [2019-12-07 20:57:07,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:07,137 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 20:57:07,137 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173439375] [2019-12-07 20:57:07,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:57:07,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 20:57:07,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993609272] [2019-12-07 20:57:07,138 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:57:07,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:07,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:57:07,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:57:07,138 INFO L87 Difference]: Start difference. First operand 24 states and 38 transitions. Second operand 4 states. [2019-12-07 20:57:07,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:07,153 INFO L93 Difference]: Finished difference Result 27 states and 40 transitions. [2019-12-07 20:57:07,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 20:57:07,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 20:57:07,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:07,154 INFO L225 Difference]: With dead ends: 27 [2019-12-07 20:57:07,154 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 20:57:07,154 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:57:07,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 20:57:07,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 20:57:07,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 20:57:07,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-12-07 20:57:07,156 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2019-12-07 20:57:07,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:07,156 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-12-07 20:57:07,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:57:07,156 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-12-07 20:57:07,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 20:57:07,157 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:07,157 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:57:07,157 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:57:07,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:07,157 INFO L82 PathProgramCache]: Analyzing trace with hash 2077681673, now seen corresponding path program 2 times [2019-12-07 20:57:07,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:07,157 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336970176] [2019-12-07 20:57:07,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:07,198 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 20:57:07,199 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336970176] [2019-12-07 20:57:07,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:57:07,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 20:57:07,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902235479] [2019-12-07 20:57:07,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 20:57:07,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:07,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 20:57:07,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:57:07,200 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 5 states. [2019-12-07 20:57:07,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:07,213 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-12-07 20:57:07,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:57:07,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 20:57:07,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:07,214 INFO L225 Difference]: With dead ends: 19 [2019-12-07 20:57:07,214 INFO L226 Difference]: Without dead ends: 14 [2019-12-07 20:57:07,214 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 20:57:07,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-07 20:57:07,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-07 20:57:07,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 20:57:07,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-12-07 20:57:07,216 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2019-12-07 20:57:07,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:07,217 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-12-07 20:57:07,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 20:57:07,217 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-12-07 20:57:07,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 20:57:07,217 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:07,217 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:57:07,218 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:57:07,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:07,218 INFO L82 PathProgramCache]: Analyzing trace with hash 2080305203, now seen corresponding path program 3 times [2019-12-07 20:57:07,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:07,218 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404333803] [2019-12-07 20:57:07,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:07,259 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 20:57:07,260 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404333803] [2019-12-07 20:57:07,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:57:07,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 20:57:07,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92682361] [2019-12-07 20:57:07,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:57:07,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:07,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:57:07,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:57:07,261 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 4 states. [2019-12-07 20:57:07,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:07,273 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-12-07 20:57:07,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 20:57:07,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 20:57:07,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:07,274 INFO L225 Difference]: With dead ends: 13 [2019-12-07 20:57:07,274 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 20:57:07,275 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:57:07,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 20:57:07,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 20:57:07,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 20:57:07,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 20:57:07,275 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 20:57:07,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:07,276 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 20:57:07,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:57:07,276 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 20:57:07,276 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 20:57:07,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:57:07 BasicIcfg [2019-12-07 20:57:07,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:57:07,279 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:57:07,280 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:57:07,280 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:57:07,280 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:57:05" (3/4) ... [2019-12-07 20:57:07,283 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 20:57:07,287 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 20:57:07,287 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 20:57:07,287 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 20:57:07,290 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 20:57:07,290 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 20:57:07,290 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 20:57:07,322 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5da9f744-d7dd-40d5-842d-3c0723d5d0ee/bin/utaipan/witness.graphml [2019-12-07 20:57:07,322 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:57:07,324 INFO L168 Benchmark]: Toolchain (without parser) took 2319.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 940.7 MB in the beginning and 1.0 GB in the end (delta: -83.1 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:07,325 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:57:07,325 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -131.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:07,326 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.28 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:57:07,326 INFO L168 Benchmark]: Boogie Preprocessor took 21.16 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:57:07,326 INFO L168 Benchmark]: RCFGBuilder took 253.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:07,327 INFO L168 Benchmark]: TraceAbstraction took 1552.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:07,327 INFO L168 Benchmark]: Witness Printer took 43.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:07,329 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 401.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -131.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.28 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.16 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 253.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1552.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * Witness Printer took 43.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 64 ProgramPointsBefore, 21 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 15 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 236 VarBasedMoverChecksPositive, 10 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 12 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 411 CheckedPairsTotal, 45 TotalNumberOfCompositions - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 55 locations, 1 error locations. Result: SAFE, OverallTime: 1.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 75 SDslu, 51 SDs, 0 SdLazy, 53 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 2748 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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...