./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin001_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_31b01a46-7e29-4a65-819d-20aa435549b5/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_31b01a46-7e29-4a65-819d-20aa435549b5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_31b01a46-7e29-4a65-819d-20aa435549b5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_31b01a46-7e29-4a65-819d-20aa435549b5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin001_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_31b01a46-7e29-4a65-819d-20aa435549b5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_31b01a46-7e29-4a65-819d-20aa435549b5/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d55a4f14ea7c1bbc15f911f5cd2399be61506ea2 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:59:49,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:59:49,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:59:49,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:59:49,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:59:49,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:59:49,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:59:49,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:59:49,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:59:49,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:59:49,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:59:49,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:59:49,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:59:49,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:59:49,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:59:49,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:59:49,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:59:49,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:59:49,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:59:49,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:59:49,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:59:49,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:59:49,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:59:49,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:59:49,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:59:49,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:59:49,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:59:49,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:59:49,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:59:49,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:59:49,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:59:49,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:59:49,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:59:49,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:59:49,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:59:49,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:59:49,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:59:49,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:59:49,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:59:49,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:59:49,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:59:49,431 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_31b01a46-7e29-4a65-819d-20aa435549b5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:59:49,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:59:49,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:59:49,460 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:59:49,460 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:59:49,460 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:59:49,461 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:59:49,461 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:59:49,461 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:59:49,461 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:59:49,462 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:59:49,462 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:59:49,462 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:59:49,463 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:59:49,463 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:59:49,463 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:59:49,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:59:49,464 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:59:49,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:59:49,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:59:49,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:59:49,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:59:49,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:59:49,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:59:49,465 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:59:49,466 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:59:49,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:59:49,466 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:59:49,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:59:49,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:59:49,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:59:49,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:59:49,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:59:49,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:59:49,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:59:49,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:59:49,468 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:59:49,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:59:49,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:59:49,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:59:49,469 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:59:49,469 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_31b01a46-7e29-4a65-819d-20aa435549b5/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_31b01a46-7e29-4a65-819d-20aa435549b5/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d55a4f14ea7c1bbc15f911f5cd2399be61506ea2 [2020-11-22 12:59:49,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:59:49,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:59:49,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:59:49,741 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:59:49,742 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:59:49,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_31b01a46-7e29-4a65-819d-20aa435549b5/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/thin001_pso.opt.i [2020-11-22 12:59:49,850 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_31b01a46-7e29-4a65-819d-20aa435549b5/bin/utaipan/data/0523463e3/96d10a51114f45b39b3c23c3ba1d7f81/FLAGadeec3d73 [2020-11-22 12:59:50,474 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:59:50,474 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_31b01a46-7e29-4a65-819d-20aa435549b5/sv-benchmarks/c/pthread-wmm/thin001_pso.opt.i [2020-11-22 12:59:50,499 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_31b01a46-7e29-4a65-819d-20aa435549b5/bin/utaipan/data/0523463e3/96d10a51114f45b39b3c23c3ba1d7f81/FLAGadeec3d73 [2020-11-22 12:59:50,807 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_31b01a46-7e29-4a65-819d-20aa435549b5/bin/utaipan/data/0523463e3/96d10a51114f45b39b3c23c3ba1d7f81 [2020-11-22 12:59:50,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:59:50,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:59:50,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:59:50,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:59:50,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:59:50,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:59:50" (1/1) ... [2020-11-22 12:59:50,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b673ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:50, skipping insertion in model container [2020-11-22 12:59:50,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:59:50" (1/1) ... [2020-11-22 12:59:50,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:59:50,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:59:51,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:59:51,267 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:59:51,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:59:51,392 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:59:51,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:51 WrapperNode [2020-11-22 12:59:51,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:59:51,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:59:51,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:59:51,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:59:51,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:51" (1/1) ... [2020-11-22 12:59:51,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:51" (1/1) ... [2020-11-22 12:59:51,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:59:51,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:59:51,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:59:51,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:59:51,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:51" (1/1) ... [2020-11-22 12:59:51,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:51" (1/1) ... [2020-11-22 12:59:51,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:51" (1/1) ... [2020-11-22 12:59:51,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:51" (1/1) ... [2020-11-22 12:59:51,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:51" (1/1) ... [2020-11-22 12:59:51,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:51" (1/1) ... [2020-11-22 12:59:51,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:51" (1/1) ... [2020-11-22 12:59:51,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:59:51,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:59:51,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:59:51,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:59:51,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31b01a46-7e29-4a65-819d-20aa435549b5/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:59:51,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:59:51,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-22 12:59:51,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:59:51,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:59:51,540 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-22 12:59:51,540 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-22 12:59:51,540 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-22 12:59:51,540 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-22 12:59:51,540 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-22 12:59:51,540 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-22 12:59:51,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:59:51,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-22 12:59:51,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:59:51,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:59:51,543 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-22 12:59:51,955 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:59:51,955 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-22 12:59:51,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:51 BoogieIcfgContainer [2020-11-22 12:59:51,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:59:51,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:59:51,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:59:51,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:59:51,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:59:50" (1/3) ... [2020-11-22 12:59:51,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78b65fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:59:51, skipping insertion in model container [2020-11-22 12:59:51,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:51" (2/3) ... [2020-11-22 12:59:51,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78b65fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:59:51, skipping insertion in model container [2020-11-22 12:59:51,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:51" (3/3) ... [2020-11-22 12:59:51,967 INFO L111 eAbstractionObserver]: Analyzing ICFG thin001_pso.opt.i [2020-11-22 12:59:51,978 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-22 12:59:51,978 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:59:51,981 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:59:51,982 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-22 12:59:52,007 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,007 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,007 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,007 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,008 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,008 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,013 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,014 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,014 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,015 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,015 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,015 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,016 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,016 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,016 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,016 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,017 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,017 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,019 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,020 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,020 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,020 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,025 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,025 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,025 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,025 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,032 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,032 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,032 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,032 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:52,038 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-22 12:59:52,049 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-22 12:59:52,070 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:59:52,070 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:59:52,070 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:59:52,070 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:59:52,070 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:59:52,070 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:59:52,070 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:59:52,071 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:59:52,082 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-22 12:59:52,084 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 80 transitions, 175 flow [2020-11-22 12:59:52,087 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 80 transitions, 175 flow [2020-11-22 12:59:52,088 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 175 flow [2020-11-22 12:59:52,154 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-11-22 12:59:52,154 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-22 12:59:52,162 INFO L80 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 3/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-22 12:59:52,165 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-22 12:59:53,666 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-11-22 12:59:54,172 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-11-22 12:59:54,733 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-11-22 12:59:54,851 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-22 12:59:54,990 INFO L131 LiptonReduction]: Checked pairs total: 2810 [2020-11-22 12:59:54,991 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-11-22 12:59:54,996 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-22 12:59:55,034 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-22 12:59:55,036 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-22 12:59:55,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:59:55,044 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:55,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:55,045 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:55,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:55,050 INFO L82 PathProgramCache]: Analyzing trace with hash -853874994, now seen corresponding path program 1 times [2020-11-22 12:59:55,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:55,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545846035] [2020-11-22 12:59:55,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:55,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:55,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545846035] [2020-11-22 12:59:55,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:55,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 12:59:55,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076741537] [2020-11-22 12:59:55,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:55,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:55,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:55,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:55,354 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-22 12:59:55,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:55,415 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-22 12:59:55,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:55,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-22 12:59:55,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:55,436 INFO L225 Difference]: With dead ends: 282 [2020-11-22 12:59:55,437 INFO L226 Difference]: Without dead ends: 218 [2020-11-22 12:59:55,438 INFO L677 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 [2020-11-22 12:59:55,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-22 12:59:55,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-22 12:59:55,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-22 12:59:55,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-22 12:59:55,531 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-22 12:59:55,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:55,533 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-22 12:59:55,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:55,533 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-22 12:59:55,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 12:59:55,540 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:55,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:55,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:59:55,541 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:55,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:55,544 INFO L82 PathProgramCache]: Analyzing trace with hash -700352928, now seen corresponding path program 1 times [2020-11-22 12:59:55,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:55,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957591166] [2020-11-22 12:59:55,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:55,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:55,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957591166] [2020-11-22 12:59:55,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:55,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:59:55,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689328429] [2020-11-22 12:59:55,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:55,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:55,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:55,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:55,673 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-11-22 12:59:55,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:55,705 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-11-22 12:59:55,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:59:55,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-22 12:59:55,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:55,709 INFO L225 Difference]: With dead ends: 242 [2020-11-22 12:59:55,709 INFO L226 Difference]: Without dead ends: 146 [2020-11-22 12:59:55,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:59:55,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-22 12:59:55,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-22 12:59:55,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-22 12:59:55,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-11-22 12:59:55,728 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-11-22 12:59:55,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:55,728 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-11-22 12:59:55,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:55,729 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-11-22 12:59:55,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:59:55,731 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:55,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:55,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:59:55,732 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:55,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:55,733 INFO L82 PathProgramCache]: Analyzing trace with hash 2063010818, now seen corresponding path program 1 times [2020-11-22 12:59:55,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:55,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479579351] [2020-11-22 12:59:55,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:55,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:55,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479579351] [2020-11-22 12:59:55,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:55,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 12:59:55,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461676333] [2020-11-22 12:59:55,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:55,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:55,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:55,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:55,814 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-11-22 12:59:55,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:55,826 INFO L93 Difference]: Finished difference Result 140 states and 343 transitions. [2020-11-22 12:59:55,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:55,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-22 12:59:55,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:55,829 INFO L225 Difference]: With dead ends: 140 [2020-11-22 12:59:55,829 INFO L226 Difference]: Without dead ends: 140 [2020-11-22 12:59:55,830 INFO L677 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 [2020-11-22 12:59:55,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-22 12:59:55,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-11-22 12:59:55,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-22 12:59:55,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 343 transitions. [2020-11-22 12:59:55,841 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 343 transitions. Word has length 11 [2020-11-22 12:59:55,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:55,841 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 343 transitions. [2020-11-22 12:59:55,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:55,841 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 343 transitions. [2020-11-22 12:59:55,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 12:59:55,846 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:55,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:55,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:59:55,846 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:55,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:55,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1374781277, now seen corresponding path program 1 times [2020-11-22 12:59:55,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:55,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600961625] [2020-11-22 12:59:55,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:55,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:55,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600961625] [2020-11-22 12:59:55,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:55,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:59:55,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941133910] [2020-11-22 12:59:55,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:55,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:55,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:55,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:55,926 INFO L87 Difference]: Start difference. First operand 140 states and 343 transitions. Second operand 4 states. [2020-11-22 12:59:55,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:55,946 INFO L93 Difference]: Finished difference Result 158 states and 376 transitions. [2020-11-22 12:59:55,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:59:55,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-22 12:59:55,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:55,947 INFO L225 Difference]: With dead ends: 158 [2020-11-22 12:59:55,947 INFO L226 Difference]: Without dead ends: 68 [2020-11-22 12:59:55,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:59:55,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-22 12:59:55,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-11-22 12:59:55,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-22 12:59:55,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-11-22 12:59:55,953 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 12 [2020-11-22 12:59:55,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:55,953 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-11-22 12:59:55,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:55,953 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-11-22 12:59:55,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 12:59:55,954 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:55,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:55,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:59:55,954 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:55,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:55,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1721558133, now seen corresponding path program 1 times [2020-11-22 12:59:55,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:55,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946083050] [2020-11-22 12:59:55,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:56,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:56,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946083050] [2020-11-22 12:59:56,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:56,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:59:56,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474686014] [2020-11-22 12:59:56,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:56,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:56,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:56,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:56,013 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-11-22 12:59:56,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:56,034 INFO L93 Difference]: Finished difference Result 56 states and 112 transitions. [2020-11-22 12:59:56,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:59:56,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-22 12:59:56,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:56,036 INFO L225 Difference]: With dead ends: 56 [2020-11-22 12:59:56,036 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:59:56,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:59:56,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:59:56,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:59:56,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:59:56,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:59:56,037 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-22 12:59:56,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:56,037 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:59:56,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:56,038 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:59:56,038 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:59:56,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:59:56,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:59:56 BasicIcfg [2020-11-22 12:59:56,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:59:56,041 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:59:56,041 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:59:56,042 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:59:56,042 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:51" (3/4) ... [2020-11-22 12:59:56,046 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:59:56,052 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-22 12:59:56,052 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-22 12:59:56,053 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-22 12:59:56,059 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-22 12:59:56,059 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 12:59:56,059 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:59:56,060 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:59:56,111 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_31b01a46-7e29-4a65-819d-20aa435549b5/bin/utaipan/witness.graphml [2020-11-22 12:59:56,111 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:59:56,112 INFO L168 Benchmark]: Toolchain (without parser) took 5294.45 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 63.0 MB in the beginning and 66.4 MB in the end (delta: -3.4 MB). Peak memory consumption was 43.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:56,113 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory is still 55.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:59:56,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 572.98 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 63.0 MB in the beginning and 73.2 MB in the end (delta: -10.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:56,114 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.71 ms. Allocated memory is still 117.4 MB. Free memory was 72.5 MB in the beginning and 71.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:56,114 INFO L168 Benchmark]: Boogie Preprocessor took 25.99 ms. Allocated memory is still 117.4 MB. Free memory was 71.0 MB in the beginning and 69.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:59:56,114 INFO L168 Benchmark]: RCFGBuilder took 493.29 ms. Allocated memory is still 117.4 MB. Free memory was 69.8 MB in the beginning and 47.3 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:56,115 INFO L168 Benchmark]: TraceAbstraction took 4081.97 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 46.7 MB in the beginning and 68.5 MB in the end (delta: -21.7 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:56,116 INFO L168 Benchmark]: Witness Printer took 69.46 ms. Allocated memory is still 142.6 MB. Free memory was 68.5 MB in the beginning and 66.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:56,118 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory is still 55.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 572.98 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 63.0 MB in the beginning and 73.2 MB in the end (delta: -10.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.71 ms. Allocated memory is still 117.4 MB. Free memory was 72.5 MB in the beginning and 71.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.99 ms. Allocated memory is still 117.4 MB. Free memory was 71.0 MB in the beginning and 69.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 493.29 ms. Allocated memory is still 117.4 MB. Free memory was 69.8 MB in the beginning and 47.3 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4081.97 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 46.7 MB in the beginning and 68.5 MB in the end (delta: -21.7 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Witness Printer took 69.46 ms. Allocated memory is still 142.6 MB. Free memory was 68.5 MB in the beginning and 66.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1074 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 95 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.9s, 87 PlacesBefore, 31 PlacesAfterwards, 80 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2810 MoverChecksTotal - PositiveResult [Line: 17]: 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, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 81 SDtfs, 75 SDslu, 56 SDs, 0 SdLazy, 18 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1434 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...