./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/szymanski.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_3347b080-f215-4052-9361-9cf3656bdca8/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3347b080-f215-4052-9361-9cf3656bdca8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3347b080-f215-4052-9361-9cf3656bdca8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3347b080-f215-4052-9361-9cf3656bdca8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/szymanski.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3347b080-f215-4052-9361-9cf3656bdca8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3347b080-f215-4052-9361-9cf3656bdca8/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 e53ed3e60647ae986bdffbbdb754e5112804a196 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 11:39:16,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:39:16,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:39:16,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:39:16,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:39:16,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:39:16,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:39:16,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:39:16,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:39:16,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:39:16,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:39:16,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:39:16,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:39:16,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:39:16,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:39:16,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:39:16,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:39:16,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:39:16,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:39:16,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:39:16,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:39:16,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:39:16,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:39:16,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:39:16,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:39:16,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:39:16,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:39:16,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:39:16,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:39:16,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:39:16,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:39:16,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:39:16,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:39:16,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:39:16,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:39:16,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:39:16,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:39:16,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:39:16,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:39:16,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:39:16,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:39:16,914 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3347b080-f215-4052-9361-9cf3656bdca8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 11:39:16,924 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:39:16,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:39:16,925 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 11:39:16,925 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 11:39:16,925 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 11:39:16,925 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 11:39:16,925 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 11:39:16,926 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 11:39:16,926 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 11:39:16,926 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 11:39:16,926 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 11:39:16,926 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 11:39:16,926 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 11:39:16,926 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 11:39:16,926 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 11:39:16,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:39:16,927 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:39:16,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:39:16,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:39:16,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:39:16,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 11:39:16,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:39:16,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 11:39:16,928 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 11:39:16,928 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:39:16,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:39:16,928 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:39:16,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 11:39:16,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:39:16,928 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:39:16,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:39:16,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:39:16,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:39:16,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:39:16,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 11:39:16,929 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 11:39:16,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 11:39:16,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 11:39:16,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:39:16,930 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 11:39:16,930 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_3347b080-f215-4052-9361-9cf3656bdca8/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 -> e53ed3e60647ae986bdffbbdb754e5112804a196 [2019-12-07 11:39:17,028 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:39:17,038 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:39:17,041 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:39:17,042 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:39:17,043 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:39:17,043 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3347b080-f215-4052-9361-9cf3656bdca8/bin/utaipan/../../sv-benchmarks/c/pthread-atomic/szymanski.i [2019-12-07 11:39:17,088 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3347b080-f215-4052-9361-9cf3656bdca8/bin/utaipan/data/86ba9cc03/9f4424dca3e44106bf67f1df4f30d314/FLAG970638165 [2019-12-07 11:39:17,510 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:39:17,511 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3347b080-f215-4052-9361-9cf3656bdca8/sv-benchmarks/c/pthread-atomic/szymanski.i [2019-12-07 11:39:17,522 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3347b080-f215-4052-9361-9cf3656bdca8/bin/utaipan/data/86ba9cc03/9f4424dca3e44106bf67f1df4f30d314/FLAG970638165 [2019-12-07 11:39:17,872 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3347b080-f215-4052-9361-9cf3656bdca8/bin/utaipan/data/86ba9cc03/9f4424dca3e44106bf67f1df4f30d314 [2019-12-07 11:39:17,877 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:39:17,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:39:17,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:39:17,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:39:17,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:39:17,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:39:17" (1/1) ... [2019-12-07 11:39:17,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b9bee7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:17, skipping insertion in model container [2019-12-07 11:39:17,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:39:17" (1/1) ... [2019-12-07 11:39:17,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:39:17,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:39:18,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:39:18,160 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:39:18,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:39:18,229 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:39:18,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:18 WrapperNode [2019-12-07 11:39:18,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:39:18,230 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:39:18,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:39:18,230 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:39:18,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:18" (1/1) ... [2019-12-07 11:39:18,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:18" (1/1) ... [2019-12-07 11:39:18,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:39:18,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:39:18,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:39:18,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:39:18,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:18" (1/1) ... [2019-12-07 11:39:18,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:18" (1/1) ... [2019-12-07 11:39:18,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:18" (1/1) ... [2019-12-07 11:39:18,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:18" (1/1) ... [2019-12-07 11:39:18,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:18" (1/1) ... [2019-12-07 11:39:18,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:18" (1/1) ... [2019-12-07 11:39:18,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:18" (1/1) ... [2019-12-07 11:39:18,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:39:18,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:39:18,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:39:18,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:39:18,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3347b080-f215-4052-9361-9cf3656bdca8/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 11:39:18,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 11:39:18,322 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-12-07 11:39:18,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-12-07 11:39:18,322 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-12-07 11:39:18,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-12-07 11:39:18,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 11:39:18,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 11:39:18,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 11:39:18,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:39:18,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:39:18,324 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 11:39:18,525 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:39:18,525 INFO L287 CfgBuilder]: Removed 12 assume(true) statements. [2019-12-07 11:39:18,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:39:18 BoogieIcfgContainer [2019-12-07 11:39:18,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:39:18,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 11:39:18,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 11:39:18,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 11:39:18,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 11:39:17" (1/3) ... [2019-12-07 11:39:18,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fae1af8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:39:18, skipping insertion in model container [2019-12-07 11:39:18,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:39:18" (2/3) ... [2019-12-07 11:39:18,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fae1af8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:39:18, skipping insertion in model container [2019-12-07 11:39:18,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:39:18" (3/3) ... [2019-12-07 11:39:18,531 INFO L109 eAbstractionObserver]: Analyzing ICFG szymanski.i [2019-12-07 11:39:18,537 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 11:39:18,537 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 11:39:18,541 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-12-07 11:39:18,542 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 11:39:18,561 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 11:39:18,561 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 11:39:18,561 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 11:39:18,561 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 11:39:18,562 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 11:39:18,562 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 11:39:18,563 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 11:39:18,563 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 11:39:18,563 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 11:39:18,563 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 11:39:18,564 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 11:39:18,564 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 11:39:18,581 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-07 11:39:18,593 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 11:39:18,593 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 11:39:18,593 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 11:39:18,593 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:39:18,593 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:39:18,593 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 11:39:18,593 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:39:18,594 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 11:39:18,602 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 87 transitions [2019-12-07 11:39:18,604 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 72 places, 87 transitions [2019-12-07 11:39:18,633 INFO L134 PetriNetUnfolder]: 21/87 cut-off events. [2019-12-07 11:39:18,633 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 11:39:18,638 INFO L76 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 87 events. 21/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 201 event pairs. 19/84 useless extension candidates. Maximal degree in co-relation 65. Up to 3 conditions per place. [2019-12-07 11:39:18,641 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 72 places, 87 transitions [2019-12-07 11:39:18,655 INFO L134 PetriNetUnfolder]: 21/87 cut-off events. [2019-12-07 11:39:18,655 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 11:39:18,656 INFO L76 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 87 events. 21/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 201 event pairs. 19/84 useless extension candidates. Maximal degree in co-relation 65. Up to 3 conditions per place. [2019-12-07 11:39:18,658 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2160 [2019-12-07 11:39:18,659 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 11:39:19,270 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4147 [2019-12-07 11:39:19,270 INFO L214 etLargeBlockEncoding]: Total number of compositions: 38 [2019-12-07 11:39:19,272 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 59 transitions [2019-12-07 11:39:19,303 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 509 states. [2019-12-07 11:39:19,305 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states. [2019-12-07 11:39:19,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 11:39:19,310 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:39:19,310 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:39:19,310 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:39:19,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:39:19,314 INFO L82 PathProgramCache]: Analyzing trace with hash -223988154, now seen corresponding path program 1 times [2019-12-07 11:39:19,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:39:19,321 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068920268] [2019-12-07 11:39:19,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:39:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:39:19,413 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 11:39:19,414 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068920268] [2019-12-07 11:39:19,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:39:19,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 11:39:19,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566649538] [2019-12-07 11:39:19,418 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 11:39:19,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:39:19,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 11:39:19,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 11:39:19,429 INFO L87 Difference]: Start difference. First operand 509 states. Second operand 2 states. [2019-12-07 11:39:19,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:39:19,454 INFO L93 Difference]: Finished difference Result 509 states and 1466 transitions. [2019-12-07 11:39:19,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 11:39:19,455 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-12-07 11:39:19,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:39:19,468 INFO L225 Difference]: With dead ends: 509 [2019-12-07 11:39:19,469 INFO L226 Difference]: Without dead ends: 470 [2019-12-07 11:39:19,469 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 11:39:19,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2019-12-07 11:39:19,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2019-12-07 11:39:19,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2019-12-07 11:39:19,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1363 transitions. [2019-12-07 11:39:19,526 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1363 transitions. Word has length 8 [2019-12-07 11:39:19,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:39:19,527 INFO L462 AbstractCegarLoop]: Abstraction has 470 states and 1363 transitions. [2019-12-07 11:39:19,527 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 11:39:19,527 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1363 transitions. [2019-12-07 11:39:19,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 11:39:19,528 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:39:19,528 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:39:19,528 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:39:19,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:39:19,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1417283260, now seen corresponding path program 1 times [2019-12-07 11:39:19,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:39:19,529 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284468333] [2019-12-07 11:39:19,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:39:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:39:19,569 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 11:39:19,569 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284468333] [2019-12-07 11:39:19,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:39:19,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 11:39:19,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706676670] [2019-12-07 11:39:19,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:39:19,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:39:19,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:39:19,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:39:19,572 INFO L87 Difference]: Start difference. First operand 470 states and 1363 transitions. Second operand 3 states. [2019-12-07 11:39:19,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:39:19,593 INFO L93 Difference]: Finished difference Result 481 states and 1359 transitions. [2019-12-07 11:39:19,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:39:19,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-07 11:39:19,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:39:19,597 INFO L225 Difference]: With dead ends: 481 [2019-12-07 11:39:19,597 INFO L226 Difference]: Without dead ends: 391 [2019-12-07 11:39:19,597 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:39:19,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2019-12-07 11:39:19,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 373. [2019-12-07 11:39:19,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2019-12-07 11:39:19,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1071 transitions. [2019-12-07 11:39:19,615 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1071 transitions. Word has length 10 [2019-12-07 11:39:19,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:39:19,615 INFO L462 AbstractCegarLoop]: Abstraction has 373 states and 1071 transitions. [2019-12-07 11:39:19,615 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:39:19,615 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1071 transitions. [2019-12-07 11:39:19,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 11:39:19,617 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:39:19,617 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:39:19,617 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:39:19,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:39:19,617 INFO L82 PathProgramCache]: Analyzing trace with hash -2015895147, now seen corresponding path program 1 times [2019-12-07 11:39:19,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:39:19,618 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37955005] [2019-12-07 11:39:19,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:39:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:39:19,646 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 11:39:19,646 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37955005] [2019-12-07 11:39:19,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:39:19,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 11:39:19,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975369690] [2019-12-07 11:39:19,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:39:19,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:39:19,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:39:19,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:39:19,648 INFO L87 Difference]: Start difference. First operand 373 states and 1071 transitions. Second operand 3 states. [2019-12-07 11:39:19,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:39:19,661 INFO L93 Difference]: Finished difference Result 360 states and 1018 transitions. [2019-12-07 11:39:19,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:39:19,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-12-07 11:39:19,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:39:19,663 INFO L225 Difference]: With dead ends: 360 [2019-12-07 11:39:19,664 INFO L226 Difference]: Without dead ends: 264 [2019-12-07 11:39:19,664 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:39:19,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2019-12-07 11:39:19,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2019-12-07 11:39:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2019-12-07 11:39:19,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 749 transitions. [2019-12-07 11:39:19,672 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 749 transitions. Word has length 12 [2019-12-07 11:39:19,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:39:19,673 INFO L462 AbstractCegarLoop]: Abstraction has 264 states and 749 transitions. [2019-12-07 11:39:19,673 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:39:19,673 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 749 transitions. [2019-12-07 11:39:19,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 11:39:19,675 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:39:19,675 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:39:19,675 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:39:19,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:39:19,675 INFO L82 PathProgramCache]: Analyzing trace with hash 573136511, now seen corresponding path program 1 times [2019-12-07 11:39:19,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:39:19,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178489007] [2019-12-07 11:39:19,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:39:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:39:19,702 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 11:39:19,702 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178489007] [2019-12-07 11:39:19,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:39:19,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:39:19,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903592860] [2019-12-07 11:39:19,703 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:39:19,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:39:19,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:39:19,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:39:19,703 INFO L87 Difference]: Start difference. First operand 264 states and 749 transitions. Second operand 3 states. [2019-12-07 11:39:19,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:39:19,728 INFO L93 Difference]: Finished difference Result 292 states and 809 transitions. [2019-12-07 11:39:19,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:39:19,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-12-07 11:39:19,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:39:19,730 INFO L225 Difference]: With dead ends: 292 [2019-12-07 11:39:19,730 INFO L226 Difference]: Without dead ends: 280 [2019-12-07 11:39:19,731 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 11:39:19,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2019-12-07 11:39:19,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2019-12-07 11:39:19,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2019-12-07 11:39:19,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 773 transitions. [2019-12-07 11:39:19,738 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 773 transitions. Word has length 19 [2019-12-07 11:39:19,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:39:19,739 INFO L462 AbstractCegarLoop]: Abstraction has 280 states and 773 transitions. [2019-12-07 11:39:19,739 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:39:19,739 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 773 transitions. [2019-12-07 11:39:19,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 11:39:19,740 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:39:19,741 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:39:19,741 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:39:19,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:39:19,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1551241601, now seen corresponding path program 2 times [2019-12-07 11:39:19,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:39:19,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428286972] [2019-12-07 11:39:19,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:39:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:39:19,762 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 11:39:19,763 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428286972] [2019-12-07 11:39:19,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:39:19,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:39:19,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444494398] [2019-12-07 11:39:19,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:39:19,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:39:19,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:39:19,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:39:19,770 INFO L87 Difference]: Start difference. First operand 280 states and 773 transitions. Second operand 3 states. [2019-12-07 11:39:19,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:39:19,794 INFO L93 Difference]: Finished difference Result 312 states and 828 transitions. [2019-12-07 11:39:19,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:39:19,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-12-07 11:39:19,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:39:19,796 INFO L225 Difference]: With dead ends: 312 [2019-12-07 11:39:19,796 INFO L226 Difference]: Without dead ends: 230 [2019-12-07 11:39:19,797 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 11:39:19,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2019-12-07 11:39:19,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 226. [2019-12-07 11:39:19,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2019-12-07 11:39:19,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 555 transitions. [2019-12-07 11:39:19,806 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 555 transitions. Word has length 19 [2019-12-07 11:39:19,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:39:19,806 INFO L462 AbstractCegarLoop]: Abstraction has 226 states and 555 transitions. [2019-12-07 11:39:19,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:39:19,806 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 555 transitions. [2019-12-07 11:39:19,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 11:39:19,807 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:39:19,807 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:39:19,808 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:39:19,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:39:19,808 INFO L82 PathProgramCache]: Analyzing trace with hash 926221059, now seen corresponding path program 3 times [2019-12-07 11:39:19,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:39:19,808 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877453461] [2019-12-07 11:39:19,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:39:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:39:19,828 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 11:39:19,829 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877453461] [2019-12-07 11:39:19,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:39:19,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:39:19,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530972593] [2019-12-07 11:39:19,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:39:19,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:39:19,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:39:19,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:39:19,830 INFO L87 Difference]: Start difference. First operand 226 states and 555 transitions. Second operand 3 states. [2019-12-07 11:39:19,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:39:19,848 INFO L93 Difference]: Finished difference Result 210 states and 499 transitions. [2019-12-07 11:39:19,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:39:19,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-12-07 11:39:19,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:39:19,850 INFO L225 Difference]: With dead ends: 210 [2019-12-07 11:39:19,850 INFO L226 Difference]: Without dead ends: 210 [2019-12-07 11:39:19,850 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 11:39:19,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2019-12-07 11:39:19,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2019-12-07 11:39:19,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2019-12-07 11:39:19,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 499 transitions. [2019-12-07 11:39:19,855 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 499 transitions. Word has length 19 [2019-12-07 11:39:19,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:39:19,855 INFO L462 AbstractCegarLoop]: Abstraction has 210 states and 499 transitions. [2019-12-07 11:39:19,855 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:39:19,855 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 499 transitions. [2019-12-07 11:39:19,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 11:39:19,856 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:39:19,856 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:39:19,856 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:39:19,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:39:19,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1185214475, now seen corresponding path program 4 times [2019-12-07 11:39:19,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:39:19,856 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460000527] [2019-12-07 11:39:19,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:39:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:39:19,878 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 11:39:19,879 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460000527] [2019-12-07 11:39:19,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:39:19,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:39:19,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298568582] [2019-12-07 11:39:19,879 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:39:19,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:39:19,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:39:19,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:39:19,880 INFO L87 Difference]: Start difference. First operand 210 states and 499 transitions. Second operand 3 states. [2019-12-07 11:39:19,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:39:19,897 INFO L93 Difference]: Finished difference Result 160 states and 390 transitions. [2019-12-07 11:39:19,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:39:19,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-12-07 11:39:19,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:39:19,898 INFO L225 Difference]: With dead ends: 160 [2019-12-07 11:39:19,898 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 11:39:19,898 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 11:39:19,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 11:39:19,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 11:39:19,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 11:39:19,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 11:39:19,899 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-12-07 11:39:19,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:39:19,899 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:39:19,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:39:19,899 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 11:39:19,900 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 11:39:19,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 11:39:19 BasicIcfg [2019-12-07 11:39:19,903 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 11:39:19,903 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:39:19,903 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:39:19,904 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:39:19,904 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:39:18" (3/4) ... [2019-12-07 11:39:19,907 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 11:39:19,913 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2019-12-07 11:39:19,913 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-12-07 11:39:19,916 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-12-07 11:39:19,916 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 11:39:19,917 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 11:39:19,948 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3347b080-f215-4052-9361-9cf3656bdca8/bin/utaipan/witness.graphml [2019-12-07 11:39:19,948 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:39:19,949 INFO L168 Benchmark]: Toolchain (without parser) took 2071.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 937.0 MB in the beginning and 1.1 GB in the end (delta: -116.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:39:19,950 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:39:19,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 937.0 MB in the beginning and 1.1 GB in the end (delta: -135.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-12-07 11:39:19,951 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 11:39:19,951 INFO L168 Benchmark]: Boogie Preprocessor took 19.77 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 11:39:19,952 INFO L168 Benchmark]: RCFGBuilder took 246.78 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: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. [2019-12-07 11:39:19,952 INFO L168 Benchmark]: TraceAbstraction took 1376.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -21.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:39:19,952 INFO L168 Benchmark]: Witness Printer took 44.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 11:39:19,955 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 350.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 937.0 MB in the beginning and 1.1 GB in the end (delta: -135.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.77 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 246.78 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: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1376.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -21.0 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 44.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.6s, 72 ProgramPointsBefore, 45 ProgramPointsAfterwards, 87 TransitionsBefore, 59 TransitionsAfterwards, 2160 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 686 VarBasedMoverChecksPositive, 97 VarBasedMoverChecksNegative, 75 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 4147 CheckedPairsTotal, 38 TotalNumberOfCompositions - PositiveResult [Line: 702]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 66 locations, 2 error locations. Result: SAFE, OverallTime: 1.3s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 367 SDtfs, 133 SDslu, 141 SDs, 0 SdLazy, 82 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=509occurred 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, 7 MinimizatonAttempts, 22 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 2127 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...