./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe036_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_00a36430-8922-4610-a93f-ba36ef0a9cc1/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_00a36430-8922-4610-a93f-ba36ef0a9cc1/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_00a36430-8922-4610-a93f-ba36ef0a9cc1/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_00a36430-8922-4610-a93f-ba36ef0a9cc1/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe036_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_00a36430-8922-4610-a93f-ba36ef0a9cc1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_00a36430-8922-4610-a93f-ba36ef0a9cc1/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 5efd8360950fd3238a6a91e0d0d6ad54c0af588e .......................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:18:18,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:18:18,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:18:18,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:18:18,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:18:18,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:18:18,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:18:18,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:18:18,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:18:18,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:18:18,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:18:18,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:18:18,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:18:18,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:18:18,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:18:18,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:18:18,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:18:18,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:18:18,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:18:18,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:18:18,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:18:18,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:18:18,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:18:18,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:18:18,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:18:18,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:18:18,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:18:18,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:18:18,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:18:18,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:18:18,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:18:18,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:18:18,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:18:18,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:18:18,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:18:18,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:18:18,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:18:18,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:18:18,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:18:18,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:18:18,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:18:18,689 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_00a36430-8922-4610-a93f-ba36ef0a9cc1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:18:18,713 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:18:18,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:18:18,724 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:18:18,724 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:18:18,724 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:18:18,724 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:18:18,725 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:18:18,725 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:18:18,725 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:18:18,725 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:18:18,725 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:18:18,726 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:18:18,726 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:18:18,726 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:18:18,726 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:18:18,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:18:18,728 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:18:18,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:18:18,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:18:18,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:18:18,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:18:18,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:18:18,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:18:18,729 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:18:18,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:18:18,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:18:18,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:18:18,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:18:18,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:18:18,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:18:18,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:18:18,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:18:18,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:18:18,732 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:18:18,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:18:18,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:18:18,732 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:18:18,733 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_00a36430-8922-4610-a93f-ba36ef0a9cc1/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 -> 5efd8360950fd3238a6a91e0d0d6ad54c0af588e [2019-11-26 02:18:18,865 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:18:18,877 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:18:18,879 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:18:18,884 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:18:18,884 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:18:18,885 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_00a36430-8922-4610-a93f-ba36ef0a9cc1/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe036_tso.oepc.i [2019-11-26 02:18:18,939 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_00a36430-8922-4610-a93f-ba36ef0a9cc1/bin/utaipan/data/a168414ed/d9aabde76a964ead8a5788a633dac892/FLAG13715813a [2019-11-26 02:18:19,437 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:18:19,438 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_00a36430-8922-4610-a93f-ba36ef0a9cc1/sv-benchmarks/c/pthread-wmm/safe036_tso.oepc.i [2019-11-26 02:18:19,455 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_00a36430-8922-4610-a93f-ba36ef0a9cc1/bin/utaipan/data/a168414ed/d9aabde76a964ead8a5788a633dac892/FLAG13715813a [2019-11-26 02:18:19,729 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_00a36430-8922-4610-a93f-ba36ef0a9cc1/bin/utaipan/data/a168414ed/d9aabde76a964ead8a5788a633dac892 [2019-11-26 02:18:19,731 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:18:19,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:18:19,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:18:19,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:18:19,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:18:19,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:18:19" (1/1) ... [2019-11-26 02:18:19,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@599dd39d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:19, skipping insertion in model container [2019-11-26 02:18:19,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:18:19" (1/1) ... [2019-11-26 02:18:19,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:18:19,792 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:18:20,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:18:20,237 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:18:20,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:18:20,368 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:18:20,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:20 WrapperNode [2019-11-26 02:18:20,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:18:20,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:18:20,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:18:20,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:18:20,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:20" (1/1) ... [2019-11-26 02:18:20,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:20" (1/1) ... [2019-11-26 02:18:20,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:18:20,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:18:20,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:18:20,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:18:20,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:20" (1/1) ... [2019-11-26 02:18:20,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:20" (1/1) ... [2019-11-26 02:18:20,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:20" (1/1) ... [2019-11-26 02:18:20,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:20" (1/1) ... [2019-11-26 02:18:20,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:20" (1/1) ... [2019-11-26 02:18:20,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:20" (1/1) ... [2019-11-26 02:18:20,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:20" (1/1) ... [2019-11-26 02:18:20,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:18:20,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:18:20,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:18:20,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:18:20,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00a36430-8922-4610-a93f-ba36ef0a9cc1/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:18:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:18:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-26 02:18:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:18:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:18:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-26 02:18:20,509 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-26 02:18:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-26 02:18:20,509 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-26 02:18:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-26 02:18:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:18:20,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:18:20,511 WARN L202 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-26 02:18:20,819 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:18:20,820 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 02:18:20,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:18:20 BoogieIcfgContainer [2019-11-26 02:18:20,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:18:20,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:18:20,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:18:20,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:18:20,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:18:19" (1/3) ... [2019-11-26 02:18:20,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@362d788c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:18:20, skipping insertion in model container [2019-11-26 02:18:20,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:18:20" (2/3) ... [2019-11-26 02:18:20,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@362d788c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:18:20, skipping insertion in model container [2019-11-26 02:18:20,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:18:20" (3/3) ... [2019-11-26 02:18:20,827 INFO L109 eAbstractionObserver]: Analyzing ICFG safe036_tso.oepc.i [2019-11-26 02:18:20,862 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,863 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,863 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,863 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,863 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,863 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,864 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,864 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,864 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,864 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,864 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,865 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,865 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,865 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,865 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,865 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,866 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,866 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,866 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,866 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,867 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,867 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,867 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,867 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,867 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,868 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,868 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,868 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,868 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,868 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,869 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,869 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,869 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,869 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,869 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,869 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:18:20,891 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 02:18:20,892 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:18:20,897 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:18:20,904 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:18:20,919 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:18:20,919 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:18:20,920 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:18:20,920 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:18:20,920 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:18:20,920 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:18:20,920 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:18:20,920 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:18:20,928 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 57 transitions [2019-11-26 02:18:20,974 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 287 states. [2019-11-26 02:18:20,976 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states. [2019-11-26 02:18:20,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-26 02:18:20,986 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:18:20,987 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:18:20,987 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:18:20,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:18:20,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1002264270, now seen corresponding path program 1 times [2019-11-26 02:18:20,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:18:21,000 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061956800] [2019-11-26 02:18:21,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:18:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:18:21,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:18:21,268 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061956800] [2019-11-26 02:18:21,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:18:21,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:18:21,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720419118] [2019-11-26 02:18:21,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:18:21,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:18:21,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:18:21,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:18:21,290 INFO L87 Difference]: Start difference. First operand 287 states. Second operand 4 states. [2019-11-26 02:18:21,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:18:21,356 INFO L93 Difference]: Finished difference Result 288 states and 647 transitions. [2019-11-26 02:18:21,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:18:21,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-11-26 02:18:21,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:18:21,373 INFO L225 Difference]: With dead ends: 288 [2019-11-26 02:18:21,376 INFO L226 Difference]: Without dead ends: 152 [2019-11-26 02:18:21,377 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:18:21,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-26 02:18:21,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2019-11-26 02:18:21,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-11-26 02:18:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 326 transitions. [2019-11-26 02:18:21,424 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 326 transitions. Word has length 26 [2019-11-26 02:18:21,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:18:21,424 INFO L462 AbstractCegarLoop]: Abstraction has 152 states and 326 transitions. [2019-11-26 02:18:21,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:18:21,425 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 326 transitions. [2019-11-26 02:18:21,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-26 02:18:21,427 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:18:21,427 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:18:21,427 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:18:21,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:18:21,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1076917334, now seen corresponding path program 1 times [2019-11-26 02:18:21,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:18:21,434 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274359598] [2019-11-26 02:18:21,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:18:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:18:21,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:18:21,575 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274359598] [2019-11-26 02:18:21,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:18:21,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:18:21,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192223783] [2019-11-26 02:18:21,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:18:21,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:18:21,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:18:21,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:18:21,578 INFO L87 Difference]: Start difference. First operand 152 states and 326 transitions. Second operand 5 states. [2019-11-26 02:18:21,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:18:21,644 INFO L93 Difference]: Finished difference Result 125 states and 242 transitions. [2019-11-26 02:18:21,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:18:21,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-11-26 02:18:21,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:18:21,650 INFO L225 Difference]: With dead ends: 125 [2019-11-26 02:18:21,650 INFO L226 Difference]: Without dead ends: 110 [2019-11-26 02:18:21,651 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:18:21,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-11-26 02:18:21,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2019-11-26 02:18:21,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-11-26 02:18:21,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 214 transitions. [2019-11-26 02:18:21,675 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 214 transitions. Word has length 27 [2019-11-26 02:18:21,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:18:21,676 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 214 transitions. [2019-11-26 02:18:21,676 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:18:21,676 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 214 transitions. [2019-11-26 02:18:21,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-26 02:18:21,678 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:18:21,678 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:18:21,679 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:18:21,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:18:21,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1198424208, now seen corresponding path program 1 times [2019-11-26 02:18:21,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:18:21,680 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641655819] [2019-11-26 02:18:21,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:18:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:18:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:18:21,860 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641655819] [2019-11-26 02:18:21,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:18:21,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:18:21,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375414223] [2019-11-26 02:18:21,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:18:21,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:18:21,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:18:21,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:18:21,862 INFO L87 Difference]: Start difference. First operand 110 states and 214 transitions. Second operand 7 states. [2019-11-26 02:18:22,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:18:22,011 INFO L93 Difference]: Finished difference Result 164 states and 331 transitions. [2019-11-26 02:18:22,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:18:22,012 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2019-11-26 02:18:22,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:18:22,013 INFO L225 Difference]: With dead ends: 164 [2019-11-26 02:18:22,013 INFO L226 Difference]: Without dead ends: 95 [2019-11-26 02:18:22,014 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:18:22,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-11-26 02:18:22,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2019-11-26 02:18:22,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-11-26 02:18:22,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 184 transitions. [2019-11-26 02:18:22,030 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 184 transitions. Word has length 28 [2019-11-26 02:18:22,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:18:22,031 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 184 transitions. [2019-11-26 02:18:22,031 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:18:22,031 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 184 transitions. [2019-11-26 02:18:22,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-26 02:18:22,037 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:18:22,038 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:18:22,039 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:18:22,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:18:22,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1381907074, now seen corresponding path program 2 times [2019-11-26 02:18:22,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:18:22,041 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864851564] [2019-11-26 02:18:22,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:18:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:18:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:18:22,181 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864851564] [2019-11-26 02:18:22,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:18:22,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:18:22,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988443891] [2019-11-26 02:18:22,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:18:22,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:18:22,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:18:22,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:18:22,183 INFO L87 Difference]: Start difference. First operand 95 states and 184 transitions. Second operand 7 states. [2019-11-26 02:18:22,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:18:22,287 INFO L93 Difference]: Finished difference Result 77 states and 142 transitions. [2019-11-26 02:18:22,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:18:22,287 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2019-11-26 02:18:22,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:18:22,288 INFO L225 Difference]: With dead ends: 77 [2019-11-26 02:18:22,288 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:18:22,289 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:18:22,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:18:22,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:18:22,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:18:22,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:18:22,289 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2019-11-26 02:18:22,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:18:22,290 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:18:22,290 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:18:22,290 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:18:22,290 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:18:22,295 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-26 02:18:22,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:18:22 BasicIcfg [2019-11-26 02:18:22,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:18:22,297 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:18:22,298 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:18:22,298 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:18:22,298 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:18:20" (3/4) ... [2019-11-26 02:18:22,302 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:18:22,309 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-26 02:18:22,309 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-26 02:18:22,316 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-11-26 02:18:22,316 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:18:22,316 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:18:22,378 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_00a36430-8922-4610-a93f-ba36ef0a9cc1/bin/utaipan/witness.graphml [2019-11-26 02:18:22,378 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:18:22,385 INFO L168 Benchmark]: Toolchain (without parser) took 2648.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 940.7 MB in the beginning and 969.0 MB in the end (delta: -28.3 MB). Peak memory consumption was 126.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:18:22,385 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:18:22,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -176.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:18:22,386 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:18:22,387 INFO L168 Benchmark]: Boogie Preprocessor took 38.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:18:22,387 INFO L168 Benchmark]: RCFGBuilder took 369.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:18:22,388 INFO L168 Benchmark]: TraceAbstraction took 1475.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 975.7 MB in the end (delta: 113.8 MB). Peak memory consumption was 113.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:18:22,388 INFO L168 Benchmark]: Witness Printer took 80.98 ms. Allocated memory is still 1.2 GB. Free memory was 975.7 MB in the beginning and 969.0 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:18:22,390 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 637.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -176.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 369.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1475.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 975.7 MB in the end (delta: 113.8 MB). Peak memory consumption was 113.8 MB. Max. memory is 11.5 GB. * Witness Printer took 80.98 ms. Allocated memory is still 1.2 GB. Free memory was 975.7 MB in the beginning and 969.0 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 67 locations, 1 error locations. Result: SAFE, OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 155 SDtfs, 148 SDslu, 400 SDs, 0 SdLazy, 58 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=287occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 7383 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...