./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_edba00ba-3b66-49ff-99b0-c54270239f7d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_edba00ba-3b66-49ff-99b0-c54270239f7d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_edba00ba-3b66-49ff-99b0-c54270239f7d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_edba00ba-3b66-49ff-99b0-c54270239f7d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_edba00ba-3b66-49ff-99b0-c54270239f7d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_edba00ba-3b66-49ff-99b0-c54270239f7d/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 72b5cfc065b99dee03c9feb5080303d7e06155db ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:58:42,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:58:42,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:58:42,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:58:42,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:58:42,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:58:42,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:58:42,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:58:42,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:58:42,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:58:42,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:58:42,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:58:42,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:58:42,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:58:42,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:58:42,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:58:42,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:58:42,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:58:42,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:58:42,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:58:42,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:58:42,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:58:42,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:58:42,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:58:42,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:58:42,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:58:42,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:58:42,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:58:42,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:58:42,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:58:42,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:58:42,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:58:42,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:58:42,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:58:42,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:58:42,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:58:42,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:58:42,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:58:42,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:58:42,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:58:42,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:58:42,757 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_edba00ba-3b66-49ff-99b0-c54270239f7d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:58:42,788 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:58:42,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:58:42,793 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:58:42,793 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:58:42,793 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:58:42,794 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:58:42,794 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:58:42,794 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:58:42,794 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:58:42,795 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:58:42,796 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:58:42,796 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:58:42,796 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:58:42,796 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:58:42,797 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:58:42,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:58:42,798 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:58:42,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:58:42,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:58:42,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:58:42,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:58:42,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:58:42,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:58:42,799 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:58:42,799 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:58:42,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:58:42,800 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:58:42,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:58:42,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:58:42,802 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:58:42,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:58:42,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:58:42,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:58:42,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:58:42,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:58:42,804 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:58:42,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:58:42,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:58:42,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:58:42,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:58:42,805 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_edba00ba-3b66-49ff-99b0-c54270239f7d/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_edba00ba-3b66-49ff-99b0-c54270239f7d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72b5cfc065b99dee03c9feb5080303d7e06155db [2020-11-22 12:58:43,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:58:43,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:58:43,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:58:43,106 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:58:43,107 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:58:43,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_edba00ba-3b66-49ff-99b0-c54270239f7d/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i [2020-11-22 12:58:43,193 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_edba00ba-3b66-49ff-99b0-c54270239f7d/bin/utaipan/data/33649f54d/118eb7a783d34bce9a9cf4da3bd82dcd/FLAGe60d81a4f [2020-11-22 12:58:43,813 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:58:43,813 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_edba00ba-3b66-49ff-99b0-c54270239f7d/sv-benchmarks/c/pthread-wmm/safe032_tso.opt.i [2020-11-22 12:58:43,829 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_edba00ba-3b66-49ff-99b0-c54270239f7d/bin/utaipan/data/33649f54d/118eb7a783d34bce9a9cf4da3bd82dcd/FLAGe60d81a4f [2020-11-22 12:58:44,096 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_edba00ba-3b66-49ff-99b0-c54270239f7d/bin/utaipan/data/33649f54d/118eb7a783d34bce9a9cf4da3bd82dcd [2020-11-22 12:58:44,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:58:44,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:58:44,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:58:44,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:58:44,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:58:44,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:58:44" (1/1) ... [2020-11-22 12:58:44,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc83903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:44, skipping insertion in model container [2020-11-22 12:58:44,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:58:44" (1/1) ... [2020-11-22 12:58:44,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:58:44,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:58:44,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:58:44,614 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:58:44,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:58:44,759 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:58:44,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:44 WrapperNode [2020-11-22 12:58:44,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:58:44,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:58:44,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:58:44,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:58:44,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:44" (1/1) ... [2020-11-22 12:58:44,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:44" (1/1) ... [2020-11-22 12:58:44,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:58:44,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:58:44,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:58:44,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:58:44,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:44" (1/1) ... [2020-11-22 12:58:44,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:44" (1/1) ... [2020-11-22 12:58:44,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:44" (1/1) ... [2020-11-22 12:58:44,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:44" (1/1) ... [2020-11-22 12:58:44,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:44" (1/1) ... [2020-11-22 12:58:44,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:44" (1/1) ... [2020-11-22 12:58:44,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:44" (1/1) ... [2020-11-22 12:58:44,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:58:44,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:58:44,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:58:44,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:58:44,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_edba00ba-3b66-49ff-99b0-c54270239f7d/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:58:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:58:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-22 12:58:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:58:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:58:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-22 12:58:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-22 12:58:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-22 12:58:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-22 12:58:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-22 12:58:44,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-22 12:58:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:58:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-22 12:58:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:58:44,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:58:44,950 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-22 12:58:45,356 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:58:45,356 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-22 12:58:45,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:58:45 BoogieIcfgContainer [2020-11-22 12:58:45,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:58:45,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:58:45,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:58:45,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:58:45,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:58:44" (1/3) ... [2020-11-22 12:58:45,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62591c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:58:45, skipping insertion in model container [2020-11-22 12:58:45,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:44" (2/3) ... [2020-11-22 12:58:45,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62591c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:58:45, skipping insertion in model container [2020-11-22 12:58:45,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:58:45" (3/3) ... [2020-11-22 12:58:45,370 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.opt.i [2020-11-22 12:58:45,380 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-22 12:58:45,381 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:58:45,384 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:58:45,385 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-22 12:58:45,414 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,415 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,415 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,415 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,416 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,416 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,416 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,417 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,417 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,417 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,417 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,418 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,418 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,418 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,418 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,419 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,419 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,419 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,421 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,422 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,422 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,422 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,427 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,427 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,427 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,428 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,434 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,434 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,434 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,434 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:58:45,436 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-22 12:58:45,448 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-22 12:58:45,468 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:58:45,468 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:58:45,469 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:58:45,469 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:58:45,469 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:58:45,469 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:58:45,469 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:58:45,469 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:58:45,481 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-22 12:58:45,483 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-22 12:58:45,486 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-22 12:58:45,487 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-22 12:58:45,529 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-22 12:58:45,529 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-22 12:58:45,533 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-22 12:58:45,536 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-22 12:58:47,852 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-11-22 12:58:48,076 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-11-22 12:58:48,486 INFO L131 LiptonReduction]: Checked pairs total: 2833 [2020-11-22 12:58:48,487 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-11-22 12:58:48,492 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-11-22 12:58:48,522 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-22 12:58:48,524 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-22 12:58:48,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:58:48,530 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:48,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:58:48,531 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:48,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:48,535 INFO L82 PathProgramCache]: Analyzing trace with hash -618309236, now seen corresponding path program 1 times [2020-11-22 12:58:48,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:48,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277147632] [2020-11-22 12:58:48,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:48,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:48,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277147632] [2020-11-22 12:58:48,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:48,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 12:58:48,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237737277] [2020-11-22 12:58:48,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:58:48,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:48,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:58:48,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:58:48,789 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-22 12:58:48,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:48,863 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-11-22 12:58:48,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:58:48,865 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-22 12:58:48,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:48,885 INFO L225 Difference]: With dead ends: 294 [2020-11-22 12:58:48,886 INFO L226 Difference]: Without dead ends: 230 [2020-11-22 12:58:48,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:58:48,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-11-22 12:58:48,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-11-22 12:58:48,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-22 12:58:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-11-22 12:58:49,009 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-11-22 12:58:49,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:49,011 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-11-22 12:58:49,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:58:49,012 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-11-22 12:58:49,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 12:58:49,014 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:49,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:58:49,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:58:49,021 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:49,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:49,024 INFO L82 PathProgramCache]: Analyzing trace with hash -2017712009, now seen corresponding path program 1 times [2020-11-22 12:58:49,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:49,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384436223] [2020-11-22 12:58:49,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:49,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:49,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384436223] [2020-11-22 12:58:49,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:49,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:58:49,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911706974] [2020-11-22 12:58:49,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:58:49,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:49,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:58:49,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:58:49,149 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-11-22 12:58:49,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:49,171 INFO L93 Difference]: Finished difference Result 326 states and 861 transitions. [2020-11-22 12:58:49,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:58:49,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-22 12:58:49,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:49,175 INFO L225 Difference]: With dead ends: 326 [2020-11-22 12:58:49,175 INFO L226 Difference]: Without dead ends: 254 [2020-11-22 12:58:49,176 INFO L677 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 [2020-11-22 12:58:49,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-11-22 12:58:49,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 218. [2020-11-22 12:58:49,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-22 12:58:49,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 576 transitions. [2020-11-22 12:58:49,193 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 576 transitions. Word has length 9 [2020-11-22 12:58:49,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:49,194 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 576 transitions. [2020-11-22 12:58:49,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:58:49,194 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 576 transitions. [2020-11-22 12:58:49,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 12:58:49,195 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:49,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:58:49,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:58:49,196 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:49,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:49,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1987739380, now seen corresponding path program 1 times [2020-11-22 12:58:49,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:49,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829520516] [2020-11-22 12:58:49,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:49,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:49,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829520516] [2020-11-22 12:58:49,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:49,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 12:58:49,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478600981] [2020-11-22 12:58:49,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:58:49,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:49,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:58:49,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:58:49,267 INFO L87 Difference]: Start difference. First operand 218 states and 576 transitions. Second operand 3 states. [2020-11-22 12:58:49,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:49,276 INFO L93 Difference]: Finished difference Result 194 states and 494 transitions. [2020-11-22 12:58:49,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:58:49,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-22 12:58:49,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:49,279 INFO L225 Difference]: With dead ends: 194 [2020-11-22 12:58:49,279 INFO L226 Difference]: Without dead ends: 170 [2020-11-22 12:58:49,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:58:49,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-11-22 12:58:49,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-11-22 12:58:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-11-22 12:58:49,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 440 transitions. [2020-11-22 12:58:49,297 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 440 transitions. Word has length 9 [2020-11-22 12:58:49,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:49,298 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 440 transitions. [2020-11-22 12:58:49,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:58:49,298 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 440 transitions. [2020-11-22 12:58:49,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:58:49,303 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:49,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:58:49,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:58:49,303 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:49,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:49,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1991682187, now seen corresponding path program 1 times [2020-11-22 12:58:49,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:49,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444831955] [2020-11-22 12:58:49,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:49,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:49,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444831955] [2020-11-22 12:58:49,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:49,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:58:49,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035701465] [2020-11-22 12:58:49,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:58:49,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:49,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:58:49,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:58:49,361 INFO L87 Difference]: Start difference. First operand 170 states and 440 transitions. Second operand 4 states. [2020-11-22 12:58:49,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:49,407 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-11-22 12:58:49,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:58:49,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-22 12:58:49,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:49,410 INFO L225 Difference]: With dead ends: 218 [2020-11-22 12:58:49,411 INFO L226 Difference]: Without dead ends: 146 [2020-11-22 12:58:49,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:58:49,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-22 12:58:49,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-22 12:58:49,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-22 12:58:49,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-11-22 12:58:49,430 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 11 [2020-11-22 12:58:49,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:49,430 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-11-22 12:58:49,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:58:49,431 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-11-22 12:58:49,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:58:49,432 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:49,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:58:49,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:58:49,433 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:49,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:49,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1991064667, now seen corresponding path program 2 times [2020-11-22 12:58:49,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:49,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512638596] [2020-11-22 12:58:49,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:49,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512638596] [2020-11-22 12:58:49,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:49,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 12:58:49,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434519444] [2020-11-22 12:58:49,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:58:49,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:49,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:58:49,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:58:49,478 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-11-22 12:58:49,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:49,486 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-11-22 12:58:49,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:58:49,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-22 12:58:49,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:49,489 INFO L225 Difference]: With dead ends: 144 [2020-11-22 12:58:49,489 INFO L226 Difference]: Without dead ends: 144 [2020-11-22 12:58:49,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:58:49,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-22 12:58:49,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-11-22 12:58:49,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-22 12:58:49,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-11-22 12:58:49,496 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-11-22 12:58:49,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:49,496 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-11-22 12:58:49,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:58:49,496 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-11-22 12:58:49,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 12:58:49,497 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:49,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:58:49,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:58:49,498 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:49,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:49,498 INFO L82 PathProgramCache]: Analyzing trace with hash 659418087, now seen corresponding path program 1 times [2020-11-22 12:58:49,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:49,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335349003] [2020-11-22 12:58:49,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:49,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:49,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335349003] [2020-11-22 12:58:49,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:49,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:58:49,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381800687] [2020-11-22 12:58:49,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:58:49,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:49,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:58:49,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:58:49,590 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-11-22 12:58:49,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:49,625 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-11-22 12:58:49,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:58:49,626 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-22 12:58:49,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:49,627 INFO L225 Difference]: With dead ends: 164 [2020-11-22 12:58:49,627 INFO L226 Difference]: Without dead ends: 124 [2020-11-22 12:58:49,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:58:49,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-22 12:58:49,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-11-22 12:58:49,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-22 12:58:49,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-11-22 12:58:49,635 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-11-22 12:58:49,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:49,635 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-11-22 12:58:49,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:58:49,635 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-11-22 12:58:49,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 12:58:49,639 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:49,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:58:49,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:58:49,639 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:49,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:49,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1069248817, now seen corresponding path program 1 times [2020-11-22 12:58:49,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:49,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587164223] [2020-11-22 12:58:49,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:49,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:49,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587164223] [2020-11-22 12:58:49,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:49,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:58:49,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775276534] [2020-11-22 12:58:49,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:58:49,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:49,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:58:49,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:58:49,723 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-11-22 12:58:49,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:49,781 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-11-22 12:58:49,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:58:49,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-22 12:58:49,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:49,783 INFO L225 Difference]: With dead ends: 122 [2020-11-22 12:58:49,783 INFO L226 Difference]: Without dead ends: 97 [2020-11-22 12:58:49,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:58:49,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-22 12:58:49,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-22 12:58:49,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-22 12:58:49,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-11-22 12:58:49,787 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-11-22 12:58:49,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:49,787 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-11-22 12:58:49,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:58:49,787 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-11-22 12:58:49,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 12:58:49,788 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:49,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:58:49,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 12:58:49,788 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:49,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:49,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1390045438, now seen corresponding path program 1 times [2020-11-22 12:58:49,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:49,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643892865] [2020-11-22 12:58:49,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:49,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643892865] [2020-11-22 12:58:49,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:49,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:58:49,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139589724] [2020-11-22 12:58:49,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:58:49,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:49,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:58:49,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:58:49,835 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-11-22 12:58:49,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:49,850 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-11-22 12:58:49,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:58:49,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-22 12:58:49,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:49,851 INFO L225 Difference]: With dead ends: 115 [2020-11-22 12:58:49,851 INFO L226 Difference]: Without dead ends: 98 [2020-11-22 12:58:49,852 INFO L677 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 [2020-11-22 12:58:49,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-22 12:58:49,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-11-22 12:58:49,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-22 12:58:49,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-11-22 12:58:49,855 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-11-22 12:58:49,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:49,856 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-11-22 12:58:49,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:58:49,856 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-11-22 12:58:49,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 12:58:49,856 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:49,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:58:49,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 12:58:49,857 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:49,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:49,857 INFO L82 PathProgramCache]: Analyzing trace with hash 836357957, now seen corresponding path program 1 times [2020-11-22 12:58:49,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:49,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365082702] [2020-11-22 12:58:49,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:49,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:49,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365082702] [2020-11-22 12:58:49,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:49,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:58:49,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52066630] [2020-11-22 12:58:49,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:58:49,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:49,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:58:49,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:58:49,957 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 6 states. [2020-11-22 12:58:50,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:50,065 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-11-22 12:58:50,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:58:50,065 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-22 12:58:50,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:50,066 INFO L225 Difference]: With dead ends: 92 [2020-11-22 12:58:50,066 INFO L226 Difference]: Without dead ends: 36 [2020-11-22 12:58:50,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:58:50,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-22 12:58:50,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-22 12:58:50,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-22 12:58:50,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-11-22 12:58:50,067 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-11-22 12:58:50,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:50,067 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-11-22 12:58:50,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:58:50,068 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-11-22 12:58:50,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:58:50,068 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:50,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:58:50,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 12:58:50,068 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:50,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:50,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1235317196, now seen corresponding path program 1 times [2020-11-22 12:58:50,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:50,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078634002] [2020-11-22 12:58:50,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:50,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:50,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078634002] [2020-11-22 12:58:50,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:50,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:58:50,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929060233] [2020-11-22 12:58:50,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:58:50,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:50,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:58:50,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:58:50,129 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-11-22 12:58:50,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:50,156 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-11-22 12:58:50,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:58:50,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-22 12:58:50,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:50,157 INFO L225 Difference]: With dead ends: 35 [2020-11-22 12:58:50,157 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:58:50,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:58:50,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:58:50,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:58:50,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:58:50,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:58:50,158 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-22 12:58:50,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:50,158 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:58:50,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:58:50,158 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:58:50,158 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:58:50,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-22 12:58:50,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:58:50 BasicIcfg [2020-11-22 12:58:50,161 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:58:50,162 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:58:50,162 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:58:50,162 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:58:50,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:58:45" (3/4) ... [2020-11-22 12:58:50,165 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:58:50,174 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-22 12:58:50,174 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-22 12:58:50,174 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-22 12:58:50,181 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-22 12:58:50,181 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 12:58:50,181 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:58:50,181 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:58:50,245 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_edba00ba-3b66-49ff-99b0-c54270239f7d/bin/utaipan/witness.graphml [2020-11-22 12:58:50,245 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:58:50,247 INFO L168 Benchmark]: Toolchain (without parser) took 6145.82 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 72.6 MB in the beginning and 112.0 MB in the end (delta: -39.4 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:50,247 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 75.5 MB. Free memory was 34.9 MB in the beginning and 34.9 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:58:50,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 658.18 ms. Allocated memory is still 107.0 MB. Free memory was 72.4 MB in the beginning and 62.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:50,248 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.99 ms. Allocated memory is still 107.0 MB. Free memory was 62.0 MB in the beginning and 60.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:50,248 INFO L168 Benchmark]: Boogie Preprocessor took 61.71 ms. Allocated memory is still 107.0 MB. Free memory was 60.0 MB in the beginning and 59.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:58:50,249 INFO L168 Benchmark]: RCFGBuilder took 493.61 ms. Allocated memory is still 107.0 MB. Free memory was 58.4 MB in the beginning and 83.3 MB in the end (delta: -24.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:50,249 INFO L168 Benchmark]: TraceAbstraction took 4801.37 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 82.6 MB in the beginning and 115.1 MB in the end (delta: -32.5 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:50,250 INFO L168 Benchmark]: Witness Printer took 83.55 ms. Allocated memory is still 157.3 MB. Free memory was 115.1 MB in the beginning and 112.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:50,252 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 75.5 MB. Free memory was 34.9 MB in the beginning and 34.9 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 658.18 ms. Allocated memory is still 107.0 MB. Free memory was 72.4 MB in the beginning and 62.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.99 ms. Allocated memory is still 107.0 MB. Free memory was 62.0 MB in the beginning and 60.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.71 ms. Allocated memory is still 107.0 MB. Free memory was 60.0 MB in the beginning and 59.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 493.61 ms. Allocated memory is still 107.0 MB. Free memory was 58.4 MB in the beginning and 83.3 MB in the end (delta: -24.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4801.37 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 82.6 MB in the beginning and 115.1 MB in the end (delta: -32.5 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. * Witness Printer took 83.55 ms. Allocated memory is still 157.3 MB. Free memory was 115.1 MB in the beginning and 112.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 978 VarBasedMoverChecksPositive, 63 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 45 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 74 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.0s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 71 TotalNumberOfCompositions, 2833 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 178 SDtfs, 169 SDslu, 163 SDs, 0 SdLazy, 84 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 38 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 3069 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...