./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3589fc76-3023-4c08-aa48-d922a33bef60/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3589fc76-3023-4c08-aa48-d922a33bef60/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3589fc76-3023-4c08-aa48-d922a33bef60/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3589fc76-3023-4c08-aa48-d922a33bef60/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3589fc76-3023-4c08-aa48-d922a33bef60/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3589fc76-3023-4c08-aa48-d922a33bef60/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 fa3e2ddd2156ae746a75cc70eab9b6ff4fc79271 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 05:18:30,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:18:30,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:18:30,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:18:30,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:18:30,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:18:30,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:18:30,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:18:30,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:18:30,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:18:30,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:18:30,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:18:30,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:18:30,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:18:30,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:18:30,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:18:30,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:18:30,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:18:30,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:18:30,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:18:30,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:18:30,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:18:30,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:18:30,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:18:30,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:18:30,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:18:30,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:18:30,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:18:30,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:18:30,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:18:30,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:18:30,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:18:30,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:18:30,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:18:30,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:18:30,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:18:30,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:18:30,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:18:30,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:18:30,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:18:30,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:18:30,664 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3589fc76-3023-4c08-aa48-d922a33bef60/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 05:18:30,685 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:18:30,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:18:30,686 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:18:30,686 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:18:30,686 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:18:30,686 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:18:30,686 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:18:30,686 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:18:30,686 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:18:30,686 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:18:30,687 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:18:30,687 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:18:30,687 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:18:30,687 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:18:30,687 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:18:30,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:18:30,688 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:18:30,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:18:30,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:18:30,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:18:30,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:18:30,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:18:30,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:18:30,688 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:18:30,689 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:18:30,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:18:30,689 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:18:30,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:18:30,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:18:30,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:18:30,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:18:30,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:18:30,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:18:30,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:18:30,690 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:18:30,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:18:30,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:18:30,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:18:30,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:18:30,690 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_3589fc76-3023-4c08-aa48-d922a33bef60/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3589fc76-3023-4c08-aa48-d922a33bef60/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa3e2ddd2156ae746a75cc70eab9b6ff4fc79271 [2020-12-09 05:18:30,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:18:30,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:18:30,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:18:30,884 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:18:30,885 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:18:30,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3589fc76-3023-4c08-aa48-d922a33bef60/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i [2020-12-09 05:18:30,925 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3589fc76-3023-4c08-aa48-d922a33bef60/bin/utaipan/data/079d67f91/b9ab909ff5464661b9fd3de5ed1effe3/FLAGa8dc8b0bf [2020-12-09 05:18:31,330 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:18:31,331 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3589fc76-3023-4c08-aa48-d922a33bef60/sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i [2020-12-09 05:18:31,345 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3589fc76-3023-4c08-aa48-d922a33bef60/bin/utaipan/data/079d67f91/b9ab909ff5464661b9fd3de5ed1effe3/FLAGa8dc8b0bf [2020-12-09 05:18:31,356 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3589fc76-3023-4c08-aa48-d922a33bef60/bin/utaipan/data/079d67f91/b9ab909ff5464661b9fd3de5ed1effe3 [2020-12-09 05:18:31,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:18:31,359 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:18:31,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:18:31,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:18:31,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:18:31,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:18:31" (1/1) ... [2020-12-09 05:18:31,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b40a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:18:31, skipping insertion in model container [2020-12-09 05:18:31,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:18:31" (1/1) ... [2020-12-09 05:18:31,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:18:31,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:18:31,527 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_3589fc76-3023-4c08-aa48-d922a33bef60/sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i[950,963] [2020-12-09 05:18:31,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:18:31,630 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:18:31,638 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_3589fc76-3023-4c08-aa48-d922a33bef60/sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i[950,963] [2020-12-09 05:18:31,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:18:31,713 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:18:31,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:18:31 WrapperNode [2020-12-09 05:18:31,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:18:31,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:18:31,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:18:31,715 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:18:31,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:18:31" (1/1) ... [2020-12-09 05:18:31,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:18:31" (1/1) ... [2020-12-09 05:18:31,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:18:31,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:18:31,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:18:31,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:18:31,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:18:31" (1/1) ... [2020-12-09 05:18:31,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:18:31" (1/1) ... [2020-12-09 05:18:31,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:18:31" (1/1) ... [2020-12-09 05:18:31,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:18:31" (1/1) ... [2020-12-09 05:18:31,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:18:31" (1/1) ... [2020-12-09 05:18:31,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:18:31" (1/1) ... [2020-12-09 05:18:31,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:18:31" (1/1) ... [2020-12-09 05:18:31,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:18:31,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:18:31,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:18:31,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:18:31,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:18:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3589fc76-3023-4c08-aa48-d922a33bef60/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 [2020-12-09 05:18:31,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 05:18:31,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 05:18:31,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:18:31,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 05:18:31,839 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 05:18:31,839 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 05:18:31,839 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 05:18:31,839 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 05:18:31,840 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 05:18:31,840 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 05:18:31,840 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-09 05:18:31,840 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-09 05:18:31,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 05:18:31,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 05:18:31,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:18:31,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:18:31,842 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-09 05:18:32,131 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:18:32,131 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 05:18:32,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:18:32 BoogieIcfgContainer [2020-12-09 05:18:32,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:18:32,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:18:32,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:18:32,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:18:32,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:18:31" (1/3) ... [2020-12-09 05:18:32,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c6184f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:18:32, skipping insertion in model container [2020-12-09 05:18:32,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:18:31" (2/3) ... [2020-12-09 05:18:32,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c6184f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:18:32, skipping insertion in model container [2020-12-09 05:18:32,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:18:32" (3/3) ... [2020-12-09 05:18:32,141 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2020-12-09 05:18:32,154 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 05:18:32,154 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:18:32,158 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 05:18:32,159 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 05:18:32,185 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,185 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,185 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,185 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,186 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,186 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,186 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,186 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,186 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,186 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,187 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,187 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,187 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,187 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,187 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,187 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,188 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,188 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,189 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,189 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,189 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,189 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,189 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,189 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,190 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,190 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,190 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,190 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,190 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,190 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,190 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,191 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,191 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,191 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,191 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,191 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,191 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,191 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,192 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,192 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,192 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,192 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,192 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,192 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,192 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,193 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,194 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,194 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,194 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,198 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,198 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,200 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,200 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,200 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,200 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,202 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,202 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,202 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,202 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:18:32,203 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 05:18:32,211 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-09 05:18:32,226 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:18:32,226 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:18:32,226 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:18:32,226 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:18:32,226 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:18:32,226 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:18:32,227 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:18:32,227 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:18:32,236 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 05:18:32,237 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 91 transitions, 202 flow [2020-12-09 05:18:32,239 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 91 transitions, 202 flow [2020-12-09 05:18:32,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 91 transitions, 202 flow [2020-12-09 05:18:32,273 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2020-12-09 05:18:32,273 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 05:18:32,277 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2020-12-09 05:18:32,280 INFO L116 LiptonReduction]: Number of co-enabled transitions 2064 [2020-12-09 05:18:34,369 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-12-09 05:18:34,610 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-12-09 05:18:34,686 INFO L131 LiptonReduction]: Checked pairs total: 4338 [2020-12-09 05:18:34,686 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-12-09 05:18:34,690 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-12-09 05:18:34,752 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-12-09 05:18:34,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-12-09 05:18:34,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 05:18:34,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:18:34,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:18:34,760 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:18:34,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:18:34,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1256759632, now seen corresponding path program 1 times [2020-12-09 05:18:34,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:18:34,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418016969] [2020-12-09 05:18:34,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:18:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:18:34,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:18:34,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418016969] [2020-12-09 05:18:34,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:18:34,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:18:34,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776203985] [2020-12-09 05:18:34,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 05:18:34,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:18:34,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 05:18:34,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:18:34,915 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-12-09 05:18:34,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:18:34,952 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-12-09 05:18:34,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 05:18:34,953 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-09 05:18:34,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:18:34,973 INFO L225 Difference]: With dead ends: 1450 [2020-12-09 05:18:34,973 INFO L226 Difference]: Without dead ends: 1194 [2020-12-09 05:18:34,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:18:34,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-12-09 05:18:35,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-12-09 05:18:35,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-12-09 05:18:35,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-12-09 05:18:35,059 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-12-09 05:18:35,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:18:35,059 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-12-09 05:18:35,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 05:18:35,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-12-09 05:18:35,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 05:18:35,061 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:18:35,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:18:35,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 05:18:35,061 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:18:35,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:18:35,062 INFO L82 PathProgramCache]: Analyzing trace with hash -304847029, now seen corresponding path program 1 times [2020-12-09 05:18:35,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:18:35,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825114338] [2020-12-09 05:18:35,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:18:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:18:35,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:18:35,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825114338] [2020-12-09 05:18:35,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:18:35,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:18:35,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130547929] [2020-12-09 05:18:35,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:18:35,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:18:35,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:18:35,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:18:35,166 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-12-09 05:18:35,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:18:35,212 INFO L93 Difference]: Finished difference Result 1448 states and 5111 transitions. [2020-12-09 05:18:35,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:18:35,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 05:18:35,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:18:35,221 INFO L225 Difference]: With dead ends: 1448 [2020-12-09 05:18:35,221 INFO L226 Difference]: Without dead ends: 1192 [2020-12-09 05:18:35,222 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 [2020-12-09 05:18:35,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2020-12-09 05:18:35,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1192. [2020-12-09 05:18:35,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-12-09 05:18:35,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 4342 transitions. [2020-12-09 05:18:35,258 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 4342 transitions. Word has length 11 [2020-12-09 05:18:35,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:18:35,258 INFO L481 AbstractCegarLoop]: Abstraction has 1192 states and 4342 transitions. [2020-12-09 05:18:35,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:18:35,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 4342 transitions. [2020-12-09 05:18:35,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 05:18:35,261 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:18:35,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:18:35,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 05:18:35,261 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:18:35,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:18:35,262 INFO L82 PathProgramCache]: Analyzing trace with hash -835567243, now seen corresponding path program 1 times [2020-12-09 05:18:35,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:18:35,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086135369] [2020-12-09 05:18:35,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:18:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:18:35,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:18:35,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086135369] [2020-12-09 05:18:35,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:18:35,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:18:35,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436202964] [2020-12-09 05:18:35,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:18:35,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:18:35,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:18:35,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:18:35,340 INFO L87 Difference]: Start difference. First operand 1192 states and 4342 transitions. Second operand 5 states. [2020-12-09 05:18:35,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:18:35,378 INFO L93 Difference]: Finished difference Result 1318 states and 4624 transitions. [2020-12-09 05:18:35,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:18:35,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 05:18:35,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:18:35,389 INFO L225 Difference]: With dead ends: 1318 [2020-12-09 05:18:35,389 INFO L226 Difference]: Without dead ends: 1066 [2020-12-09 05:18:35,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:18:35,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-12-09 05:18:35,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-12-09 05:18:35,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-12-09 05:18:35,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-12-09 05:18:35,420 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 12 [2020-12-09 05:18:35,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:18:35,420 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-12-09 05:18:35,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:18:35,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-12-09 05:18:35,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 05:18:35,421 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:18:35,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:18:35,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 05:18:35,422 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:18:35,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:18:35,422 INFO L82 PathProgramCache]: Analyzing trace with hash -861902487, now seen corresponding path program 1 times [2020-12-09 05:18:35,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:18:35,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097858239] [2020-12-09 05:18:35,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:18:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:18:35,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:18:35,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097858239] [2020-12-09 05:18:35,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:18:35,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:18:35,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836569013] [2020-12-09 05:18:35,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:18:35,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:18:35,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:18:35,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:18:35,472 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 5 states. [2020-12-09 05:18:35,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:18:35,555 INFO L93 Difference]: Finished difference Result 1819 states and 6368 transitions. [2020-12-09 05:18:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 05:18:35,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 05:18:35,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:18:35,565 INFO L225 Difference]: With dead ends: 1819 [2020-12-09 05:18:35,565 INFO L226 Difference]: Without dead ends: 1276 [2020-12-09 05:18:35,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 05:18:35,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2020-12-09 05:18:35,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1276. [2020-12-09 05:18:35,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-12-09 05:18:35,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 4536 transitions. [2020-12-09 05:18:35,610 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 4536 transitions. Word has length 12 [2020-12-09 05:18:35,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:18:35,610 INFO L481 AbstractCegarLoop]: Abstraction has 1276 states and 4536 transitions. [2020-12-09 05:18:35,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:18:35,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 4536 transitions. [2020-12-09 05:18:35,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 05:18:35,612 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:18:35,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:18:35,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 05:18:35,612 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:18:35,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:18:35,612 INFO L82 PathProgramCache]: Analyzing trace with hash -950335427, now seen corresponding path program 1 times [2020-12-09 05:18:35,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:18:35,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128723840] [2020-12-09 05:18:35,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:18:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:18:35,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:18:35,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128723840] [2020-12-09 05:18:35,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:18:35,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:18:35,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105452556] [2020-12-09 05:18:35,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:18:35,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:18:35,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:18:35,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:18:35,665 INFO L87 Difference]: Start difference. First operand 1276 states and 4536 transitions. Second operand 5 states. [2020-12-09 05:18:35,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:18:35,741 INFO L93 Difference]: Finished difference Result 2281 states and 7855 transitions. [2020-12-09 05:18:35,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 05:18:35,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 05:18:35,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:18:35,753 INFO L225 Difference]: With dead ends: 2281 [2020-12-09 05:18:35,753 INFO L226 Difference]: Without dead ends: 1840 [2020-12-09 05:18:35,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 05:18:35,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2020-12-09 05:18:35,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1264. [2020-12-09 05:18:35,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1264 states. [2020-12-09 05:18:35,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 4447 transitions. [2020-12-09 05:18:35,792 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 4447 transitions. Word has length 13 [2020-12-09 05:18:35,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:18:35,793 INFO L481 AbstractCegarLoop]: Abstraction has 1264 states and 4447 transitions. [2020-12-09 05:18:35,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:18:35,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 4447 transitions. [2020-12-09 05:18:35,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 05:18:35,794 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:18:35,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:18:35,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 05:18:35,794 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:18:35,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:18:35,794 INFO L82 PathProgramCache]: Analyzing trace with hash -950246054, now seen corresponding path program 1 times [2020-12-09 05:18:35,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:18:35,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247903226] [2020-12-09 05:18:35,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:18:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:18:35,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:18:35,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247903226] [2020-12-09 05:18:35,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:18:35,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:18:35,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329701324] [2020-12-09 05:18:35,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:18:35,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:18:35,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:18:35,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:18:35,835 INFO L87 Difference]: Start difference. First operand 1264 states and 4447 transitions. Second operand 5 states. [2020-12-09 05:18:35,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:18:35,865 INFO L93 Difference]: Finished difference Result 1354 states and 4639 transitions. [2020-12-09 05:18:35,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:18:35,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 05:18:35,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:18:35,873 INFO L225 Difference]: With dead ends: 1354 [2020-12-09 05:18:35,873 INFO L226 Difference]: Without dead ends: 1174 [2020-12-09 05:18:35,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:18:35,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2020-12-09 05:18:35,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1084. [2020-12-09 05:18:35,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1084 states. [2020-12-09 05:18:35,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 3766 transitions. [2020-12-09 05:18:35,907 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 3766 transitions. Word has length 13 [2020-12-09 05:18:35,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:18:35,907 INFO L481 AbstractCegarLoop]: Abstraction has 1084 states and 3766 transitions. [2020-12-09 05:18:35,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:18:35,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 3766 transitions. [2020-12-09 05:18:35,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 05:18:35,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:18:35,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:18:35,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 05:18:35,909 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:18:35,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:18:35,909 INFO L82 PathProgramCache]: Analyzing trace with hash 128736516, now seen corresponding path program 1 times [2020-12-09 05:18:35,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:18:35,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082701189] [2020-12-09 05:18:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:18:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:18:35,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:18:35,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082701189] [2020-12-09 05:18:35,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:18:35,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:18:35,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452156753] [2020-12-09 05:18:35,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 05:18:35,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:18:35,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 05:18:35,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:18:35,957 INFO L87 Difference]: Start difference. First operand 1084 states and 3766 transitions. Second operand 6 states. [2020-12-09 05:18:35,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:18:35,998 INFO L93 Difference]: Finished difference Result 1309 states and 4471 transitions. [2020-12-09 05:18:35,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 05:18:35,998 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-09 05:18:35,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:18:36,004 INFO L225 Difference]: With dead ends: 1309 [2020-12-09 05:18:36,004 INFO L226 Difference]: Without dead ends: 682 [2020-12-09 05:18:36,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-09 05:18:36,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-12-09 05:18:36,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2020-12-09 05:18:36,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2020-12-09 05:18:36,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 2240 transitions. [2020-12-09 05:18:36,025 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 2240 transitions. Word has length 14 [2020-12-09 05:18:36,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:18:36,025 INFO L481 AbstractCegarLoop]: Abstraction has 682 states and 2240 transitions. [2020-12-09 05:18:36,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 05:18:36,025 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 2240 transitions. [2020-12-09 05:18:36,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 05:18:36,026 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:18:36,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:18:36,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 05:18:36,026 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:18:36,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:18:36,026 INFO L82 PathProgramCache]: Analyzing trace with hash 100524439, now seen corresponding path program 1 times [2020-12-09 05:18:36,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:18:36,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489677922] [2020-12-09 05:18:36,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:18:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:18:36,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:18:36,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489677922] [2020-12-09 05:18:36,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:18:36,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:18:36,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887743107] [2020-12-09 05:18:36,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 05:18:36,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:18:36,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 05:18:36,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:18:36,070 INFO L87 Difference]: Start difference. First operand 682 states and 2240 transitions. Second operand 6 states. [2020-12-09 05:18:36,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:18:36,106 INFO L93 Difference]: Finished difference Result 874 states and 2784 transitions. [2020-12-09 05:18:36,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 05:18:36,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-09 05:18:36,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:18:36,109 INFO L225 Difference]: With dead ends: 874 [2020-12-09 05:18:36,109 INFO L226 Difference]: Without dead ends: 394 [2020-12-09 05:18:36,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-09 05:18:36,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-12-09 05:18:36,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-12-09 05:18:36,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-12-09 05:18:36,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1168 transitions. [2020-12-09 05:18:36,117 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1168 transitions. Word has length 14 [2020-12-09 05:18:36,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:18:36,117 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1168 transitions. [2020-12-09 05:18:36,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 05:18:36,117 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1168 transitions. [2020-12-09 05:18:36,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 05:18:36,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:18:36,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:18:36,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 05:18:36,118 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:18:36,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:18:36,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1364189748, now seen corresponding path program 1 times [2020-12-09 05:18:36,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:18:36,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800142735] [2020-12-09 05:18:36,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:18:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:18:36,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:18:36,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800142735] [2020-12-09 05:18:36,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:18:36,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:18:36,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481942502] [2020-12-09 05:18:36,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 05:18:36,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:18:36,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 05:18:36,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:18:36,162 INFO L87 Difference]: Start difference. First operand 394 states and 1168 transitions. Second operand 6 states. [2020-12-09 05:18:36,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:18:36,195 INFO L93 Difference]: Finished difference Result 526 states and 1504 transitions. [2020-12-09 05:18:36,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 05:18:36,195 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-09 05:18:36,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:18:36,197 INFO L225 Difference]: With dead ends: 526 [2020-12-09 05:18:36,197 INFO L226 Difference]: Without dead ends: 214 [2020-12-09 05:18:36,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-09 05:18:36,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-12-09 05:18:36,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-12-09 05:18:36,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-12-09 05:18:36,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 566 transitions. [2020-12-09 05:18:36,201 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 566 transitions. Word has length 16 [2020-12-09 05:18:36,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:18:36,201 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 566 transitions. [2020-12-09 05:18:36,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 05:18:36,201 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 566 transitions. [2020-12-09 05:18:36,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 05:18:36,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:18:36,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:18:36,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 05:18:36,202 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:18:36,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:18:36,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1493234184, now seen corresponding path program 1 times [2020-12-09 05:18:36,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:18:36,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416394008] [2020-12-09 05:18:36,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:18:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:18:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:18:36,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416394008] [2020-12-09 05:18:36,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:18:36,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:18:36,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698865182] [2020-12-09 05:18:36,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 05:18:36,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:18:36,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 05:18:36,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:18:36,244 INFO L87 Difference]: Start difference. First operand 214 states and 566 transitions. Second operand 6 states. [2020-12-09 05:18:36,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:18:36,267 INFO L93 Difference]: Finished difference Result 190 states and 490 transitions. [2020-12-09 05:18:36,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 05:18:36,268 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-09 05:18:36,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:18:36,268 INFO L225 Difference]: With dead ends: 190 [2020-12-09 05:18:36,268 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 05:18:36,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-09 05:18:36,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 05:18:36,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 05:18:36,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 05:18:36,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 05:18:36,269 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-09 05:18:36,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:18:36,269 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 05:18:36,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 05:18:36,269 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 05:18:36,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 05:18:36,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 05:18:36,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:18:36 BasicIcfg [2020-12-09 05:18:36,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:18:36,271 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:18:36,271 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:18:36,271 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:18:36,272 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:18:32" (3/4) ... [2020-12-09 05:18:36,274 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 05:18:36,278 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 05:18:36,278 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 05:18:36,278 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 05:18:36,278 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-09 05:18:36,281 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-09 05:18:36,282 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 05:18:36,282 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 05:18:36,282 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 05:18:36,307 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3589fc76-3023-4c08-aa48-d922a33bef60/bin/utaipan/witness.graphml [2020-12-09 05:18:36,307 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:18:36,308 INFO L168 Benchmark]: Toolchain (without parser) took 4948.75 ms. Allocated memory was 98.6 MB in the beginning and 197.1 MB in the end (delta: 98.6 MB). Free memory was 60.3 MB in the beginning and 56.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 102.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:18:36,309 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 98.6 MB. Free memory was 78.0 MB in the beginning and 77.9 MB in the end (delta: 71.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:18:36,309 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.71 ms. Allocated memory is still 98.6 MB. Free memory was 60.1 MB in the beginning and 53.5 MB in the end (delta: 6.6 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2020-12-09 05:18:36,309 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.79 ms. Allocated memory is still 98.6 MB. Free memory was 53.5 MB in the beginning and 51.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:18:36,310 INFO L168 Benchmark]: Boogie Preprocessor took 23.95 ms. Allocated memory is still 98.6 MB. Free memory was 51.4 MB in the beginning and 50.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:18:36,310 INFO L168 Benchmark]: RCFGBuilder took 353.59 ms. Allocated memory was 98.6 MB in the beginning and 136.3 MB in the end (delta: 37.7 MB). Free memory was 50.2 MB in the beginning and 101.0 MB in the end (delta: -50.8 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2020-12-09 05:18:36,310 INFO L168 Benchmark]: TraceAbstraction took 4136.19 ms. Allocated memory was 136.3 MB in the beginning and 197.1 MB in the end (delta: 60.8 MB). Free memory was 100.2 MB in the beginning and 60.0 MB in the end (delta: 40.2 MB). Peak memory consumption was 99.7 MB. Max. memory is 16.1 GB. [2020-12-09 05:18:36,311 INFO L168 Benchmark]: Witness Printer took 36.20 ms. Allocated memory is still 197.1 MB. Free memory was 60.0 MB in the beginning and 56.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 05:18:36,313 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 98.6 MB. Free memory was 78.0 MB in the beginning and 77.9 MB in the end (delta: 71.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 353.71 ms. Allocated memory is still 98.6 MB. Free memory was 60.1 MB in the beginning and 53.5 MB in the end (delta: 6.6 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.79 ms. Allocated memory is still 98.6 MB. Free memory was 53.5 MB in the beginning and 51.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.95 ms. Allocated memory is still 98.6 MB. Free memory was 51.4 MB in the beginning and 50.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 353.59 ms. Allocated memory was 98.6 MB in the beginning and 136.3 MB in the end (delta: 37.7 MB). Free memory was 50.2 MB in the beginning and 101.0 MB in the end (delta: -50.8 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4136.19 ms. Allocated memory was 136.3 MB in the beginning and 197.1 MB in the end (delta: 60.8 MB). Free memory was 100.2 MB in the beginning and 60.0 MB in the end (delta: 40.2 MB). Peak memory consumption was 99.7 MB. Max. memory is 16.1 GB. * Witness Printer took 36.20 ms. Allocated memory is still 197.1 MB. Free memory was 60.0 MB in the beginning and 56.9 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 1519 VarBasedMoverChecksPositive, 57 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 204 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 102 PlacesBefore, 41 PlacesAfterwards, 91 TransitionsBefore, 29 TransitionsAfterwards, 2064 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 72 TotalNumberOfCompositions, 4338 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 90 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 319 SDtfs, 469 SDslu, 573 SDs, 0 SdLazy, 128 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred 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: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 666 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 9537 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...