./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe014_tso.opt.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_46f5067d-22ac-4e78-bdf9-f6fab54e1b60/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_46f5067d-22ac-4e78-bdf9-f6fab54e1b60/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_46f5067d-22ac-4e78-bdf9-f6fab54e1b60/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_46f5067d-22ac-4e78-bdf9-f6fab54e1b60/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe014_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_46f5067d-22ac-4e78-bdf9-f6fab54e1b60/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_46f5067d-22ac-4e78-bdf9-f6fab54e1b60/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 607361a82234b19b631bd46eb1cc02ecf35700c5 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 13:07:35,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 13:07:35,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 13:07:35,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 13:07:35,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 13:07:35,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 13:07:35,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 13:07:35,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 13:07:35,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 13:07:35,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 13:07:35,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 13:07:35,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 13:07:35,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 13:07:35,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 13:07:35,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 13:07:35,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 13:07:35,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 13:07:35,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 13:07:35,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 13:07:35,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 13:07:35,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 13:07:35,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 13:07:35,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 13:07:35,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 13:07:35,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 13:07:35,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 13:07:35,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 13:07:35,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 13:07:35,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 13:07:35,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 13:07:35,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 13:07:35,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 13:07:35,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 13:07:35,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 13:07:35,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 13:07:35,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 13:07:35,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 13:07:35,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 13:07:35,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 13:07:35,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 13:07:35,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 13:07:35,834 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_46f5067d-22ac-4e78-bdf9-f6fab54e1b60/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 13:07:35,857 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 13:07:35,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 13:07:35,858 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 13:07:35,858 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 13:07:35,859 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 13:07:35,859 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 13:07:35,859 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 13:07:35,859 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 13:07:35,859 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 13:07:35,859 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 13:07:35,860 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 13:07:35,860 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 13:07:35,860 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 13:07:35,860 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 13:07:35,861 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 13:07:35,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 13:07:35,861 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 13:07:35,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 13:07:35,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 13:07:35,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 13:07:35,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 13:07:35,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 13:07:35,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 13:07:35,863 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 13:07:35,863 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 13:07:35,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 13:07:35,863 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 13:07:35,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 13:07:35,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 13:07:35,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 13:07:35,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 13:07:35,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 13:07:35,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 13:07:35,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 13:07:35,865 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 13:07:35,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 13:07:35,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 13:07:35,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 13:07:35,866 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 13:07:35,866 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_46f5067d-22ac-4e78-bdf9-f6fab54e1b60/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_46f5067d-22ac-4e78-bdf9-f6fab54e1b60/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 607361a82234b19b631bd46eb1cc02ecf35700c5 [2020-12-09 13:07:36,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 13:07:36,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 13:07:36,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 13:07:36,059 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 13:07:36,060 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 13:07:36,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_46f5067d-22ac-4e78-bdf9-f6fab54e1b60/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe014_tso.opt.i [2020-12-09 13:07:36,109 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_46f5067d-22ac-4e78-bdf9-f6fab54e1b60/bin/utaipan/data/dafb6e938/73f515f1c97449e2bbf25c25cdcb2055/FLAG5acb8ed9f [2020-12-09 13:07:36,556 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 13:07:36,556 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_46f5067d-22ac-4e78-bdf9-f6fab54e1b60/sv-benchmarks/c/pthread-wmm/safe014_tso.opt.i [2020-12-09 13:07:36,568 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_46f5067d-22ac-4e78-bdf9-f6fab54e1b60/bin/utaipan/data/dafb6e938/73f515f1c97449e2bbf25c25cdcb2055/FLAG5acb8ed9f [2020-12-09 13:07:36,579 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_46f5067d-22ac-4e78-bdf9-f6fab54e1b60/bin/utaipan/data/dafb6e938/73f515f1c97449e2bbf25c25cdcb2055 [2020-12-09 13:07:36,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 13:07:36,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 13:07:36,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 13:07:36,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 13:07:36,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 13:07:36,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:07:36" (1/1) ... [2020-12-09 13:07:36,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6871ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:07:36, skipping insertion in model container [2020-12-09 13:07:36,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:07:36" (1/1) ... [2020-12-09 13:07:36,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 13:07:36,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 13:07:36,756 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_46f5067d-22ac-4e78-bdf9-f6fab54e1b60/sv-benchmarks/c/pthread-wmm/safe014_tso.opt.i[949,962] [2020-12-09 13:07:36,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 13:07:36,868 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 13:07:36,877 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_46f5067d-22ac-4e78-bdf9-f6fab54e1b60/sv-benchmarks/c/pthread-wmm/safe014_tso.opt.i[949,962] [2020-12-09 13:07:36,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 13:07:36,945 INFO L208 MainTranslator]: Completed translation [2020-12-09 13:07:36,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:07:36 WrapperNode [2020-12-09 13:07:36,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 13:07:36,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 13:07:36,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 13:07:36,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 13:07:36,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:07:36" (1/1) ... [2020-12-09 13:07:36,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:07:36" (1/1) ... [2020-12-09 13:07:36,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 13:07:36,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 13:07:36,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 13:07:36,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 13:07:36,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:07:36" (1/1) ... [2020-12-09 13:07:36,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:07:36" (1/1) ... [2020-12-09 13:07:36,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:07:36" (1/1) ... [2020-12-09 13:07:36,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:07:36" (1/1) ... [2020-12-09 13:07:36,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:07:36" (1/1) ... [2020-12-09 13:07:36,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:07:36" (1/1) ... [2020-12-09 13:07:36,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:07:36" (1/1) ... [2020-12-09 13:07:36,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 13:07:36,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 13:07:36,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 13:07:36,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 13:07:36,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:07:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46f5067d-22ac-4e78-bdf9-f6fab54e1b60/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 13:07:37,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 13:07:37,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 13:07:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 13:07:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 13:07:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 13:07:37,049 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 13:07:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 13:07:37,049 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 13:07:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 13:07:37,049 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 13:07:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 13:07:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 13:07:37,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 13:07:37,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 13:07:37,051 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 13:07:37,267 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 13:07:37,267 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 13:07:37,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:07:37 BoogieIcfgContainer [2020-12-09 13:07:37,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 13:07:37,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 13:07:37,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 13:07:37,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 13:07:37,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:07:36" (1/3) ... [2020-12-09 13:07:37,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4551e945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:07:37, skipping insertion in model container [2020-12-09 13:07:37,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:07:36" (2/3) ... [2020-12-09 13:07:37,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4551e945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:07:37, skipping insertion in model container [2020-12-09 13:07:37,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:07:37" (3/3) ... [2020-12-09 13:07:37,277 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.opt.i [2020-12-09 13:07:37,290 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 13:07:37,290 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 13:07:37,292 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 13:07:37,293 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 13:07:37,318 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,319 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,319 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,319 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,319 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,320 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,320 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,320 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,321 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,321 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,321 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,321 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,322 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,322 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,322 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,322 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,323 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,323 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,323 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,323 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,324 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,324 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,324 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,324 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,325 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,325 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,325 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,325 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,325 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,326 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,326 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,326 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,326 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,327 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,327 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,327 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,329 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,330 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,330 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,330 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,334 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,334 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,335 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,335 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,336 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,337 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,337 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,337 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:07:37,338 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 13:07:37,347 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 13:07:37,362 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 13:07:37,362 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 13:07:37,362 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 13:07:37,362 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 13:07:37,362 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 13:07:37,362 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 13:07:37,362 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 13:07:37,363 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 13:07:37,371 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 13:07:37,372 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-09 13:07:37,374 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-09 13:07:37,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-09 13:07:37,406 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-09 13:07:37,407 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 13:07:37,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-09 13:07:37,411 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-09 13:07:39,141 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-09 13:07:39,348 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-09 13:07:39,415 INFO L131 LiptonReduction]: Checked pairs total: 2653 [2020-12-09 13:07:39,415 INFO L133 LiptonReduction]: Total number of compositions: 59 [2020-12-09 13:07:39,419 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-09 13:07:39,436 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-09 13:07:39,437 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-09 13:07:39,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 13:07:39,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:07:39,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:07:39,442 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:07:39,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:07:39,446 INFO L82 PathProgramCache]: Analyzing trace with hash -991402129, now seen corresponding path program 1 times [2020-12-09 13:07:39,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:07:39,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449886675] [2020-12-09 13:07:39,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:07:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:07:39,558 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 13:07:39,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449886675] [2020-12-09 13:07:39,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:07:39,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 13:07:39,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387637206] [2020-12-09 13:07:39,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 13:07:39,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:07:39,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 13:07:39,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 13:07:39,572 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-09 13:07:39,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:07:39,594 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-09 13:07:39,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 13:07:39,595 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 13:07:39,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:07:39,605 INFO L225 Difference]: With dead ends: 362 [2020-12-09 13:07:39,605 INFO L226 Difference]: Without dead ends: 298 [2020-12-09 13:07:39,606 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 13:07:39,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-09 13:07:39,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-09 13:07:39,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-09 13:07:39,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-09 13:07:39,655 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-09 13:07:39,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:07:39,655 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-09 13:07:39,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 13:07:39,655 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-09 13:07:39,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 13:07:39,656 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:07:39,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:07:39,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 13:07:39,657 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:07:39,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:07:39,657 INFO L82 PathProgramCache]: Analyzing trace with hash -668714259, now seen corresponding path program 1 times [2020-12-09 13:07:39,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:07:39,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770085959] [2020-12-09 13:07:39,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:07:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:07:39,745 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 13:07:39,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770085959] [2020-12-09 13:07:39,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:07:39,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 13:07:39,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367178879] [2020-12-09 13:07:39,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 13:07:39,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:07:39,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 13:07:39,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 13:07:39,747 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-09 13:07:39,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:07:39,769 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-12-09 13:07:39,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 13:07:39,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 13:07:39,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:07:39,772 INFO L225 Difference]: With dead ends: 330 [2020-12-09 13:07:39,772 INFO L226 Difference]: Without dead ends: 266 [2020-12-09 13:07:39,773 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 13:07:39,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-12-09 13:07:39,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-12-09 13:07:39,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-12-09 13:07:39,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-12-09 13:07:39,787 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-12-09 13:07:39,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:07:39,787 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-12-09 13:07:39,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 13:07:39,787 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-12-09 13:07:39,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 13:07:39,788 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:07:39,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:07:39,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 13:07:39,789 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:07:39,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:07:39,789 INFO L82 PathProgramCache]: Analyzing trace with hash 744680885, now seen corresponding path program 1 times [2020-12-09 13:07:39,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:07:39,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910365698] [2020-12-09 13:07:39,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:07:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:07:39,848 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 13:07:39,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910365698] [2020-12-09 13:07:39,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:07:39,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:07:39,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573525112] [2020-12-09 13:07:39,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 13:07:39,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:07:39,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 13:07:39,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:07:39,849 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-12-09 13:07:39,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:07:39,891 INFO L93 Difference]: Finished difference Result 362 states and 1008 transitions. [2020-12-09 13:07:39,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 13:07:39,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 13:07:39,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:07:39,893 INFO L225 Difference]: With dead ends: 362 [2020-12-09 13:07:39,893 INFO L226 Difference]: Without dead ends: 218 [2020-12-09 13:07:39,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 13:07:39,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-12-09 13:07:39,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-12-09 13:07:39,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-09 13:07:39,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 592 transitions. [2020-12-09 13:07:39,910 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 592 transitions. Word has length 10 [2020-12-09 13:07:39,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:07:39,910 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 592 transitions. [2020-12-09 13:07:39,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 13:07:39,910 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 592 transitions. [2020-12-09 13:07:39,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 13:07:39,911 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:07:39,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:07:39,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 13:07:39,911 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:07:39,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:07:39,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1281410722, now seen corresponding path program 1 times [2020-12-09 13:07:39,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:07:39,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066554412] [2020-12-09 13:07:39,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:07:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:07:39,965 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 13:07:39,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066554412] [2020-12-09 13:07:39,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:07:39,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 13:07:39,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947441692] [2020-12-09 13:07:39,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 13:07:39,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:07:39,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 13:07:39,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:07:39,967 INFO L87 Difference]: Start difference. First operand 218 states and 592 transitions. Second operand 5 states. [2020-12-09 13:07:40,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:07:40,006 INFO L93 Difference]: Finished difference Result 278 states and 737 transitions. [2020-12-09 13:07:40,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 13:07:40,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 13:07:40,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:07:40,008 INFO L225 Difference]: With dead ends: 278 [2020-12-09 13:07:40,008 INFO L226 Difference]: Without dead ends: 170 [2020-12-09 13:07:40,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 13:07:40,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-12-09 13:07:40,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-12-09 13:07:40,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-12-09 13:07:40,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 432 transitions. [2020-12-09 13:07:40,013 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 432 transitions. Word has length 11 [2020-12-09 13:07:40,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:07:40,013 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 432 transitions. [2020-12-09 13:07:40,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 13:07:40,013 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 432 transitions. [2020-12-09 13:07:40,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 13:07:40,014 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:07:40,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:07:40,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 13:07:40,014 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:07:40,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:07:40,015 INFO L82 PathProgramCache]: Analyzing trace with hash -663598862, now seen corresponding path program 1 times [2020-12-09 13:07:40,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:07:40,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272646408] [2020-12-09 13:07:40,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:07:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:07:40,062 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 13:07:40,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272646408] [2020-12-09 13:07:40,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:07:40,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 13:07:40,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068662920] [2020-12-09 13:07:40,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 13:07:40,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:07:40,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 13:07:40,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 13:07:40,064 INFO L87 Difference]: Start difference. First operand 170 states and 432 transitions. Second operand 4 states. [2020-12-09 13:07:40,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:07:40,079 INFO L93 Difference]: Finished difference Result 182 states and 446 transitions. [2020-12-09 13:07:40,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 13:07:40,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 13:07:40,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:07:40,081 INFO L225 Difference]: With dead ends: 182 [2020-12-09 13:07:40,081 INFO L226 Difference]: Without dead ends: 158 [2020-12-09 13:07:40,081 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 13:07:40,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-09 13:07:40,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-12-09 13:07:40,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-12-09 13:07:40,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 394 transitions. [2020-12-09 13:07:40,085 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 394 transitions. Word has length 12 [2020-12-09 13:07:40,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:07:40,085 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 394 transitions. [2020-12-09 13:07:40,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 13:07:40,085 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 394 transitions. [2020-12-09 13:07:40,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 13:07:40,086 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:07:40,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:07:40,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 13:07:40,087 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:07:40,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:07:40,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1497460825, now seen corresponding path program 1 times [2020-12-09 13:07:40,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:07:40,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966222010] [2020-12-09 13:07:40,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:07:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:07:40,143 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 13:07:40,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966222010] [2020-12-09 13:07:40,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:07:40,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 13:07:40,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839765239] [2020-12-09 13:07:40,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 13:07:40,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:07:40,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 13:07:40,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 13:07:40,144 INFO L87 Difference]: Start difference. First operand 158 states and 394 transitions. Second operand 6 states. [2020-12-09 13:07:40,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:07:40,190 INFO L93 Difference]: Finished difference Result 196 states and 471 transitions. [2020-12-09 13:07:40,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 13:07:40,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-09 13:07:40,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:07:40,191 INFO L225 Difference]: With dead ends: 196 [2020-12-09 13:07:40,191 INFO L226 Difference]: Without dead ends: 64 [2020-12-09 13:07:40,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-09 13:07:40,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-09 13:07:40,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-12-09 13:07:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-09 13:07:40,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 128 transitions. [2020-12-09 13:07:40,193 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 128 transitions. Word has length 13 [2020-12-09 13:07:40,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:07:40,194 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 128 transitions. [2020-12-09 13:07:40,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 13:07:40,194 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 128 transitions. [2020-12-09 13:07:40,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 13:07:40,194 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:07:40,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:07:40,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 13:07:40,194 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:07:40,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:07:40,195 INFO L82 PathProgramCache]: Analyzing trace with hash -2064800307, now seen corresponding path program 1 times [2020-12-09 13:07:40,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:07:40,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295436228] [2020-12-09 13:07:40,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:07:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:07:40,232 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 13:07:40,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295436228] [2020-12-09 13:07:40,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:07:40,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:07:40,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854594275] [2020-12-09 13:07:40,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 13:07:40,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:07:40,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 13:07:40,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 13:07:40,234 INFO L87 Difference]: Start difference. First operand 64 states and 128 transitions. Second operand 4 states. [2020-12-09 13:07:40,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:07:40,253 INFO L93 Difference]: Finished difference Result 66 states and 117 transitions. [2020-12-09 13:07:40,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 13:07:40,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-09 13:07:40,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:07:40,254 INFO L225 Difference]: With dead ends: 66 [2020-12-09 13:07:40,254 INFO L226 Difference]: Without dead ends: 52 [2020-12-09 13:07:40,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:07:40,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-09 13:07:40,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-09 13:07:40,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-09 13:07:40,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2020-12-09 13:07:40,257 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 14 [2020-12-09 13:07:40,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:07:40,257 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2020-12-09 13:07:40,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 13:07:40,257 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2020-12-09 13:07:40,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 13:07:40,258 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:07:40,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:07:40,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 13:07:40,258 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:07:40,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:07:40,259 INFO L82 PathProgramCache]: Analyzing trace with hash 182443752, now seen corresponding path program 1 times [2020-12-09 13:07:40,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:07:40,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295416500] [2020-12-09 13:07:40,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:07:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:07:40,307 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 13:07:40,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295416500] [2020-12-09 13:07:40,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:07:40,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 13:07:40,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081948806] [2020-12-09 13:07:40,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 13:07:40,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:07:40,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 13:07:40,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:07:40,309 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand 5 states. [2020-12-09 13:07:40,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:07:40,335 INFO L93 Difference]: Finished difference Result 42 states and 64 transitions. [2020-12-09 13:07:40,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 13:07:40,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-09 13:07:40,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:07:40,336 INFO L225 Difference]: With dead ends: 42 [2020-12-09 13:07:40,336 INFO L226 Difference]: Without dead ends: 34 [2020-12-09 13:07:40,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 13:07:40,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-09 13:07:40,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-09 13:07:40,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-09 13:07:40,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2020-12-09 13:07:40,337 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 15 [2020-12-09 13:07:40,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:07:40,337 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2020-12-09 13:07:40,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 13:07:40,337 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2020-12-09 13:07:40,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 13:07:40,338 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:07:40,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:07:40,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 13:07:40,338 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:07:40,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:07:40,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1015325315, now seen corresponding path program 1 times [2020-12-09 13:07:40,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:07:40,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779012530] [2020-12-09 13:07:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:07:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:07:40,394 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 13:07:40,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779012530] [2020-12-09 13:07:40,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:07:40,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 13:07:40,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381065282] [2020-12-09 13:07:40,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 13:07:40,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:07:40,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 13:07:40,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 13:07:40,396 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 6 states. [2020-12-09 13:07:40,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:07:40,412 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2020-12-09 13:07:40,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 13:07:40,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-09 13:07:40,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:07:40,412 INFO L225 Difference]: With dead ends: 28 [2020-12-09 13:07:40,412 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 13:07:40,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 13:07:40,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 13:07:40,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 13:07:40,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 13:07:40,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 13:07:40,413 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-09 13:07:40,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:07:40,413 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 13:07:40,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 13:07:40,413 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 13:07:40,413 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 13:07:40,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 13:07:40,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:07:40 BasicIcfg [2020-12-09 13:07:40,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 13:07:40,416 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 13:07:40,416 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 13:07:40,416 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 13:07:40,416 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:07:37" (3/4) ... [2020-12-09 13:07:40,419 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 13:07:40,423 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 13:07:40,423 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 13:07:40,423 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 13:07:40,426 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-09 13:07:40,426 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 13:07:40,427 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 13:07:40,427 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 13:07:40,453 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_46f5067d-22ac-4e78-bdf9-f6fab54e1b60/bin/utaipan/witness.graphml [2020-12-09 13:07:40,453 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 13:07:40,454 INFO L168 Benchmark]: Toolchain (without parser) took 3871.38 ms. Allocated memory was 121.6 MB in the beginning and 197.1 MB in the end (delta: 75.5 MB). Free memory was 94.3 MB in the beginning and 156.2 MB in the end (delta: -61.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2020-12-09 13:07:40,454 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 121.6 MB. Free memory is still 77.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 13:07:40,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.19 ms. Allocated memory is still 121.6 MB. Free memory was 94.1 MB in the beginning and 76.2 MB in the end (delta: 18.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-09 13:07:40,455 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.09 ms. Allocated memory is still 121.6 MB. Free memory was 76.2 MB in the beginning and 74.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 13:07:40,455 INFO L168 Benchmark]: Boogie Preprocessor took 17.97 ms. Allocated memory is still 121.6 MB. Free memory was 74.2 MB in the beginning and 72.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 13:07:40,456 INFO L168 Benchmark]: RCFGBuilder took 274.59 ms. Allocated memory was 121.6 MB in the beginning and 163.6 MB in the end (delta: 41.9 MB). Free memory was 72.7 MB in the beginning and 136.0 MB in the end (delta: -63.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. [2020-12-09 13:07:40,456 INFO L168 Benchmark]: TraceAbstraction took 3144.94 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 136.0 MB in the beginning and 159.4 MB in the end (delta: -23.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-12-09 13:07:40,457 INFO L168 Benchmark]: Witness Printer took 37.25 ms. Allocated memory is still 197.1 MB. Free memory was 159.4 MB in the beginning and 156.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 13:07:40,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 121.6 MB. Free memory is still 77.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 362.19 ms. Allocated memory is still 121.6 MB. Free memory was 94.1 MB in the beginning and 76.2 MB in the end (delta: 18.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.09 ms. Allocated memory is still 121.6 MB. Free memory was 76.2 MB in the beginning and 74.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.97 ms. Allocated memory is still 121.6 MB. Free memory was 74.2 MB in the beginning and 72.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 274.59 ms. Allocated memory was 121.6 MB in the beginning and 163.6 MB in the end (delta: 41.9 MB). Free memory was 72.7 MB in the beginning and 136.0 MB in the end (delta: -63.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3144.94 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 136.0 MB in the beginning and 159.4 MB in the end (delta: -23.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * Witness Printer took 37.25 ms. Allocated memory is still 197.1 MB. Free memory was 159.4 MB in the beginning and 156.2 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 734 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 58 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2653 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 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 194 SDtfs, 200 SDslu, 288 SDs, 0 SdLazy, 122 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 4395 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...