./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_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_fdb8d0b1-37ba-41d4-a891-cd71b1b0dfb0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fdb8d0b1-37ba-41d4-a891-cd71b1b0dfb0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fdb8d0b1-37ba-41d4-a891-cd71b1b0dfb0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fdb8d0b1-37ba-41d4-a891-cd71b1b0dfb0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_fdb8d0b1-37ba-41d4-a891-cd71b1b0dfb0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fdb8d0b1-37ba-41d4-a891-cd71b1b0dfb0/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 70e8c1b26f7f247410d44e16381a417c3f50af94 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:26:57,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 15:26:57,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 15:26:57,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 15:26:57,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 15:26:57,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 15:26:57,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 15:26:57,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 15:26:57,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 15:26:57,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 15:26:57,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 15:26:57,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 15:26:57,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 15:26:57,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 15:26:57,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 15:26:57,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 15:26:57,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 15:26:57,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 15:26:57,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 15:26:57,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 15:26:57,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 15:26:57,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 15:26:57,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 15:26:57,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 15:26:57,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 15:26:57,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 15:26:57,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 15:26:57,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 15:26:57,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 15:26:57,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 15:26:57,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 15:26:57,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 15:26:57,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 15:26:57,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 15:26:57,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 15:26:57,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 15:26:57,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 15:26:57,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 15:26:57,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 15:26:57,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 15:26:57,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 15:26:57,829 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fdb8d0b1-37ba-41d4-a891-cd71b1b0dfb0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 15:26:57,851 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 15:26:57,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 15:26:57,852 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 15:26:57,852 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 15:26:57,852 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 15:26:57,852 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 15:26:57,852 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 15:26:57,853 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 15:26:57,853 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 15:26:57,853 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 15:26:57,853 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 15:26:57,853 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 15:26:57,854 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 15:26:57,854 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 15:26:57,854 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 15:26:57,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 15:26:57,855 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 15:26:57,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 15:26:57,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 15:26:57,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 15:26:57,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 15:26:57,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 15:26:57,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 15:26:57,856 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 15:26:57,856 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 15:26:57,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 15:26:57,856 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 15:26:57,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 15:26:57,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 15:26:57,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 15:26:57,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 15:26:57,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 15:26:57,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 15:26:57,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 15:26:57,858 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 15:26:57,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 15:26:57,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 15:26:57,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 15:26:57,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 15:26:57,859 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_fdb8d0b1-37ba-41d4-a891-cd71b1b0dfb0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fdb8d0b1-37ba-41d4-a891-cd71b1b0dfb0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70e8c1b26f7f247410d44e16381a417c3f50af94 [2020-12-09 15:26:58,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 15:26:58,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 15:26:58,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 15:26:58,056 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 15:26:58,056 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 15:26:58,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fdb8d0b1-37ba-41d4-a891-cd71b1b0dfb0/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe016_tso.opt.i [2020-12-09 15:26:58,099 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fdb8d0b1-37ba-41d4-a891-cd71b1b0dfb0/bin/utaipan/data/a441bd1cb/7a630353b3564de2812611ac6bfd1862/FLAGb9c0ef288 [2020-12-09 15:26:58,505 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 15:26:58,506 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fdb8d0b1-37ba-41d4-a891-cd71b1b0dfb0/sv-benchmarks/c/pthread-wmm/safe016_tso.opt.i [2020-12-09 15:26:58,519 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fdb8d0b1-37ba-41d4-a891-cd71b1b0dfb0/bin/utaipan/data/a441bd1cb/7a630353b3564de2812611ac6bfd1862/FLAGb9c0ef288 [2020-12-09 15:26:58,528 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fdb8d0b1-37ba-41d4-a891-cd71b1b0dfb0/bin/utaipan/data/a441bd1cb/7a630353b3564de2812611ac6bfd1862 [2020-12-09 15:26:58,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 15:26:58,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 15:26:58,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 15:26:58,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 15:26:58,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 15:26:58,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:26:58" (1/1) ... [2020-12-09 15:26:58,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d233e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:58, skipping insertion in model container [2020-12-09 15:26:58,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:26:58" (1/1) ... [2020-12-09 15:26:58,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 15:26:58,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 15:26:58,680 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_fdb8d0b1-37ba-41d4-a891-cd71b1b0dfb0/sv-benchmarks/c/pthread-wmm/safe016_tso.opt.i[949,962] [2020-12-09 15:26:58,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:26:58,781 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 15:26:58,789 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_fdb8d0b1-37ba-41d4-a891-cd71b1b0dfb0/sv-benchmarks/c/pthread-wmm/safe016_tso.opt.i[949,962] [2020-12-09 15:26:58,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:26:58,860 INFO L208 MainTranslator]: Completed translation [2020-12-09 15:26:58,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:58 WrapperNode [2020-12-09 15:26:58,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 15:26:58,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 15:26:58,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 15:26:58,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 15:26:58,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:58" (1/1) ... [2020-12-09 15:26:58,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:58" (1/1) ... [2020-12-09 15:26:58,891 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 15:26:58,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 15:26:58,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 15:26:58,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 15:26:58,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:58" (1/1) ... [2020-12-09 15:26:58,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:58" (1/1) ... [2020-12-09 15:26:58,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:58" (1/1) ... [2020-12-09 15:26:58,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:58" (1/1) ... [2020-12-09 15:26:58,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:58" (1/1) ... [2020-12-09 15:26:58,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:58" (1/1) ... [2020-12-09 15:26:58,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:58" (1/1) ... [2020-12-09 15:26:58,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 15:26:58,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 15:26:58,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 15:26:58,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 15:26:58,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdb8d0b1-37ba-41d4-a891-cd71b1b0dfb0/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 15:26:58,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 15:26:58,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 15:26:58,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 15:26:58,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 15:26:58,983 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 15:26:58,983 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 15:26:58,983 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 15:26:58,983 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 15:26:58,983 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 15:26:58,983 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 15:26:58,984 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-09 15:26:58,984 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-09 15:26:58,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 15:26:58,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 15:26:58,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 15:26:58,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 15:26:58,986 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 15:26:59,210 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 15:26:59,210 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 15:26:59,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:26:59 BoogieIcfgContainer [2020-12-09 15:26:59,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 15:26:59,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 15:26:59,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 15:26:59,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 15:26:59,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:26:58" (1/3) ... [2020-12-09 15:26:59,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4305910d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:26:59, skipping insertion in model container [2020-12-09 15:26:59,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:58" (2/3) ... [2020-12-09 15:26:59,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4305910d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:26:59, skipping insertion in model container [2020-12-09 15:26:59,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:26:59" (3/3) ... [2020-12-09 15:26:59,218 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.opt.i [2020-12-09 15:26:59,227 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 15:26:59,227 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 15:26:59,230 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 15:26:59,230 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 15:26:59,252 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,252 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,252 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,252 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,253 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,253 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,253 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,253 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,253 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,253 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,253 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,253 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,254 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,254 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,254 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,254 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,254 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,254 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,254 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,254 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,255 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,255 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,255 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,255 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,255 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,255 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,255 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,255 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,256 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,256 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,256 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,256 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,256 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,256 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,256 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,256 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,257 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,257 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,257 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,257 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,258 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,258 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,258 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,258 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,258 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,258 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,258 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,258 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,260 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,260 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,260 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,260 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,264 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,264 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,264 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,265 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,266 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,266 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,266 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,266 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,268 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,268 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,268 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,269 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:26:59,270 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 15:26:59,278 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-09 15:26:59,292 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 15:26:59,292 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 15:26:59,292 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 15:26:59,292 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 15:26:59,292 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 15:26:59,292 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 15:26:59,292 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 15:26:59,292 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 15:26:59,301 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 15:26:59,303 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 85 transitions, 190 flow [2020-12-09 15:26:59,305 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 85 transitions, 190 flow [2020-12-09 15:26:59,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 85 transitions, 190 flow [2020-12-09 15:26:59,337 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2020-12-09 15:26:59,337 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 15:26:59,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2020-12-09 15:26:59,342 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2020-12-09 15:27:01,151 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-09 15:27:01,336 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-09 15:27:01,437 INFO L131 LiptonReduction]: Checked pairs total: 3411 [2020-12-09 15:27:01,437 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-12-09 15:27:01,442 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-12-09 15:27:01,488 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-12-09 15:27:01,489 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-12-09 15:27:01,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 15:27:01,496 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:27:01,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:27:01,497 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:27:01,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:27:01,501 INFO L82 PathProgramCache]: Analyzing trace with hash -975438877, now seen corresponding path program 1 times [2020-12-09 15:27:01,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:27:01,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334378625] [2020-12-09 15:27:01,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:27:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:27:01,631 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 15:27:01,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334378625] [2020-12-09 15:27:01,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:27:01,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 15:27:01,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228100302] [2020-12-09 15:27:01,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 15:27:01,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:27:01,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 15:27:01,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 15:27:01,646 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-12-09 15:27:01,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:27:01,677 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-12-09 15:27:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 15:27:01,678 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-09 15:27:01,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:27:01,694 INFO L225 Difference]: With dead ends: 850 [2020-12-09 15:27:01,694 INFO L226 Difference]: Without dead ends: 706 [2020-12-09 15:27:01,695 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 15:27:01,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-12-09 15:27:01,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-12-09 15:27:01,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-12-09 15:27:01,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-12-09 15:27:01,763 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-12-09 15:27:01,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:27:01,764 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-12-09 15:27:01,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 15:27:01,764 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-12-09 15:27:01,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 15:27:01,766 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:27:01,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:27:01,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 15:27:01,766 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:27:01,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:27:01,767 INFO L82 PathProgramCache]: Analyzing trace with hash -173841252, now seen corresponding path program 1 times [2020-12-09 15:27:01,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:27:01,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847661494] [2020-12-09 15:27:01,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:27:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:27:01,847 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 15:27:01,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847661494] [2020-12-09 15:27:01,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:27:01,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 15:27:01,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514528541] [2020-12-09 15:27:01,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 15:27:01,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:27:01,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 15:27:01,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:27:01,849 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-12-09 15:27:01,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:27:01,874 INFO L93 Difference]: Finished difference Result 778 states and 2592 transitions. [2020-12-09 15:27:01,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:27:01,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 15:27:01,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:27:01,879 INFO L225 Difference]: With dead ends: 778 [2020-12-09 15:27:01,879 INFO L226 Difference]: Without dead ends: 634 [2020-12-09 15:27:01,879 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 15:27:01,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-12-09 15:27:01,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2020-12-09 15:27:01,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-12-09 15:27:01,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2148 transitions. [2020-12-09 15:27:01,900 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2148 transitions. Word has length 11 [2020-12-09 15:27:01,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:27:01,900 INFO L481 AbstractCegarLoop]: Abstraction has 634 states and 2148 transitions. [2020-12-09 15:27:01,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 15:27:01,901 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2148 transitions. [2020-12-09 15:27:01,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 15:27:01,902 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:27:01,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:27:01,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 15:27:01,903 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:27:01,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:27:01,903 INFO L82 PathProgramCache]: Analyzing trace with hash -892982348, now seen corresponding path program 1 times [2020-12-09 15:27:01,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:27:01,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388142790] [2020-12-09 15:27:01,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:27:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:27:01,967 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 15:27:01,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388142790] [2020-12-09 15:27:01,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:27:01,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:27:01,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565174876] [2020-12-09 15:27:01,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:27:01,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:27:01,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:27:01,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:27:01,969 INFO L87 Difference]: Start difference. First operand 634 states and 2148 transitions. Second operand 5 states. [2020-12-09 15:27:02,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:27:02,029 INFO L93 Difference]: Finished difference Result 1168 states and 3734 transitions. [2020-12-09 15:27:02,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 15:27:02,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 15:27:02,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:27:02,036 INFO L225 Difference]: With dead ends: 1168 [2020-12-09 15:27:02,036 INFO L226 Difference]: Without dead ends: 918 [2020-12-09 15:27:02,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 15:27:02,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2020-12-09 15:27:02,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 750. [2020-12-09 15:27:02,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2020-12-09 15:27:02,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2414 transitions. [2020-12-09 15:27:02,060 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2414 transitions. Word has length 12 [2020-12-09 15:27:02,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:27:02,060 INFO L481 AbstractCegarLoop]: Abstraction has 750 states and 2414 transitions. [2020-12-09 15:27:02,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:27:02,061 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2414 transitions. [2020-12-09 15:27:02,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 15:27:02,062 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:27:02,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:27:02,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 15:27:02,063 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:27:02,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:27:02,063 INFO L82 PathProgramCache]: Analyzing trace with hash -2143192221, now seen corresponding path program 1 times [2020-12-09 15:27:02,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:27:02,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242931725] [2020-12-09 15:27:02,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:27:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:27:02,118 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 15:27:02,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242931725] [2020-12-09 15:27:02,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:27:02,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:27:02,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719121319] [2020-12-09 15:27:02,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:27:02,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:27:02,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:27:02,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:27:02,119 INFO L87 Difference]: Start difference. First operand 750 states and 2414 transitions. Second operand 5 states. [2020-12-09 15:27:02,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:27:02,165 INFO L93 Difference]: Finished difference Result 998 states and 3094 transitions. [2020-12-09 15:27:02,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 15:27:02,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 15:27:02,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:27:02,171 INFO L225 Difference]: With dead ends: 998 [2020-12-09 15:27:02,171 INFO L226 Difference]: Without dead ends: 874 [2020-12-09 15:27:02,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 15:27:02,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2020-12-09 15:27:02,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 658. [2020-12-09 15:27:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-12-09 15:27:02,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2100 transitions. [2020-12-09 15:27:02,192 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2100 transitions. Word has length 13 [2020-12-09 15:27:02,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:27:02,192 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 2100 transitions. [2020-12-09 15:27:02,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:27:02,192 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2100 transitions. [2020-12-09 15:27:02,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 15:27:02,193 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:27:02,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:27:02,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 15:27:02,194 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:27:02,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:27:02,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1163230994, now seen corresponding path program 1 times [2020-12-09 15:27:02,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:27:02,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891035744] [2020-12-09 15:27:02,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:27:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:27:02,249 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 15:27:02,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891035744] [2020-12-09 15:27:02,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:27:02,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 15:27:02,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156827183] [2020-12-09 15:27:02,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 15:27:02,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:27:02,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 15:27:02,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:27:02,251 INFO L87 Difference]: Start difference. First operand 658 states and 2100 transitions. Second operand 6 states. [2020-12-09 15:27:02,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:27:02,310 INFO L93 Difference]: Finished difference Result 1098 states and 3388 transitions. [2020-12-09 15:27:02,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 15:27:02,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-09 15:27:02,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:27:02,314 INFO L225 Difference]: With dead ends: 1098 [2020-12-09 15:27:02,314 INFO L226 Difference]: Without dead ends: 618 [2020-12-09 15:27:02,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-12-09 15:27:02,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-12-09 15:27:02,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 498. [2020-12-09 15:27:02,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2020-12-09 15:27:02,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1528 transitions. [2020-12-09 15:27:02,329 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1528 transitions. Word has length 14 [2020-12-09 15:27:02,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:27:02,330 INFO L481 AbstractCegarLoop]: Abstraction has 498 states and 1528 transitions. [2020-12-09 15:27:02,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 15:27:02,330 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1528 transitions. [2020-12-09 15:27:02,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 15:27:02,331 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:27:02,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:27:02,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 15:27:02,331 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:27:02,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:27:02,331 INFO L82 PathProgramCache]: Analyzing trace with hash -672340700, now seen corresponding path program 1 times [2020-12-09 15:27:02,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:27:02,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685783579] [2020-12-09 15:27:02,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:27:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:27:02,384 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 15:27:02,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685783579] [2020-12-09 15:27:02,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:27:02,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 15:27:02,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821401976] [2020-12-09 15:27:02,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:27:02,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:27:02,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:27:02,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:27:02,385 INFO L87 Difference]: Start difference. First operand 498 states and 1528 transitions. Second operand 5 states. [2020-12-09 15:27:02,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:27:02,433 INFO L93 Difference]: Finished difference Result 774 states and 2260 transitions. [2020-12-09 15:27:02,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 15:27:02,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-09 15:27:02,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:27:02,437 INFO L225 Difference]: With dead ends: 774 [2020-12-09 15:27:02,437 INFO L226 Difference]: Without dead ends: 602 [2020-12-09 15:27:02,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 15:27:02,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-12-09 15:27:02,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 442. [2020-12-09 15:27:02,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-12-09 15:27:02,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1320 transitions. [2020-12-09 15:27:02,450 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1320 transitions. Word has length 15 [2020-12-09 15:27:02,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:27:02,450 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 1320 transitions. [2020-12-09 15:27:02,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:27:02,450 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1320 transitions. [2020-12-09 15:27:02,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 15:27:02,451 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:27:02,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:27:02,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 15:27:02,451 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:27:02,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:27:02,451 INFO L82 PathProgramCache]: Analyzing trace with hash -671268224, now seen corresponding path program 1 times [2020-12-09 15:27:02,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:27:02,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4057045] [2020-12-09 15:27:02,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:27:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:27:02,479 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 15:27:02,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4057045] [2020-12-09 15:27:02,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:27:02,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 15:27:02,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070082008] [2020-12-09 15:27:02,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:27:02,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:27:02,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:27:02,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:27:02,481 INFO L87 Difference]: Start difference. First operand 442 states and 1320 transitions. Second operand 3 states. [2020-12-09 15:27:02,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:27:02,490 INFO L93 Difference]: Finished difference Result 400 states and 1123 transitions. [2020-12-09 15:27:02,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:27:02,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-09 15:27:02,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:27:02,492 INFO L225 Difference]: With dead ends: 400 [2020-12-09 15:27:02,493 INFO L226 Difference]: Without dead ends: 400 [2020-12-09 15:27:02,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:27:02,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-12-09 15:27:02,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2020-12-09 15:27:02,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-12-09 15:27:02,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1123 transitions. [2020-12-09 15:27:02,502 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1123 transitions. Word has length 15 [2020-12-09 15:27:02,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:27:02,503 INFO L481 AbstractCegarLoop]: Abstraction has 400 states and 1123 transitions. [2020-12-09 15:27:02,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:27:02,503 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1123 transitions. [2020-12-09 15:27:02,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 15:27:02,504 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:27:02,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:27:02,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 15:27:02,504 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:27:02,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:27:02,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1195890947, now seen corresponding path program 1 times [2020-12-09 15:27:02,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:27:02,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726370073] [2020-12-09 15:27:02,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:27:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:27:02,533 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 15:27:02,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726370073] [2020-12-09 15:27:02,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:27:02,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:27:02,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428464000] [2020-12-09 15:27:02,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 15:27:02,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:27:02,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 15:27:02,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:27:02,535 INFO L87 Difference]: Start difference. First operand 400 states and 1123 transitions. Second operand 4 states. [2020-12-09 15:27:02,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:27:02,551 INFO L93 Difference]: Finished difference Result 309 states and 779 transitions. [2020-12-09 15:27:02,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 15:27:02,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-09 15:27:02,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:27:02,553 INFO L225 Difference]: With dead ends: 309 [2020-12-09 15:27:02,553 INFO L226 Difference]: Without dead ends: 309 [2020-12-09 15:27:02,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:27:02,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-12-09 15:27:02,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2020-12-09 15:27:02,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-12-09 15:27:02,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 779 transitions. [2020-12-09 15:27:02,560 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 779 transitions. Word has length 16 [2020-12-09 15:27:02,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:27:02,560 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 779 transitions. [2020-12-09 15:27:02,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 15:27:02,560 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 779 transitions. [2020-12-09 15:27:02,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 15:27:02,561 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:27:02,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:27:02,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 15:27:02,561 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:27:02,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:27:02,562 INFO L82 PathProgramCache]: Analyzing trace with hash 852842, now seen corresponding path program 1 times [2020-12-09 15:27:02,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:27:02,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014577548] [2020-12-09 15:27:02,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:27:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:27:02,595 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 15:27:02,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014577548] [2020-12-09 15:27:02,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:27:02,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 15:27:02,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069540927] [2020-12-09 15:27:02,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:27:02,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:27:02,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:27:02,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:27:02,596 INFO L87 Difference]: Start difference. First operand 309 states and 779 transitions. Second operand 5 states. [2020-12-09 15:27:02,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:27:02,618 INFO L93 Difference]: Finished difference Result 236 states and 571 transitions. [2020-12-09 15:27:02,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:27:02,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-09 15:27:02,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:27:02,620 INFO L225 Difference]: With dead ends: 236 [2020-12-09 15:27:02,620 INFO L226 Difference]: Without dead ends: 228 [2020-12-09 15:27:02,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:27:02,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-12-09 15:27:02,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2020-12-09 15:27:02,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-12-09 15:27:02,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 537 transitions. [2020-12-09 15:27:02,625 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 537 transitions. Word has length 17 [2020-12-09 15:27:02,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:27:02,625 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 537 transitions. [2020-12-09 15:27:02,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:27:02,625 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 537 transitions. [2020-12-09 15:27:02,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 15:27:02,626 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:27:02,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:27:02,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 15:27:02,626 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:27:02,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:27:02,626 INFO L82 PathProgramCache]: Analyzing trace with hash 2041241983, now seen corresponding path program 1 times [2020-12-09 15:27:02,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:27:02,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151429531] [2020-12-09 15:27:02,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:27:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:27:02,659 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 15:27:02,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151429531] [2020-12-09 15:27:02,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:27:02,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 15:27:02,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70742213] [2020-12-09 15:27:02,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:27:02,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:27:02,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:27:02,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:27:02,661 INFO L87 Difference]: Start difference. First operand 224 states and 537 transitions. Second operand 5 states. [2020-12-09 15:27:02,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:27:02,684 INFO L93 Difference]: Finished difference Result 276 states and 638 transitions. [2020-12-09 15:27:02,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 15:27:02,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-09 15:27:02,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:27:02,685 INFO L225 Difference]: With dead ends: 276 [2020-12-09 15:27:02,685 INFO L226 Difference]: Without dead ends: 162 [2020-12-09 15:27:02,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 15:27:02,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-09 15:27:02,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 158. [2020-12-09 15:27:02,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-12-09 15:27:02,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 338 transitions. [2020-12-09 15:27:02,689 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 338 transitions. Word has length 19 [2020-12-09 15:27:02,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:27:02,689 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 338 transitions. [2020-12-09 15:27:02,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:27:02,689 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 338 transitions. [2020-12-09 15:27:02,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 15:27:02,689 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:27:02,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:27:02,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 15:27:02,690 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:27:02,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:27:02,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1152877885, now seen corresponding path program 2 times [2020-12-09 15:27:02,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:27:02,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324896391] [2020-12-09 15:27:02,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:27:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:27:02,725 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 15:27:02,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324896391] [2020-12-09 15:27:02,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:27:02,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 15:27:02,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590860962] [2020-12-09 15:27:02,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 15:27:02,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:27:02,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 15:27:02,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:27:02,727 INFO L87 Difference]: Start difference. First operand 158 states and 338 transitions. Second operand 6 states. [2020-12-09 15:27:02,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:27:02,756 INFO L93 Difference]: Finished difference Result 137 states and 298 transitions. [2020-12-09 15:27:02,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 15:27:02,757 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-09 15:27:02,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:27:02,757 INFO L225 Difference]: With dead ends: 137 [2020-12-09 15:27:02,758 INFO L226 Difference]: Without dead ends: 53 [2020-12-09 15:27:02,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:27:02,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-09 15:27:02,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-09 15:27:02,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-09 15:27:02,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 96 transitions. [2020-12-09 15:27:02,760 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 96 transitions. Word has length 19 [2020-12-09 15:27:02,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:27:02,760 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 96 transitions. [2020-12-09 15:27:02,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 15:27:02,760 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 96 transitions. [2020-12-09 15:27:02,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 15:27:02,761 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:27:02,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:27:02,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 15:27:02,761 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:27:02,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:27:02,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1281872009, now seen corresponding path program 1 times [2020-12-09 15:27:02,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:27:02,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296895551] [2020-12-09 15:27:02,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:27:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:27:02,818 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 15:27:02,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296895551] [2020-12-09 15:27:02,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:27:02,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 15:27:02,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839255764] [2020-12-09 15:27:02,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 15:27:02,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:27:02,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 15:27:02,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:27:02,820 INFO L87 Difference]: Start difference. First operand 53 states and 96 transitions. Second operand 6 states. [2020-12-09 15:27:02,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:27:02,835 INFO L93 Difference]: Finished difference Result 52 states and 95 transitions. [2020-12-09 15:27:02,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:27:02,836 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-09 15:27:02,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:27:02,836 INFO L225 Difference]: With dead ends: 52 [2020-12-09 15:27:02,836 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 15:27:02,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-09 15:27:02,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 15:27:02,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 15:27:02,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 15:27:02,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 15:27:02,837 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-12-09 15:27:02,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:27:02,837 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 15:27:02,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 15:27:02,837 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 15:27:02,837 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 15:27:02,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 15:27:02,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:27:02 BasicIcfg [2020-12-09 15:27:02,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 15:27:02,839 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 15:27:02,840 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 15:27:02,840 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 15:27:02,840 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:26:59" (3/4) ... [2020-12-09 15:27:02,842 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 15:27:02,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 15:27:02,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 15:27:02,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 15:27:02,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-09 15:27:02,851 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-09 15:27:02,851 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 15:27:02,851 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 15:27:02,851 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 15:27:02,886 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fdb8d0b1-37ba-41d4-a891-cd71b1b0dfb0/bin/utaipan/witness.graphml [2020-12-09 15:27:02,886 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 15:27:02,887 INFO L168 Benchmark]: Toolchain (without parser) took 4355.79 ms. Allocated memory was 104.9 MB in the beginning and 161.5 MB in the end (delta: 56.6 MB). Free memory was 62.7 MB in the beginning and 112.3 MB in the end (delta: -49.7 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2020-12-09 15:27:02,887 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 104.9 MB. Free memory is still 80.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 15:27:02,888 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.27 ms. Allocated memory is still 104.9 MB. Free memory was 62.5 MB in the beginning and 59.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-12-09 15:27:02,888 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.61 ms. Allocated memory is still 104.9 MB. Free memory was 58.6 MB in the beginning and 56.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 15:27:02,889 INFO L168 Benchmark]: Boogie Preprocessor took 18.54 ms. Allocated memory is still 104.9 MB. Free memory was 56.9 MB in the beginning and 55.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 15:27:02,889 INFO L168 Benchmark]: RCFGBuilder took 301.62 ms. Allocated memory is still 104.9 MB. Free memory was 55.3 MB in the beginning and 61.7 MB in the end (delta: -6.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 15:27:02,890 INFO L168 Benchmark]: TraceAbstraction took 3625.91 ms. Allocated memory was 104.9 MB in the beginning and 161.5 MB in the end (delta: 56.6 MB). Free memory was 61.1 MB in the beginning and 114.5 MB in the end (delta: -53.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-12-09 15:27:02,890 INFO L168 Benchmark]: Witness Printer took 46.56 ms. Allocated memory is still 161.5 MB. Free memory was 114.5 MB in the beginning and 112.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 15:27:02,893 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 104.9 MB. Free memory is still 80.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 329.27 ms. Allocated memory is still 104.9 MB. Free memory was 62.5 MB in the beginning and 59.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.61 ms. Allocated memory is still 104.9 MB. Free memory was 58.6 MB in the beginning and 56.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.54 ms. Allocated memory is still 104.9 MB. Free memory was 56.9 MB in the beginning and 55.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 301.62 ms. Allocated memory is still 104.9 MB. Free memory was 55.3 MB in the beginning and 61.7 MB in the end (delta: -6.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3625.91 ms. Allocated memory was 104.9 MB in the beginning and 161.5 MB in the end (delta: 56.6 MB). Free memory was 61.1 MB in the beginning and 114.5 MB in the end (delta: -53.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Witness Printer took 46.56 ms. Allocated memory is still 161.5 MB. Free memory was 114.5 MB in the beginning and 112.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1211 VarBasedMoverChecksPositive, 49 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 114 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 96 PlacesBefore, 39 PlacesAfterwards, 85 TransitionsBefore, 27 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 70 TotalNumberOfCompositions, 3411 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, 84 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 302 SDtfs, 328 SDslu, 519 SDs, 0 SdLazy, 187 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 672 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 182 NumberOfCodeBlocks, 182 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 10922 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...