./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_pso.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_43424fc4-0d4e-492c-a4c1-34a67416a345/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_43424fc4-0d4e-492c-a4c1-34a67416a345/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_43424fc4-0d4e-492c-a4c1-34a67416a345/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_43424fc4-0d4e-492c-a4c1-34a67416a345/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_43424fc4-0d4e-492c-a4c1-34a67416a345/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_43424fc4-0d4e-492c-a4c1-34a67416a345/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 42b797c7228e4cc81a806d8614f65a2608450f7f .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 05:52:00,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:52:00,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:52:00,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:52:00,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:52:00,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:52:00,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:52:00,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:52:00,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:52:00,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:52:00,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:52:00,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:52:00,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:52:00,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:52:00,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:52:00,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:52:00,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:52:00,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:52:00,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:52:00,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:52:00,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:52:00,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:52:00,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:52:00,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:52:00,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:52:00,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:52:00,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:52:00,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:52:00,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:52:00,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:52:00,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:52:00,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:52:00,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:52:00,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:52:00,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:52:00,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:52:00,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:52:00,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:52:00,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:52:00,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:52:00,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:52:00,718 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_43424fc4-0d4e-492c-a4c1-34a67416a345/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 05:52:00,741 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:52:00,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:52:00,742 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:52:00,742 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:52:00,742 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:52:00,743 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:52:00,743 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:52:00,743 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:52:00,743 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:52:00,743 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:52:00,743 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:52:00,744 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:52:00,744 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:52:00,744 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:52:00,744 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:52:00,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:52:00,745 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:52:00,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:52:00,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:52:00,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:52:00,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:52:00,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:52:00,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:52:00,746 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:52:00,746 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:52:00,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:52:00,746 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:52:00,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:52:00,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:52:00,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:52:00,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:52:00,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:52:00,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:52:00,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:52:00,748 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:52:00,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:52:00,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:52:00,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:52:00,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:52:00,749 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_43424fc4-0d4e-492c-a4c1-34a67416a345/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_43424fc4-0d4e-492c-a4c1-34a67416a345/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42b797c7228e4cc81a806d8614f65a2608450f7f [2020-12-09 05:52:00,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:52:00,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:52:00,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:52:00,959 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:52:00,959 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:52:00,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_43424fc4-0d4e-492c-a4c1-34a67416a345/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i [2020-12-09 05:52:00,999 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_43424fc4-0d4e-492c-a4c1-34a67416a345/bin/utaipan/data/a6ba9e34f/e9504fb4a000449a8a154e74ba298fe1/FLAG9bee1bc49 [2020-12-09 05:52:01,392 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:52:01,393 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_43424fc4-0d4e-492c-a4c1-34a67416a345/sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i [2020-12-09 05:52:01,405 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_43424fc4-0d4e-492c-a4c1-34a67416a345/bin/utaipan/data/a6ba9e34f/e9504fb4a000449a8a154e74ba298fe1/FLAG9bee1bc49 [2020-12-09 05:52:01,777 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_43424fc4-0d4e-492c-a4c1-34a67416a345/bin/utaipan/data/a6ba9e34f/e9504fb4a000449a8a154e74ba298fe1 [2020-12-09 05:52:01,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:52:01,782 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:52:01,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:52:01,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:52:01,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:52:01,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:52:01" (1/1) ... [2020-12-09 05:52:01,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e438380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:01, skipping insertion in model container [2020-12-09 05:52:01,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:52:01" (1/1) ... [2020-12-09 05:52:01,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:52:01,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:52:01,928 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_43424fc4-0d4e-492c-a4c1-34a67416a345/sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i[949,962] [2020-12-09 05:52:02,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:52:02,027 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:52:02,036 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_43424fc4-0d4e-492c-a4c1-34a67416a345/sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i[949,962] [2020-12-09 05:52:02,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:52:02,111 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:52:02,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:02 WrapperNode [2020-12-09 05:52:02,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:52:02,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:52:02,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:52:02,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:52:02,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:02" (1/1) ... [2020-12-09 05:52:02,127 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:02" (1/1) ... [2020-12-09 05:52:02,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:52:02,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:52:02,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:52:02,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:52:02,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:02" (1/1) ... [2020-12-09 05:52:02,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:02" (1/1) ... [2020-12-09 05:52:02,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:02" (1/1) ... [2020-12-09 05:52:02,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:02" (1/1) ... [2020-12-09 05:52:02,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:02" (1/1) ... [2020-12-09 05:52:02,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:02" (1/1) ... [2020-12-09 05:52:02,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:02" (1/1) ... [2020-12-09 05:52:02,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:52:02,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:52:02,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:52:02,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:52:02,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43424fc4-0d4e-492c-a4c1-34a67416a345/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:52:02,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 05:52:02,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 05:52:02,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:52:02,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 05:52:02,215 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 05:52:02,215 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 05:52:02,215 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 05:52:02,215 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 05:52:02,216 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 05:52:02,216 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 05:52:02,216 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-09 05:52:02,216 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-09 05:52:02,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 05:52:02,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 05:52:02,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:52:02,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:52:02,217 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-09 05:52:02,437 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:52:02,437 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 05:52:02,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:52:02 BoogieIcfgContainer [2020-12-09 05:52:02,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:52:02,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:52:02,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:52:02,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:52:02,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:52:01" (1/3) ... [2020-12-09 05:52:02,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c5d5b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:52:02, skipping insertion in model container [2020-12-09 05:52:02,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:02" (2/3) ... [2020-12-09 05:52:02,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c5d5b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:52:02, skipping insertion in model container [2020-12-09 05:52:02,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:52:02" (3/3) ... [2020-12-09 05:52:02,445 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_pso.opt.i [2020-12-09 05:52:02,454 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 05:52:02,454 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:52:02,456 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 05:52:02,457 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 05:52:02,479 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,480 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,480 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,480 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,480 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,480 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,480 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,480 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,481 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,481 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,481 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,481 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,481 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,481 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,482 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,482 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,483 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,483 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,483 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,483 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,484 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,484 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,484 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,484 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,484 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,484 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,484 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,484 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,485 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,485 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,485 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,485 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,485 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,485 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,485 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,485 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,486 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,486 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,486 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,486 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,487 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,488 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,488 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,488 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,492 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,492 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,492 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,492 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,494 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,494 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,494 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,494 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,495 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,496 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,496 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,496 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:52:02,497 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 05:52:02,505 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-09 05:52:02,520 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:52:02,520 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:52:02,520 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:52:02,520 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:52:02,520 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:52:02,520 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:52:02,520 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:52:02,520 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:52:02,529 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 05:52:02,530 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 87 transitions, 194 flow [2020-12-09 05:52:02,532 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 87 transitions, 194 flow [2020-12-09 05:52:02,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 87 transitions, 194 flow [2020-12-09 05:52:02,574 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2020-12-09 05:52:02,574 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 05:52:02,577 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 83 events. 2/83 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. 0/80 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2020-12-09 05:52:02,579 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2020-12-09 05:52:04,739 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-09 05:52:04,953 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-09 05:52:05,182 INFO L131 LiptonReduction]: Checked pairs total: 3161 [2020-12-09 05:52:05,183 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-12-09 05:52:05,187 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-12-09 05:52:05,214 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-12-09 05:52:05,215 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-12-09 05:52:05,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 05:52:05,221 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:52:05,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:52:05,222 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:52:05,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:52:05,225 INFO L82 PathProgramCache]: Analyzing trace with hash -545263439, now seen corresponding path program 1 times [2020-12-09 05:52:05,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:52:05,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909573431] [2020-12-09 05:52:05,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:52:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:52:05,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:52:05,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909573431] [2020-12-09 05:52:05,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:52:05,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 05:52:05,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409798087] [2020-12-09 05:52:05,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:52:05,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:52:05,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:52:05,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:52:05,433 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-12-09 05:52:05,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:52:05,478 INFO L93 Difference]: Finished difference Result 832 states and 2781 transitions. [2020-12-09 05:52:05,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:52:05,479 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-09 05:52:05,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:52:05,493 INFO L225 Difference]: With dead ends: 832 [2020-12-09 05:52:05,493 INFO L226 Difference]: Without dead ends: 553 [2020-12-09 05:52:05,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:52:05,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-12-09 05:52:05,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2020-12-09 05:52:05,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-12-09 05:52:05,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1851 transitions. [2020-12-09 05:52:05,559 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1851 transitions. Word has length 10 [2020-12-09 05:52:05,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:52:05,560 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 1851 transitions. [2020-12-09 05:52:05,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:52:05,560 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1851 transitions. [2020-12-09 05:52:05,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 05:52:05,561 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:52:05,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:52:05,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 05:52:05,562 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:52:05,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:52:05,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1160874164, now seen corresponding path program 1 times [2020-12-09 05:52:05,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:52:05,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850196596] [2020-12-09 05:52:05,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:52:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:52:05,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:52:05,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850196596] [2020-12-09 05:52:05,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:52:05,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:52:05,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36811300] [2020-12-09 05:52:05,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:52:05,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:52:05,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:52:05,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:52:05,632 INFO L87 Difference]: Start difference. First operand 553 states and 1851 transitions. Second operand 4 states. [2020-12-09 05:52:05,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:52:05,649 INFO L93 Difference]: Finished difference Result 526 states and 1743 transitions. [2020-12-09 05:52:05,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:52:05,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 05:52:05,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:52:05,653 INFO L225 Difference]: With dead ends: 526 [2020-12-09 05:52:05,653 INFO L226 Difference]: Without dead ends: 526 [2020-12-09 05:52:05,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 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 05:52:05,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-12-09 05:52:05,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-12-09 05:52:05,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-12-09 05:52:05,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-12-09 05:52:05,674 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 11 [2020-12-09 05:52:05,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:52:05,674 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-12-09 05:52:05,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:52:05,674 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-12-09 05:52:05,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 05:52:05,676 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:52:05,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:52:05,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 05:52:05,676 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:52:05,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:52:05,677 INFO L82 PathProgramCache]: Analyzing trace with hash 276701328, now seen corresponding path program 1 times [2020-12-09 05:52:05,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:52:05,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844181394] [2020-12-09 05:52:05,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:52:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:52:05,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:52:05,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844181394] [2020-12-09 05:52:05,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:52:05,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:52:05,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508974386] [2020-12-09 05:52:05,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:52:05,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:52:05,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:52:05,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:52:05,724 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-12-09 05:52:05,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:52:05,762 INFO L93 Difference]: Finished difference Result 611 states and 2036 transitions. [2020-12-09 05:52:05,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:52:05,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 05:52:05,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:52:05,769 INFO L225 Difference]: With dead ends: 611 [2020-12-09 05:52:05,769 INFO L226 Difference]: Without dead ends: 611 [2020-12-09 05:52:05,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:52:05,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-12-09 05:52:05,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2020-12-09 05:52:05,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-12-09 05:52:05,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 2036 transitions. [2020-12-09 05:52:05,795 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 2036 transitions. Word has length 11 [2020-12-09 05:52:05,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:52:05,796 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 2036 transitions. [2020-12-09 05:52:05,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:52:05,796 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 2036 transitions. [2020-12-09 05:52:05,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 05:52:05,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:52:05,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:52:05,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 05:52:05,798 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:52:05,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:52:05,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1446350552, now seen corresponding path program 1 times [2020-12-09 05:52:05,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:52:05,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526771149] [2020-12-09 05:52:05,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:52:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:52:05,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:52:05,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526771149] [2020-12-09 05:52:05,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:52:05,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:52:05,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246345448] [2020-12-09 05:52:05,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:52:05,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:52:05,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:52:05,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:52:05,857 INFO L87 Difference]: Start difference. First operand 611 states and 2036 transitions. Second operand 4 states. [2020-12-09 05:52:05,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:52:05,883 INFO L93 Difference]: Finished difference Result 587 states and 1942 transitions. [2020-12-09 05:52:05,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:52:05,883 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 05:52:05,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:52:05,889 INFO L225 Difference]: With dead ends: 587 [2020-12-09 05:52:05,889 INFO L226 Difference]: Without dead ends: 587 [2020-12-09 05:52:05,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 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 05:52:05,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-12-09 05:52:05,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 571. [2020-12-09 05:52:05,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-09 05:52:05,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 1884 transitions. [2020-12-09 05:52:05,913 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 1884 transitions. Word has length 12 [2020-12-09 05:52:05,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:52:05,913 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 1884 transitions. [2020-12-09 05:52:05,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:52:05,914 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 1884 transitions. [2020-12-09 05:52:05,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 05:52:05,915 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:52:05,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:52:05,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 05:52:05,915 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:52:05,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:52:05,916 INFO L82 PathProgramCache]: Analyzing trace with hash -12194237, now seen corresponding path program 1 times [2020-12-09 05:52:05,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:52:05,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226089969] [2020-12-09 05:52:05,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:52:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:52:05,967 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 05:52:05,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226089969] [2020-12-09 05:52:05,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:52:05,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:52:05,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759592980] [2020-12-09 05:52:05,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:52:05,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:52:05,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:52:05,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:52:05,970 INFO L87 Difference]: Start difference. First operand 571 states and 1884 transitions. Second operand 5 states. [2020-12-09 05:52:05,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:52:05,998 INFO L93 Difference]: Finished difference Result 736 states and 2360 transitions. [2020-12-09 05:52:05,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:52:05,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 05:52:05,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:52:06,002 INFO L225 Difference]: With dead ends: 736 [2020-12-09 05:52:06,003 INFO L226 Difference]: Without dead ends: 376 [2020-12-09 05:52:06,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:52:06,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-12-09 05:52:06,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2020-12-09 05:52:06,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-12-09 05:52:06,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1155 transitions. [2020-12-09 05:52:06,017 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1155 transitions. Word has length 12 [2020-12-09 05:52:06,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:52:06,017 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 1155 transitions. [2020-12-09 05:52:06,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:52:06,018 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1155 transitions. [2020-12-09 05:52:06,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 05:52:06,018 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:52:06,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:52:06,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 05:52:06,019 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:52:06,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:52:06,019 INFO L82 PathProgramCache]: Analyzing trace with hash 367079963, now seen corresponding path program 1 times [2020-12-09 05:52:06,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:52:06,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820072987] [2020-12-09 05:52:06,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:52:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:52:06,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:52:06,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820072987] [2020-12-09 05:52:06,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:52:06,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:52:06,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673447758] [2020-12-09 05:52:06,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:52:06,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:52:06,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:52:06,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:52:06,058 INFO L87 Difference]: Start difference. First operand 376 states and 1155 transitions. Second operand 4 states. [2020-12-09 05:52:06,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:52:06,076 INFO L93 Difference]: Finished difference Result 466 states and 1398 transitions. [2020-12-09 05:52:06,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:52:06,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-09 05:52:06,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:52:06,078 INFO L225 Difference]: With dead ends: 466 [2020-12-09 05:52:06,078 INFO L226 Difference]: Without dead ends: 226 [2020-12-09 05:52:06,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:52:06,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-09 05:52:06,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-12-09 05:52:06,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-09 05:52:06,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 651 transitions. [2020-12-09 05:52:06,084 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 651 transitions. Word has length 13 [2020-12-09 05:52:06,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:52:06,084 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 651 transitions. [2020-12-09 05:52:06,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:52:06,084 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 651 transitions. [2020-12-09 05:52:06,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 05:52:06,085 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:52:06,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:52:06,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 05:52:06,085 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:52:06,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:52:06,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1626162599, now seen corresponding path program 1 times [2020-12-09 05:52:06,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:52:06,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975112411] [2020-12-09 05:52:06,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:52:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:52:06,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:52:06,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975112411] [2020-12-09 05:52:06,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:52:06,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:52:06,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328619281] [2020-12-09 05:52:06,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:52:06,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:52:06,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:52:06,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:52:06,134 INFO L87 Difference]: Start difference. First operand 226 states and 651 transitions. Second operand 4 states. [2020-12-09 05:52:06,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:52:06,158 INFO L93 Difference]: Finished difference Result 287 states and 773 transitions. [2020-12-09 05:52:06,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:52:06,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-09 05:52:06,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:52:06,160 INFO L225 Difference]: With dead ends: 287 [2020-12-09 05:52:06,160 INFO L226 Difference]: Without dead ends: 206 [2020-12-09 05:52:06,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:52:06,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-12-09 05:52:06,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-12-09 05:52:06,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-12-09 05:52:06,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 559 transitions. [2020-12-09 05:52:06,166 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 559 transitions. Word has length 14 [2020-12-09 05:52:06,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:52:06,166 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 559 transitions. [2020-12-09 05:52:06,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:52:06,166 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 559 transitions. [2020-12-09 05:52:06,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 05:52:06,166 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:52:06,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:52:06,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 05:52:06,167 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:52:06,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:52:06,167 INFO L82 PathProgramCache]: Analyzing trace with hash 242504516, now seen corresponding path program 1 times [2020-12-09 05:52:06,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:52:06,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363142103] [2020-12-09 05:52:06,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:52:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:52:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:52:06,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363142103] [2020-12-09 05:52:06,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:52:06,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:52:06,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708521968] [2020-12-09 05:52:06,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:52:06,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:52:06,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:52:06,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:52:06,203 INFO L87 Difference]: Start difference. First operand 206 states and 559 transitions. Second operand 5 states. [2020-12-09 05:52:06,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:52:06,234 INFO L93 Difference]: Finished difference Result 227 states and 565 transitions. [2020-12-09 05:52:06,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 05:52:06,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-09 05:52:06,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:52:06,235 INFO L225 Difference]: With dead ends: 227 [2020-12-09 05:52:06,236 INFO L226 Difference]: Without dead ends: 162 [2020-12-09 05:52:06,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:52:06,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-09 05:52:06,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-12-09 05:52:06,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-09 05:52:06,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 391 transitions. [2020-12-09 05:52:06,239 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 391 transitions. Word has length 15 [2020-12-09 05:52:06,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:52:06,240 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 391 transitions. [2020-12-09 05:52:06,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:52:06,240 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 391 transitions. [2020-12-09 05:52:06,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 05:52:06,240 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:52:06,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:52:06,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 05:52:06,240 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:52:06,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:52:06,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1073574531, now seen corresponding path program 1 times [2020-12-09 05:52:06,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:52:06,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425507578] [2020-12-09 05:52:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:52:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:52:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:52:06,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425507578] [2020-12-09 05:52:06,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:52:06,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:52:06,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310588658] [2020-12-09 05:52:06,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 05:52:06,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:52:06,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 05:52:06,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:52:06,279 INFO L87 Difference]: Start difference. First operand 162 states and 391 transitions. Second operand 6 states. [2020-12-09 05:52:06,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:52:06,316 INFO L93 Difference]: Finished difference Result 158 states and 360 transitions. [2020-12-09 05:52:06,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 05:52:06,316 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-09 05:52:06,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:52:06,317 INFO L225 Difference]: With dead ends: 158 [2020-12-09 05:52:06,317 INFO L226 Difference]: Without dead ends: 125 [2020-12-09 05:52:06,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:52:06,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-09 05:52:06,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-12-09 05:52:06,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-09 05:52:06,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 282 transitions. [2020-12-09 05:52:06,322 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 282 transitions. Word has length 16 [2020-12-09 05:52:06,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:52:06,322 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 282 transitions. [2020-12-09 05:52:06,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 05:52:06,322 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 282 transitions. [2020-12-09 05:52:06,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 05:52:06,323 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:52:06,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:52:06,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 05:52:06,324 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:52:06,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:52:06,324 INFO L82 PathProgramCache]: Analyzing trace with hash -678185987, now seen corresponding path program 1 times [2020-12-09 05:52:06,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:52:06,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697462450] [2020-12-09 05:52:06,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:52:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:52:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:52:06,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697462450] [2020-12-09 05:52:06,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:52:06,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:52:06,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785301210] [2020-12-09 05:52:06,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:52:06,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:52:06,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:52:06,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:52:06,364 INFO L87 Difference]: Start difference. First operand 125 states and 282 transitions. Second operand 4 states. [2020-12-09 05:52:06,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:52:06,378 INFO L93 Difference]: Finished difference Result 166 states and 368 transitions. [2020-12-09 05:52:06,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:52:06,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-09 05:52:06,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:52:06,380 INFO L225 Difference]: With dead ends: 166 [2020-12-09 05:52:06,380 INFO L226 Difference]: Without dead ends: 127 [2020-12-09 05:52:06,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:52:06,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-09 05:52:06,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-12-09 05:52:06,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-09 05:52:06,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-12-09 05:52:06,384 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-12-09 05:52:06,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:52:06,385 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-12-09 05:52:06,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:52:06,385 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-12-09 05:52:06,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 05:52:06,386 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:52:06,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:52:06,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 05:52:06,386 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:52:06,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:52:06,386 INFO L82 PathProgramCache]: Analyzing trace with hash -972384293, now seen corresponding path program 1 times [2020-12-09 05:52:06,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:52:06,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804084435] [2020-12-09 05:52:06,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:52:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:52:06,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:52:06,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804084435] [2020-12-09 05:52:06,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:52:06,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:52:06,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19231847] [2020-12-09 05:52:06,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:52:06,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:52:06,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:52:06,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:52:06,414 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 4 states. [2020-12-09 05:52:06,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:52:06,426 INFO L93 Difference]: Finished difference Result 142 states and 293 transitions. [2020-12-09 05:52:06,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:52:06,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-09 05:52:06,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:52:06,427 INFO L225 Difference]: With dead ends: 142 [2020-12-09 05:52:06,427 INFO L226 Difference]: Without dead ends: 87 [2020-12-09 05:52:06,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:52:06,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-09 05:52:06,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2020-12-09 05:52:06,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-09 05:52:06,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 160 transitions. [2020-12-09 05:52:06,429 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 160 transitions. Word has length 18 [2020-12-09 05:52:06,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:52:06,429 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 160 transitions. [2020-12-09 05:52:06,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:52:06,429 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 160 transitions. [2020-12-09 05:52:06,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 05:52:06,430 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:52:06,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:52:06,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 05:52:06,430 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:52:06,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:52:06,430 INFO L82 PathProgramCache]: Analyzing trace with hash -2140587643, now seen corresponding path program 2 times [2020-12-09 05:52:06,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:52:06,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165310910] [2020-12-09 05:52:06,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:52:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:52:06,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:52:06,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165310910] [2020-12-09 05:52:06,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:52:06,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 05:52:06,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675295006] [2020-12-09 05:52:06,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 05:52:06,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:52:06,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 05:52:06,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:52:06,474 INFO L87 Difference]: Start difference. First operand 86 states and 160 transitions. Second operand 7 states. [2020-12-09 05:52:06,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:52:06,508 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2020-12-09 05:52:06,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 05:52:06,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-09 05:52:06,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:52:06,509 INFO L225 Difference]: With dead ends: 81 [2020-12-09 05:52:06,509 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 05:52:06,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-09 05:52:06,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 05:52:06,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 05:52:06,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 05:52:06,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 05:52:06,510 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-09 05:52:06,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:52:06,510 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 05:52:06,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 05:52:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 05:52:06,511 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 05:52:06,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 05:52:06,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:52:06 BasicIcfg [2020-12-09 05:52:06,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:52:06,514 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:52:06,514 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:52:06,514 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:52:06,514 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:52:02" (3/4) ... [2020-12-09 05:52:06,517 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 05:52:06,523 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 05:52:06,523 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 05:52:06,523 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 05:52:06,523 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-09 05:52:06,528 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-09 05:52:06,528 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 05:52:06,528 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 05:52:06,528 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 05:52:06,556 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_43424fc4-0d4e-492c-a4c1-34a67416a345/bin/utaipan/witness.graphml [2020-12-09 05:52:06,556 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:52:06,557 INFO L168 Benchmark]: Toolchain (without parser) took 4775.11 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 45.8 MB in the beginning and 31.3 MB in the end (delta: 14.5 MB). Peak memory consumption was 36.2 MB. Max. memory is 16.1 GB. [2020-12-09 05:52:06,558 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 88.1 MB. Free memory was 63.5 MB in the beginning and 63.4 MB in the end (delta: 115.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:52:06,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.01 ms. Allocated memory is still 88.1 MB. Free memory was 45.6 MB in the beginning and 60.9 MB in the end (delta: -15.3 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-12-09 05:52:06,559 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.38 ms. Allocated memory is still 88.1 MB. Free memory was 60.9 MB in the beginning and 58.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:52:06,559 INFO L168 Benchmark]: Boogie Preprocessor took 18.42 ms. Allocated memory is still 88.1 MB. Free memory was 58.8 MB in the beginning and 57.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:52:06,560 INFO L168 Benchmark]: RCFGBuilder took 278.31 ms. Allocated memory is still 88.1 MB. Free memory was 57.6 MB in the beginning and 43.8 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 05:52:06,560 INFO L168 Benchmark]: TraceAbstraction took 4073.50 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 43.3 MB in the beginning and 34.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. [2020-12-09 05:52:06,561 INFO L168 Benchmark]: Witness Printer took 42.54 ms. Allocated memory is still 107.0 MB. Free memory was 34.5 MB in the beginning and 31.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 05:52:06,563 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 88.1 MB. Free memory was 63.5 MB in the beginning and 63.4 MB in the end (delta: 115.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 327.01 ms. Allocated memory is still 88.1 MB. Free memory was 45.6 MB in the beginning and 60.9 MB in the end (delta: -15.3 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.38 ms. Allocated memory is still 88.1 MB. Free memory was 60.9 MB in the beginning and 58.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.42 ms. Allocated memory is still 88.1 MB. Free memory was 58.8 MB in the beginning and 57.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 278.31 ms. Allocated memory is still 88.1 MB. Free memory was 57.6 MB in the beginning and 43.8 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4073.50 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 43.3 MB in the beginning and 34.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. * Witness Printer took 42.54 ms. Allocated memory is still 107.0 MB. Free memory was 34.5 MB in the beginning and 31.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1210 VarBasedMoverChecksPositive, 66 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 53 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 112 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.6s, 98 PlacesBefore, 38 PlacesAfterwards, 87 TransitionsBefore, 25 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 3161 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, 86 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 256 SDtfs, 294 SDslu, 379 SDs, 0 SdLazy, 196 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred 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, 19 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 8940 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...