./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1370f03f-0c92-45b6-bbec-3cc6075453cf/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1370f03f-0c92-45b6-bbec-3cc6075453cf/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1370f03f-0c92-45b6-bbec-3cc6075453cf/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1370f03f-0c92-45b6-bbec-3cc6075453cf/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_1370f03f-0c92-45b6-bbec-3cc6075453cf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1370f03f-0c92-45b6-bbec-3cc6075453cf/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 e252dc11a493b86cf95223e578e74371b6c05709 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:06:58,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 20:06:58,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 20:06:58,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 20:06:58,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 20:06:58,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 20:06:58,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 20:06:58,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 20:06:58,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 20:06:58,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 20:06:58,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 20:06:58,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 20:06:58,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 20:06:58,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 20:06:58,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 20:06:58,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 20:06:58,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 20:06:58,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 20:06:58,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 20:06:58,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 20:06:58,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 20:06:58,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 20:06:58,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 20:06:58,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 20:06:58,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 20:06:58,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 20:06:58,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 20:06:58,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 20:06:58,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 20:06:58,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 20:06:58,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 20:06:58,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 20:06:58,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 20:06:58,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 20:06:58,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 20:06:58,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 20:06:58,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 20:06:58,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 20:06:58,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 20:06:58,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 20:06:58,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 20:06:58,634 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1370f03f-0c92-45b6-bbec-3cc6075453cf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 20:06:58,650 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 20:06:58,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 20:06:58,651 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 20:06:58,651 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 20:06:58,651 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 20:06:58,652 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 20:06:58,652 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 20:06:58,652 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 20:06:58,652 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 20:06:58,652 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 20:06:58,652 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 20:06:58,652 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 20:06:58,652 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 20:06:58,652 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 20:06:58,653 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 20:06:58,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 20:06:58,653 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 20:06:58,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 20:06:58,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 20:06:58,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 20:06:58,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 20:06:58,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 20:06:58,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 20:06:58,654 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 20:06:58,654 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 20:06:58,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 20:06:58,654 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 20:06:58,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 20:06:58,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 20:06:58,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 20:06:58,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 20:06:58,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 20:06:58,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 20:06:58,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 20:06:58,655 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 20:06:58,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 20:06:58,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 20:06:58,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 20:06:58,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 20:06:58,656 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_1370f03f-0c92-45b6-bbec-3cc6075453cf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1370f03f-0c92-45b6-bbec-3cc6075453cf/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e252dc11a493b86cf95223e578e74371b6c05709 [2020-12-09 20:06:58,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 20:06:58,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 20:06:58,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 20:06:58,850 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 20:06:58,851 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 20:06:58,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1370f03f-0c92-45b6-bbec-3cc6075453cf/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i [2020-12-09 20:06:58,891 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1370f03f-0c92-45b6-bbec-3cc6075453cf/bin/utaipan/data/178f7244d/ca0cd53e2e7b4f9586f14a381fe0a815/FLAG0dd9ab5f8 [2020-12-09 20:06:59,349 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 20:06:59,350 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1370f03f-0c92-45b6-bbec-3cc6075453cf/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i [2020-12-09 20:06:59,363 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1370f03f-0c92-45b6-bbec-3cc6075453cf/bin/utaipan/data/178f7244d/ca0cd53e2e7b4f9586f14a381fe0a815/FLAG0dd9ab5f8 [2020-12-09 20:06:59,375 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1370f03f-0c92-45b6-bbec-3cc6075453cf/bin/utaipan/data/178f7244d/ca0cd53e2e7b4f9586f14a381fe0a815 [2020-12-09 20:06:59,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 20:06:59,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 20:06:59,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 20:06:59,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 20:06:59,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 20:06:59,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:06:59" (1/1) ... [2020-12-09 20:06:59,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b68f5f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:59, skipping insertion in model container [2020-12-09 20:06:59,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:06:59" (1/1) ... [2020-12-09 20:06:59,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 20:06:59,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 20:06:59,531 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_1370f03f-0c92-45b6-bbec-3cc6075453cf/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i[950,963] [2020-12-09 20:06:59,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:06:59,631 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 20:06:59,640 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_1370f03f-0c92-45b6-bbec-3cc6075453cf/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i[950,963] [2020-12-09 20:06:59,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:06:59,717 INFO L208 MainTranslator]: Completed translation [2020-12-09 20:06:59,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:59 WrapperNode [2020-12-09 20:06:59,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 20:06:59,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 20:06:59,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 20:06:59,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 20:06:59,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:59" (1/1) ... [2020-12-09 20:06:59,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:59" (1/1) ... [2020-12-09 20:06:59,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 20:06:59,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 20:06:59,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 20:06:59,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 20:06:59,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:59" (1/1) ... [2020-12-09 20:06:59,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:59" (1/1) ... [2020-12-09 20:06:59,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:59" (1/1) ... [2020-12-09 20:06:59,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:59" (1/1) ... [2020-12-09 20:06:59,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:59" (1/1) ... [2020-12-09 20:06:59,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:59" (1/1) ... [2020-12-09 20:06:59,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:59" (1/1) ... [2020-12-09 20:06:59,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 20:06:59,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 20:06:59,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 20:06:59,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 20:06:59,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1370f03f-0c92-45b6-bbec-3cc6075453cf/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 20:06:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 20:06:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 20:06:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 20:06:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 20:06:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 20:06:59,836 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 20:06:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 20:06:59,836 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 20:06:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 20:06:59,836 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 20:06:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-09 20:06:59,836 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-09 20:06:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 20:06:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 20:06:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 20:06:59,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 20:06:59,838 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 20:07:00,114 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 20:07:00,114 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 20:07:00,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:07:00 BoogieIcfgContainer [2020-12-09 20:07:00,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 20:07:00,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 20:07:00,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 20:07:00,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 20:07:00,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:06:59" (1/3) ... [2020-12-09 20:07:00,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713e3dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:07:00, skipping insertion in model container [2020-12-09 20:07:00,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:06:59" (2/3) ... [2020-12-09 20:07:00,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713e3dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:07:00, skipping insertion in model container [2020-12-09 20:07:00,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:07:00" (3/3) ... [2020-12-09 20:07:00,121 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc.i [2020-12-09 20:07:00,131 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 20:07:00,131 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 20:07:00,133 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 20:07:00,134 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 20:07:00,159 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,159 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,159 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,159 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,160 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,160 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,160 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,160 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,161 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,161 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,161 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,161 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,162 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,162 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,162 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,162 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,162 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,162 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,162 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,163 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,163 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,163 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,163 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,164 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,164 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,164 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,164 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,164 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,165 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,165 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,165 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,166 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,166 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,166 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,166 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,166 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,167 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,167 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,167 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,167 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,167 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,168 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,168 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,168 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,168 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,168 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,169 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,169 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,171 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,171 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,171 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,171 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,175 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,175 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,175 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,176 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,177 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,177 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,177 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,177 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,183 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,183 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,184 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,184 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:07:00,185 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 20:07:00,193 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-09 20:07:00,208 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 20:07:00,208 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 20:07:00,208 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 20:07:00,208 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 20:07:00,208 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 20:07:00,208 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 20:07:00,208 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 20:07:00,208 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 20:07:00,218 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 20:07:00,220 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 87 transitions, 194 flow [2020-12-09 20:07:00,222 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 87 transitions, 194 flow [2020-12-09 20:07:00,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 87 transitions, 194 flow [2020-12-09 20:07:00,264 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2020-12-09 20:07:00,265 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 20:07:00,269 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 20:07:00,273 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2020-12-09 20:07:02,465 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-09 20:07:02,687 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-09 20:07:02,923 INFO L131 LiptonReduction]: Checked pairs total: 3161 [2020-12-09 20:07:02,923 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-12-09 20:07:02,927 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-12-09 20:07:02,957 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-12-09 20:07:02,958 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-12-09 20:07:02,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 20:07:02,964 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:07:02,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:07:02,965 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:07:02,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:07:02,968 INFO L82 PathProgramCache]: Analyzing trace with hash -545263439, now seen corresponding path program 1 times [2020-12-09 20:07:02,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:07:02,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372464415] [2020-12-09 20:07:02,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:07:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:07:03,166 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 20:07:03,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372464415] [2020-12-09 20:07:03,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:07:03,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 20:07:03,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779833415] [2020-12-09 20:07:03,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:07:03,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:07:03,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:07:03,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:07:03,181 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-12-09 20:07:03,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:07:03,228 INFO L93 Difference]: Finished difference Result 832 states and 2781 transitions. [2020-12-09 20:07:03,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:07:03,230 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-09 20:07:03,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:07:03,247 INFO L225 Difference]: With dead ends: 832 [2020-12-09 20:07:03,247 INFO L226 Difference]: Without dead ends: 553 [2020-12-09 20:07:03,248 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 20:07:03,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-12-09 20:07:03,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2020-12-09 20:07:03,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-12-09 20:07:03,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1851 transitions. [2020-12-09 20:07:03,321 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1851 transitions. Word has length 10 [2020-12-09 20:07:03,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:07:03,321 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 1851 transitions. [2020-12-09 20:07:03,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:07:03,322 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1851 transitions. [2020-12-09 20:07:03,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 20:07:03,323 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:07:03,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:07:03,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 20:07:03,323 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:07:03,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:07:03,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1160874164, now seen corresponding path program 1 times [2020-12-09 20:07:03,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:07:03,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889824387] [2020-12-09 20:07:03,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:07:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:07:03,389 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 20:07:03,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889824387] [2020-12-09 20:07:03,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:07:03,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 20:07:03,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744157155] [2020-12-09 20:07:03,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:07:03,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:07:03,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:07:03,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:07:03,391 INFO L87 Difference]: Start difference. First operand 553 states and 1851 transitions. Second operand 4 states. [2020-12-09 20:07:03,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:07:03,406 INFO L93 Difference]: Finished difference Result 526 states and 1743 transitions. [2020-12-09 20:07:03,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:07:03,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 20:07:03,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:07:03,411 INFO L225 Difference]: With dead ends: 526 [2020-12-09 20:07:03,411 INFO L226 Difference]: Without dead ends: 526 [2020-12-09 20:07:03,412 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 20:07:03,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-12-09 20:07:03,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-12-09 20:07:03,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-12-09 20:07:03,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-12-09 20:07:03,432 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 11 [2020-12-09 20:07:03,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:07:03,432 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-12-09 20:07:03,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:07:03,433 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-12-09 20:07:03,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 20:07:03,434 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:07:03,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:07:03,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 20:07:03,435 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:07:03,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:07:03,435 INFO L82 PathProgramCache]: Analyzing trace with hash 276701328, now seen corresponding path program 1 times [2020-12-09 20:07:03,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:07:03,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733432477] [2020-12-09 20:07:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:07:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:07:03,483 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 20:07:03,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733432477] [2020-12-09 20:07:03,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:07:03,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 20:07:03,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071343255] [2020-12-09 20:07:03,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:07:03,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:07:03,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:07:03,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:07:03,485 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-12-09 20:07:03,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:07:03,515 INFO L93 Difference]: Finished difference Result 611 states and 2036 transitions. [2020-12-09 20:07:03,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 20:07:03,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 20:07:03,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:07:03,520 INFO L225 Difference]: With dead ends: 611 [2020-12-09 20:07:03,520 INFO L226 Difference]: Without dead ends: 611 [2020-12-09 20:07:03,520 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 20:07:03,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-12-09 20:07:03,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2020-12-09 20:07:03,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-12-09 20:07:03,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 2036 transitions. [2020-12-09 20:07:03,539 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 2036 transitions. Word has length 11 [2020-12-09 20:07:03,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:07:03,539 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 2036 transitions. [2020-12-09 20:07:03,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:07:03,539 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 2036 transitions. [2020-12-09 20:07:03,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 20:07:03,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:07:03,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:07:03,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 20:07:03,541 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:07:03,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:07:03,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1446350552, now seen corresponding path program 1 times [2020-12-09 20:07:03,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:07:03,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673662895] [2020-12-09 20:07:03,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:07:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:07:03,586 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 20:07:03,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673662895] [2020-12-09 20:07:03,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:07:03,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 20:07:03,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582913454] [2020-12-09 20:07:03,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:07:03,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:07:03,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:07:03,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:07:03,587 INFO L87 Difference]: Start difference. First operand 611 states and 2036 transitions. Second operand 3 states. [2020-12-09 20:07:03,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:07:03,595 INFO L93 Difference]: Finished difference Result 587 states and 1942 transitions. [2020-12-09 20:07:03,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:07:03,596 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-09 20:07:03,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:07:03,601 INFO L225 Difference]: With dead ends: 587 [2020-12-09 20:07:03,601 INFO L226 Difference]: Without dead ends: 587 [2020-12-09 20:07:03,602 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 20:07:03,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-12-09 20:07:03,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 571. [2020-12-09 20:07:03,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-09 20:07:03,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 1884 transitions. [2020-12-09 20:07:03,626 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 1884 transitions. Word has length 12 [2020-12-09 20:07:03,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:07:03,626 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 1884 transitions. [2020-12-09 20:07:03,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:07:03,626 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 1884 transitions. [2020-12-09 20:07:03,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 20:07:03,627 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:07:03,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:07:03,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 20:07:03,628 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:07:03,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:07:03,628 INFO L82 PathProgramCache]: Analyzing trace with hash -12194237, now seen corresponding path program 1 times [2020-12-09 20:07:03,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:07:03,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215140571] [2020-12-09 20:07:03,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:07:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:07:03,687 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 20:07:03,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215140571] [2020-12-09 20:07:03,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:07:03,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 20:07:03,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313633618] [2020-12-09 20:07:03,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 20:07:03,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:07:03,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 20:07:03,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:07:03,689 INFO L87 Difference]: Start difference. First operand 571 states and 1884 transitions. Second operand 5 states. [2020-12-09 20:07:03,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:07:03,713 INFO L93 Difference]: Finished difference Result 736 states and 2360 transitions. [2020-12-09 20:07:03,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 20:07:03,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 20:07:03,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:07:03,717 INFO L225 Difference]: With dead ends: 736 [2020-12-09 20:07:03,717 INFO L226 Difference]: Without dead ends: 376 [2020-12-09 20:07:03,717 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 20:07:03,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-12-09 20:07:03,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2020-12-09 20:07:03,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-12-09 20:07:03,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1155 transitions. [2020-12-09 20:07:03,732 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1155 transitions. Word has length 12 [2020-12-09 20:07:03,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:07:03,732 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 1155 transitions. [2020-12-09 20:07:03,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 20:07:03,732 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1155 transitions. [2020-12-09 20:07:03,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 20:07:03,733 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:07:03,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:07:03,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 20:07:03,734 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:07:03,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:07:03,734 INFO L82 PathProgramCache]: Analyzing trace with hash 367079963, now seen corresponding path program 1 times [2020-12-09 20:07:03,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:07:03,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966768816] [2020-12-09 20:07:03,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:07:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:07:03,788 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 20:07:03,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966768816] [2020-12-09 20:07:03,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:07:03,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 20:07:03,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728012864] [2020-12-09 20:07:03,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 20:07:03,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:07:03,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 20:07:03,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:07:03,790 INFO L87 Difference]: Start difference. First operand 376 states and 1155 transitions. Second operand 5 states. [2020-12-09 20:07:03,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:07:03,814 INFO L93 Difference]: Finished difference Result 466 states and 1398 transitions. [2020-12-09 20:07:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 20:07:03,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 20:07:03,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:07:03,817 INFO L225 Difference]: With dead ends: 466 [2020-12-09 20:07:03,817 INFO L226 Difference]: Without dead ends: 226 [2020-12-09 20:07:03,817 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 20:07:03,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-09 20:07:03,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-12-09 20:07:03,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-09 20:07:03,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 651 transitions. [2020-12-09 20:07:03,826 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 651 transitions. Word has length 13 [2020-12-09 20:07:03,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:07:03,826 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 651 transitions. [2020-12-09 20:07:03,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 20:07:03,826 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 651 transitions. [2020-12-09 20:07:03,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 20:07:03,827 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:07:03,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:07:03,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 20:07:03,827 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:07:03,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:07:03,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1626162599, now seen corresponding path program 1 times [2020-12-09 20:07:03,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:07:03,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076621277] [2020-12-09 20:07:03,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:07:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:07:03,881 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 20:07:03,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076621277] [2020-12-09 20:07:03,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:07:03,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 20:07:03,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661237555] [2020-12-09 20:07:03,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:07:03,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:07:03,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:07:03,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:07:03,883 INFO L87 Difference]: Start difference. First operand 226 states and 651 transitions. Second operand 4 states. [2020-12-09 20:07:03,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:07:03,915 INFO L93 Difference]: Finished difference Result 287 states and 773 transitions. [2020-12-09 20:07:03,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 20:07:03,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-09 20:07:03,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:07:03,917 INFO L225 Difference]: With dead ends: 287 [2020-12-09 20:07:03,917 INFO L226 Difference]: Without dead ends: 206 [2020-12-09 20:07:03,918 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 20:07:03,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-12-09 20:07:03,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-12-09 20:07:03,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-12-09 20:07:03,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 559 transitions. [2020-12-09 20:07:03,925 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 559 transitions. Word has length 14 [2020-12-09 20:07:03,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:07:03,926 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 559 transitions. [2020-12-09 20:07:03,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:07:03,926 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 559 transitions. [2020-12-09 20:07:03,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 20:07:03,927 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:07:03,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:07:03,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 20:07:03,927 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:07:03,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:07:03,927 INFO L82 PathProgramCache]: Analyzing trace with hash 242504516, now seen corresponding path program 1 times [2020-12-09 20:07:03,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:07:03,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100701019] [2020-12-09 20:07:03,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:07:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:07:03,977 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 20:07:03,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100701019] [2020-12-09 20:07:03,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:07:03,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 20:07:03,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574901346] [2020-12-09 20:07:03,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 20:07:03,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:07:03,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 20:07:03,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:07:03,979 INFO L87 Difference]: Start difference. First operand 206 states and 559 transitions. Second operand 5 states. [2020-12-09 20:07:04,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:07:04,028 INFO L93 Difference]: Finished difference Result 227 states and 565 transitions. [2020-12-09 20:07:04,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 20:07:04,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-09 20:07:04,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:07:04,030 INFO L225 Difference]: With dead ends: 227 [2020-12-09 20:07:04,030 INFO L226 Difference]: Without dead ends: 162 [2020-12-09 20:07:04,031 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 20:07:04,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-09 20:07:04,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-12-09 20:07:04,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-09 20:07:04,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 391 transitions. [2020-12-09 20:07:04,036 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 391 transitions. Word has length 15 [2020-12-09 20:07:04,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:07:04,036 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 391 transitions. [2020-12-09 20:07:04,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 20:07:04,036 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 391 transitions. [2020-12-09 20:07:04,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 20:07:04,037 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:07:04,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:07:04,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 20:07:04,037 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:07:04,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:07:04,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1073574531, now seen corresponding path program 1 times [2020-12-09 20:07:04,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:07:04,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612597935] [2020-12-09 20:07:04,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:07:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:07:04,090 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 20:07:04,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612597935] [2020-12-09 20:07:04,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:07:04,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:07:04,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677904301] [2020-12-09 20:07:04,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 20:07:04,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:07:04,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 20:07:04,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 20:07:04,092 INFO L87 Difference]: Start difference. First operand 162 states and 391 transitions. Second operand 6 states. [2020-12-09 20:07:04,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:07:04,137 INFO L93 Difference]: Finished difference Result 158 states and 360 transitions. [2020-12-09 20:07:04,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 20:07:04,137 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-09 20:07:04,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:07:04,138 INFO L225 Difference]: With dead ends: 158 [2020-12-09 20:07:04,139 INFO L226 Difference]: Without dead ends: 125 [2020-12-09 20:07:04,139 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 20:07:04,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-09 20:07:04,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-12-09 20:07:04,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-09 20:07:04,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 282 transitions. [2020-12-09 20:07:04,143 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 282 transitions. Word has length 16 [2020-12-09 20:07:04,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:07:04,143 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 282 transitions. [2020-12-09 20:07:04,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 20:07:04,143 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 282 transitions. [2020-12-09 20:07:04,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 20:07:04,144 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:07:04,144 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 20:07:04,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 20:07:04,144 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:07:04,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:07:04,144 INFO L82 PathProgramCache]: Analyzing trace with hash -678185987, now seen corresponding path program 1 times [2020-12-09 20:07:04,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:07:04,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139682020] [2020-12-09 20:07:04,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:07:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:07:04,180 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 20:07:04,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139682020] [2020-12-09 20:07:04,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:07:04,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 20:07:04,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818220174] [2020-12-09 20:07:04,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:07:04,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:07:04,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:07:04,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:07:04,181 INFO L87 Difference]: Start difference. First operand 125 states and 282 transitions. Second operand 4 states. [2020-12-09 20:07:04,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:07:04,197 INFO L93 Difference]: Finished difference Result 166 states and 368 transitions. [2020-12-09 20:07:04,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 20:07:04,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-09 20:07:04,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:07:04,198 INFO L225 Difference]: With dead ends: 166 [2020-12-09 20:07:04,198 INFO L226 Difference]: Without dead ends: 127 [2020-12-09 20:07:04,199 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 20:07:04,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-09 20:07:04,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-12-09 20:07:04,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-09 20:07:04,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-12-09 20:07:04,202 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-12-09 20:07:04,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:07:04,203 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-12-09 20:07:04,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:07:04,203 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-12-09 20:07:04,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 20:07:04,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:07:04,203 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 20:07:04,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 20:07:04,204 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:07:04,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:07:04,204 INFO L82 PathProgramCache]: Analyzing trace with hash -972384293, now seen corresponding path program 1 times [2020-12-09 20:07:04,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:07:04,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979009149] [2020-12-09 20:07:04,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:07:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:07:04,239 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 20:07:04,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979009149] [2020-12-09 20:07:04,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:07:04,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 20:07:04,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644666253] [2020-12-09 20:07:04,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:07:04,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:07:04,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:07:04,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:07:04,241 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 4 states. [2020-12-09 20:07:04,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:07:04,256 INFO L93 Difference]: Finished difference Result 142 states and 293 transitions. [2020-12-09 20:07:04,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 20:07:04,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-09 20:07:04,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:07:04,258 INFO L225 Difference]: With dead ends: 142 [2020-12-09 20:07:04,258 INFO L226 Difference]: Without dead ends: 87 [2020-12-09 20:07:04,258 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 20:07:04,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-09 20:07:04,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2020-12-09 20:07:04,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-09 20:07:04,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 160 transitions. [2020-12-09 20:07:04,261 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 160 transitions. Word has length 18 [2020-12-09 20:07:04,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:07:04,261 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 160 transitions. [2020-12-09 20:07:04,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:07:04,261 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 160 transitions. [2020-12-09 20:07:04,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 20:07:04,261 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:07:04,262 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 20:07:04,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 20:07:04,262 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:07:04,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:07:04,262 INFO L82 PathProgramCache]: Analyzing trace with hash -2140587643, now seen corresponding path program 2 times [2020-12-09 20:07:04,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:07:04,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451460588] [2020-12-09 20:07:04,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:07:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:07:04,318 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 20:07:04,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451460588] [2020-12-09 20:07:04,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:07:04,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 20:07:04,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609037296] [2020-12-09 20:07:04,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 20:07:04,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:07:04,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 20:07:04,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 20:07:04,319 INFO L87 Difference]: Start difference. First operand 86 states and 160 transitions. Second operand 7 states. [2020-12-09 20:07:04,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:07:04,356 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2020-12-09 20:07:04,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 20:07:04,357 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-09 20:07:04,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:07:04,357 INFO L225 Difference]: With dead ends: 81 [2020-12-09 20:07:04,357 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 20:07:04,357 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 20:07:04,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 20:07:04,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 20:07:04,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 20:07:04,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 20:07:04,358 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-09 20:07:04,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:07:04,358 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 20:07:04,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 20:07:04,358 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 20:07:04,358 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 20:07:04,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 20:07:04,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:07:04 BasicIcfg [2020-12-09 20:07:04,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 20:07:04,362 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 20:07:04,362 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 20:07:04,362 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 20:07:04,362 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:07:00" (3/4) ... [2020-12-09 20:07:04,365 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 20:07:04,371 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 20:07:04,371 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 20:07:04,371 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 20:07:04,371 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-09 20:07:04,375 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-09 20:07:04,376 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 20:07:04,376 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 20:07:04,376 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 20:07:04,412 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1370f03f-0c92-45b6-bbec-3cc6075453cf/bin/utaipan/witness.graphml [2020-12-09 20:07:04,412 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 20:07:04,413 INFO L168 Benchmark]: Toolchain (without parser) took 5035.43 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 55.1 MB in the beginning and 42.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 60.6 MB. Max. memory is 16.1 GB. [2020-12-09 20:07:04,414 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 96.5 MB. Free memory is still 72.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:07:04,414 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.46 ms. Allocated memory is still 96.5 MB. Free memory was 55.0 MB in the beginning and 47.3 MB in the end (delta: 7.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-12-09 20:07:04,415 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.00 ms. Allocated memory is still 96.5 MB. Free memory was 47.3 MB in the beginning and 45.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:07:04,415 INFO L168 Benchmark]: Boogie Preprocessor took 18.80 ms. Allocated memory is still 96.5 MB. Free memory was 45.3 MB in the beginning and 44.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:07:04,416 INFO L168 Benchmark]: RCFGBuilder took 347.05 ms. Allocated memory is still 96.5 MB. Free memory was 44.0 MB in the beginning and 53.2 MB in the end (delta: -9.2 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. [2020-12-09 20:07:04,416 INFO L168 Benchmark]: TraceAbstraction took 4244.60 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 52.8 MB in the beginning and 45.4 MB in the end (delta: 7.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 16.1 GB. [2020-12-09 20:07:04,417 INFO L168 Benchmark]: Witness Printer took 50.95 ms. Allocated memory is still 142.6 MB. Free memory was 45.4 MB in the beginning and 42.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:07:04,419 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 96.5 MB. Free memory is still 72.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.46 ms. Allocated memory is still 96.5 MB. Free memory was 55.0 MB in the beginning and 47.3 MB in the end (delta: 7.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.00 ms. Allocated memory is still 96.5 MB. Free memory was 47.3 MB in the beginning and 45.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.80 ms. Allocated memory is still 96.5 MB. Free memory was 45.3 MB in the beginning and 44.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 347.05 ms. Allocated memory is still 96.5 MB. Free memory was 44.0 MB in the beginning and 53.2 MB in the end (delta: -9.2 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4244.60 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 52.8 MB in the beginning and 45.4 MB in the end (delta: 7.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 16.1 GB. * Witness Printer took 50.95 ms. Allocated memory is still 142.6 MB. Free memory was 45.4 MB in the beginning and 42.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1210 VarBasedMoverChecksPositive, 66 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 53 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 112 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.7s, 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: 4.1s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 256 SDtfs, 295 SDslu, 372 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, 0.4s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 8954 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...