./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a524f30-101d-4b1c-8a46-9c9996bdccfa/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a524f30-101d-4b1c-8a46-9c9996bdccfa/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a524f30-101d-4b1c-8a46-9c9996bdccfa/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a524f30-101d-4b1c-8a46-9c9996bdccfa/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a524f30-101d-4b1c-8a46-9c9996bdccfa/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a524f30-101d-4b1c-8a46-9c9996bdccfa/bin/utaipan-WLngWcDbfI --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 1fca60a421a39fa5f3f8d3bde13bd29dacb18de8 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:20:50,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:20:50,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:20:50,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:20:50,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:20:50,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:20:50,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:20:50,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:20:50,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:20:50,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:20:50,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:20:50,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:20:50,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:20:50,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:20:50,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:20:50,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:20:50,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:20:50,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:20:50,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:20:50,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:20:50,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:20:50,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:20:50,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:20:50,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:20:50,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:20:50,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:20:50,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:20:50,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:20:50,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:20:50,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:20:50,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:20:50,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:20:50,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:20:50,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:20:50,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:20:50,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:20:50,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:20:50,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:20:50,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:20:50,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:20:50,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:20:50,796 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a524f30-101d-4b1c-8a46-9c9996bdccfa/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:20:50,846 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:20:50,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:20:50,847 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:20:50,848 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:20:50,848 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:20:50,848 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:20:50,848 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:20:50,848 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:20:50,849 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:20:50,849 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:20:50,850 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:20:50,850 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:20:50,850 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:20:50,850 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:20:50,851 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:20:50,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:20:50,852 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:20:50,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:20:50,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:20:50,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:20:50,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:20:50,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:20:50,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:20:50,853 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:20:50,853 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:20:50,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:20:50,853 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:20:50,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:20:50,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:20:50,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:20:50,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:50,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:20:50,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:20:50,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:20:50,856 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:20:50,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:20:50,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:20:50,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:20:50,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:20:50,857 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_worker_vcloud-master_on_vcloud-master/run_dir_7a524f30-101d-4b1c-8a46-9c9996bdccfa/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a524f30-101d-4b1c-8a46-9c9996bdccfa/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fca60a421a39fa5f3f8d3bde13bd29dacb18de8 [2021-10-11 02:20:51,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:20:51,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:20:51,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:20:51,217 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:20:51,218 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:20:51,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a524f30-101d-4b1c-8a46-9c9996bdccfa/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label08.c [2021-10-11 02:20:51,279 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a524f30-101d-4b1c-8a46-9c9996bdccfa/bin/utaipan-WLngWcDbfI/data/06f18482f/870066961e444b70a41ebdc4a5dfdc4f/FLAGb956cd5da [2021-10-11 02:20:51,946 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:20:51,946 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a524f30-101d-4b1c-8a46-9c9996bdccfa/sv-benchmarks/c/eca-rers2012/Problem01_label08.c [2021-10-11 02:20:51,964 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a524f30-101d-4b1c-8a46-9c9996bdccfa/bin/utaipan-WLngWcDbfI/data/06f18482f/870066961e444b70a41ebdc4a5dfdc4f/FLAGb956cd5da [2021-10-11 02:20:52,188 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a524f30-101d-4b1c-8a46-9c9996bdccfa/bin/utaipan-WLngWcDbfI/data/06f18482f/870066961e444b70a41ebdc4a5dfdc4f [2021-10-11 02:20:52,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:20:52,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:20:52,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:52,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:20:52,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:20:52,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:52" (1/1) ... [2021-10-11 02:20:52,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@233474a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:52, skipping insertion in model container [2021-10-11 02:20:52,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:52" (1/1) ... [2021-10-11 02:20:52,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:20:52,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:20:52,631 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a524f30-101d-4b1c-8a46-9c9996bdccfa/sv-benchmarks/c/eca-rers2012/Problem01_label08.c[19599,19612] [2021-10-11 02:20:52,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:52,679 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:20:52,821 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a524f30-101d-4b1c-8a46-9c9996bdccfa/sv-benchmarks/c/eca-rers2012/Problem01_label08.c[19599,19612] [2021-10-11 02:20:52,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:52,871 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:20:52,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:52 WrapperNode [2021-10-11 02:20:52,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:52,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:52,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:20:52,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:20:52,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:52" (1/1) ... [2021-10-11 02:20:52,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:52" (1/1) ... [2021-10-11 02:20:52,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:52,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:20:52,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:20:52,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:20:53,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:52" (1/1) ... [2021-10-11 02:20:53,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:52" (1/1) ... [2021-10-11 02:20:53,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:52" (1/1) ... [2021-10-11 02:20:53,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:52" (1/1) ... [2021-10-11 02:20:53,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:52" (1/1) ... [2021-10-11 02:20:53,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:52" (1/1) ... [2021-10-11 02:20:53,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:52" (1/1) ... [2021-10-11 02:20:53,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:20:53,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:20:53,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:20:53,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:20:53,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:52" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a524f30-101d-4b1c-8a46-9c9996bdccfa/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:20:53,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:20:53,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:20:53,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:20:53,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:20:55,333 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:20:55,334 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:20:55,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:55 BoogieIcfgContainer [2021-10-11 02:20:55,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:20:55,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:20:55,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:20:55,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:20:55,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:20:52" (1/3) ... [2021-10-11 02:20:55,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f1e6d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:55, skipping insertion in model container [2021-10-11 02:20:55,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:52" (2/3) ... [2021-10-11 02:20:55,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f1e6d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:55, skipping insertion in model container [2021-10-11 02:20:55,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:55" (3/3) ... [2021-10-11 02:20:55,347 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2021-10-11 02:20:55,361 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:20:55,364 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:20:55,375 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:20:55,408 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:20:55,408 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:20:55,409 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:20:55,409 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:20:55,409 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:20:55,409 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:20:55,409 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:20:55,409 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:20:55,424 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:20:55,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:20:55,432 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:55,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:55,433 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:55,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:55,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1806908760, now seen corresponding path program 1 times [2021-10-11 02:20:55,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:55,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758831633] [2021-10-11 02:20:55,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:55,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758831633] [2021-10-11 02:20:55,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:55,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:55,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055881917] [2021-10-11 02:20:55,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:55,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:55,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:55,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:55,826 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2021-10-11 02:20:56,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:56,367 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-11 02:20:56,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:56,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2021-10-11 02:20:56,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:56,390 INFO L225 Difference]: With dead ends: 224 [2021-10-11 02:20:56,391 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:20:56,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:56,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:20:56,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-11 02:20:56,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-10-11 02:20:56,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 253 transitions. [2021-10-11 02:20:56,472 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 253 transitions. Word has length 71 [2021-10-11 02:20:56,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:56,473 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 253 transitions. [2021-10-11 02:20:56,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:56,474 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 253 transitions. [2021-10-11 02:20:56,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-11 02:20:56,479 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:56,479 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:56,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:20:56,480 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:56,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:56,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1996669024, now seen corresponding path program 1 times [2021-10-11 02:20:56,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:56,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147272761] [2021-10-11 02:20:56,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:56,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:20:56,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147272761] [2021-10-11 02:20:56,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:56,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:56,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588805394] [2021-10-11 02:20:56,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:56,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:56,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:56,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:56,681 INFO L87 Difference]: Start difference. First operand 145 states and 253 transitions. Second operand 3 states. [2021-10-11 02:20:57,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:57,116 INFO L93 Difference]: Finished difference Result 431 states and 756 transitions. [2021-10-11 02:20:57,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:57,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2021-10-11 02:20:57,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:57,121 INFO L225 Difference]: With dead ends: 431 [2021-10-11 02:20:57,121 INFO L226 Difference]: Without dead ends: 287 [2021-10-11 02:20:57,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:57,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-11 02:20:57,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-11 02:20:57,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 02:20:57,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2021-10-11 02:20:57,139 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 75 [2021-10-11 02:20:57,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:57,139 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2021-10-11 02:20:57,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:57,140 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2021-10-11 02:20:57,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-11 02:20:57,143 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:57,143 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:57,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:20:57,143 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:57,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:57,144 INFO L82 PathProgramCache]: Analyzing trace with hash 525298646, now seen corresponding path program 1 times [2021-10-11 02:20:57,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:57,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313124289] [2021-10-11 02:20:57,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:57,259 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:57,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313124289] [2021-10-11 02:20:57,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:57,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:57,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80705422] [2021-10-11 02:20:57,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:20:57,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:57,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:20:57,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:57,262 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand 4 states. [2021-10-11 02:20:57,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:57,843 INFO L93 Difference]: Finished difference Result 715 states and 1141 transitions. [2021-10-11 02:20:57,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:20:57,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2021-10-11 02:20:57,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:57,846 INFO L225 Difference]: With dead ends: 715 [2021-10-11 02:20:57,846 INFO L226 Difference]: Without dead ends: 429 [2021-10-11 02:20:57,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:57,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-10-11 02:20:57,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2021-10-11 02:20:57,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2021-10-11 02:20:57,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 639 transitions. [2021-10-11 02:20:57,869 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 639 transitions. Word has length 105 [2021-10-11 02:20:57,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:57,870 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 639 transitions. [2021-10-11 02:20:57,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:20:57,870 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 639 transitions. [2021-10-11 02:20:57,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-11 02:20:57,874 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:57,874 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:57,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:20:57,875 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:57,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:57,875 INFO L82 PathProgramCache]: Analyzing trace with hash -863062496, now seen corresponding path program 1 times [2021-10-11 02:20:57,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:57,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990387132] [2021-10-11 02:20:57,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:57,971 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-11 02:20:57,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990387132] [2021-10-11 02:20:57,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:57,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:57,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189645149] [2021-10-11 02:20:57,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:57,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:57,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:57,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:57,974 INFO L87 Difference]: Start difference. First operand 429 states and 639 transitions. Second operand 3 states. [2021-10-11 02:20:58,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:58,346 INFO L93 Difference]: Finished difference Result 999 states and 1479 transitions. [2021-10-11 02:20:58,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:58,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2021-10-11 02:20:58,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:58,356 INFO L225 Difference]: With dead ends: 999 [2021-10-11 02:20:58,356 INFO L226 Difference]: Without dead ends: 571 [2021-10-11 02:20:58,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:58,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-10-11 02:20:58,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 429. [2021-10-11 02:20:58,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2021-10-11 02:20:58,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 627 transitions. [2021-10-11 02:20:58,396 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 627 transitions. Word has length 109 [2021-10-11 02:20:58,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:58,397 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 627 transitions. [2021-10-11 02:20:58,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:58,397 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 627 transitions. [2021-10-11 02:20:58,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-11 02:20:58,409 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:58,409 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:58,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:20:58,409 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:58,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:58,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1821419992, now seen corresponding path program 1 times [2021-10-11 02:20:58,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:58,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056176624] [2021-10-11 02:20:58,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-11 02:20:58,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056176624] [2021-10-11 02:20:58,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:58,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:58,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758276806] [2021-10-11 02:20:58,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:20:58,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:58,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:20:58,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:58,507 INFO L87 Difference]: Start difference. First operand 429 states and 627 transitions. Second operand 4 states. [2021-10-11 02:20:59,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:59,091 INFO L93 Difference]: Finished difference Result 1354 states and 1955 transitions. [2021-10-11 02:20:59,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:20:59,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2021-10-11 02:20:59,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:59,096 INFO L225 Difference]: With dead ends: 1354 [2021-10-11 02:20:59,096 INFO L226 Difference]: Without dead ends: 784 [2021-10-11 02:20:59,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:59,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-10-11 02:20:59,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2021-10-11 02:20:59,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:20:59,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 997 transitions. [2021-10-11 02:20:59,121 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 997 transitions. Word has length 113 [2021-10-11 02:20:59,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:59,121 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 997 transitions. [2021-10-11 02:20:59,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:20:59,121 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 997 transitions. [2021-10-11 02:20:59,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-10-11 02:20:59,124 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:59,124 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:59,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:20:59,125 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:59,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:59,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1532019882, now seen corresponding path program 1 times [2021-10-11 02:20:59,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:59,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987582506] [2021-10-11 02:20:59,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:59,185 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-10-11 02:20:59,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987582506] [2021-10-11 02:20:59,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:59,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:59,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391051273] [2021-10-11 02:20:59,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:59,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:59,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:59,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:59,187 INFO L87 Difference]: Start difference. First operand 784 states and 997 transitions. Second operand 3 states. [2021-10-11 02:20:59,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:59,532 INFO L93 Difference]: Finished difference Result 1851 states and 2331 transitions. [2021-10-11 02:20:59,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:59,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2021-10-11 02:20:59,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:59,541 INFO L225 Difference]: With dead ends: 1851 [2021-10-11 02:20:59,541 INFO L226 Difference]: Without dead ends: 1068 [2021-10-11 02:20:59,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:59,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-10-11 02:20:59,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2021-10-11 02:20:59,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2021-10-11 02:20:59,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1174 transitions. [2021-10-11 02:20:59,568 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1174 transitions. Word has length 134 [2021-10-11 02:20:59,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:59,568 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1174 transitions. [2021-10-11 02:20:59,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:59,569 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1174 transitions. [2021-10-11 02:20:59,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-10-11 02:20:59,572 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:59,572 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:59,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:20:59,572 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:59,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:59,573 INFO L82 PathProgramCache]: Analyzing trace with hash -2034974628, now seen corresponding path program 1 times [2021-10-11 02:20:59,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:59,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782268675] [2021-10-11 02:20:59,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-10-11 02:20:59,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782268675] [2021-10-11 02:20:59,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:59,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:59,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941650562] [2021-10-11 02:20:59,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:59,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:59,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:59,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:59,654 INFO L87 Difference]: Start difference. First operand 926 states and 1174 transitions. Second operand 3 states. [2021-10-11 02:20:59,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:59,977 INFO L93 Difference]: Finished difference Result 1851 states and 2347 transitions. [2021-10-11 02:20:59,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:59,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2021-10-11 02:20:59,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:59,983 INFO L225 Difference]: With dead ends: 1851 [2021-10-11 02:20:59,983 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:20:59,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:59,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:21:00,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2021-10-11 02:21:00,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2021-10-11 02:21:00,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1160 transitions. [2021-10-11 02:21:00,010 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1160 transitions. Word has length 150 [2021-10-11 02:21:00,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:00,010 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1160 transitions. [2021-10-11 02:21:00,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:00,011 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1160 transitions. [2021-10-11 02:21:00,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-10-11 02:21:00,014 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:00,014 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:00,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:21:00,014 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:00,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:00,015 INFO L82 PathProgramCache]: Analyzing trace with hash 2113821604, now seen corresponding path program 1 times [2021-10-11 02:21:00,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:00,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084473839] [2021-10-11 02:21:00,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:00,109 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-10-11 02:21:00,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084473839] [2021-10-11 02:21:00,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:00,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:00,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533044559] [2021-10-11 02:21:00,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:00,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:00,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:00,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:00,111 INFO L87 Difference]: Start difference. First operand 926 states and 1160 transitions. Second operand 4 states. [2021-10-11 02:21:00,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:00,598 INFO L93 Difference]: Finished difference Result 1922 states and 2401 transitions. [2021-10-11 02:21:00,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:00,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2021-10-11 02:21:00,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:00,605 INFO L225 Difference]: With dead ends: 1922 [2021-10-11 02:21:00,605 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:21:00,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:00,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:21:00,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2021-10-11 02:21:00,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 02:21:00,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1229 transitions. [2021-10-11 02:21:00,638 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1229 transitions. Word has length 154 [2021-10-11 02:21:00,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:00,639 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1229 transitions. [2021-10-11 02:21:00,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:00,639 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1229 transitions. [2021-10-11 02:21:00,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-10-11 02:21:00,643 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:00,643 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:00,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:21:00,644 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:00,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:00,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1461367703, now seen corresponding path program 1 times [2021-10-11 02:21:00,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:00,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158994391] [2021-10-11 02:21:00,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:00,763 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-10-11 02:21:00,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158994391] [2021-10-11 02:21:00,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:00,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:00,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887090966] [2021-10-11 02:21:00,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:00,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:00,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:00,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:00,766 INFO L87 Difference]: Start difference. First operand 997 states and 1229 transitions. Second operand 3 states. [2021-10-11 02:21:01,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:01,120 INFO L93 Difference]: Finished difference Result 2277 states and 2822 transitions. [2021-10-11 02:21:01,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:01,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2021-10-11 02:21:01,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:01,128 INFO L225 Difference]: With dead ends: 2277 [2021-10-11 02:21:01,128 INFO L226 Difference]: Without dead ends: 1281 [2021-10-11 02:21:01,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:01,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-10-11 02:21:01,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1068. [2021-10-11 02:21:01,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2021-10-11 02:21:01,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1321 transitions. [2021-10-11 02:21:01,161 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1321 transitions. Word has length 171 [2021-10-11 02:21:01,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:01,161 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1321 transitions. [2021-10-11 02:21:01,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:01,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1321 transitions. [2021-10-11 02:21:01,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-10-11 02:21:01,166 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:01,166 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:01,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:21:01,166 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:01,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:01,167 INFO L82 PathProgramCache]: Analyzing trace with hash 577800313, now seen corresponding path program 1 times [2021-10-11 02:21:01,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:01,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329003526] [2021-10-11 02:21:01,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:01,299 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-10-11 02:21:01,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329003526] [2021-10-11 02:21:01,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:01,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:01,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049234119] [2021-10-11 02:21:01,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:01,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:01,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:01,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:01,301 INFO L87 Difference]: Start difference. First operand 1068 states and 1321 transitions. Second operand 3 states. [2021-10-11 02:21:01,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:01,659 INFO L93 Difference]: Finished difference Result 2277 states and 2794 transitions. [2021-10-11 02:21:01,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:01,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2021-10-11 02:21:01,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:01,666 INFO L225 Difference]: With dead ends: 2277 [2021-10-11 02:21:01,667 INFO L226 Difference]: Without dead ends: 1210 [2021-10-11 02:21:01,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:01,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-11 02:21:01,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2021-10-11 02:21:01,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2021-10-11 02:21:01,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1374 transitions. [2021-10-11 02:21:01,697 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1374 transitions. Word has length 233 [2021-10-11 02:21:01,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:01,698 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1374 transitions. [2021-10-11 02:21:01,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:01,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1374 transitions. [2021-10-11 02:21:01,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-10-11 02:21:01,703 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:01,703 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:01,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:21:01,703 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:01,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:01,704 INFO L82 PathProgramCache]: Analyzing trace with hash -2112701768, now seen corresponding path program 1 times [2021-10-11 02:21:01,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:01,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129787663] [2021-10-11 02:21:01,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:01,980 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 230 proven. 35 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-10-11 02:21:01,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129787663] [2021-10-11 02:21:01,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295430816] [2021-10-11 02:21:01,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a524f30-101d-4b1c-8a46-9c9996bdccfa/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:02,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:02,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:02,660 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-10-11 02:21:02,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:02,976 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-10-11 02:21:02,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:21:02,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:21:02,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583148566] [2021-10-11 02:21:02,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:02,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:02,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:02,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:21:02,979 INFO L87 Difference]: Start difference. First operand 1139 states and 1374 transitions. Second operand 3 states. [2021-10-11 02:21:03,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:03,358 INFO L93 Difference]: Finished difference Result 2490 states and 3051 transitions. [2021-10-11 02:21:03,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:03,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2021-10-11 02:21:03,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:03,368 INFO L225 Difference]: With dead ends: 2490 [2021-10-11 02:21:03,369 INFO L226 Difference]: Without dead ends: 1352 [2021-10-11 02:21:03,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 489 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:21:03,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-10-11 02:21:03,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1281. [2021-10-11 02:21:03,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2021-10-11 02:21:03,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1583 transitions. [2021-10-11 02:21:03,413 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1583 transitions. Word has length 246 [2021-10-11 02:21:03,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:03,414 INFO L481 AbstractCegarLoop]: Abstraction has 1281 states and 1583 transitions. [2021-10-11 02:21:03,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:03,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1583 transitions. [2021-10-11 02:21:03,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-10-11 02:21:03,442 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:03,443 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:03,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-11 02:21:03,652 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:03,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:03,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1304548373, now seen corresponding path program 1 times [2021-10-11 02:21:03,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:03,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401417754] [2021-10-11 02:21:03,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:04,188 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 334 proven. 153 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-11 02:21:04,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401417754] [2021-10-11 02:21:04,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093493192] [2021-10-11 02:21:04,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a524f30-101d-4b1c-8a46-9c9996bdccfa/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:04,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:04,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:04,709 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2021-10-11 02:21:04,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2021-10-11 02:21:04,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:21:04,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:21:04,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175524083] [2021-10-11 02:21:04,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:04,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:04,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:04,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:21:04,949 INFO L87 Difference]: Start difference. First operand 1281 states and 1583 transitions. Second operand 3 states. [2021-10-11 02:21:05,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:05,353 INFO L93 Difference]: Finished difference Result 2772 states and 3402 transitions. [2021-10-11 02:21:05,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:05,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 283 [2021-10-11 02:21:05,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:05,355 INFO L225 Difference]: With dead ends: 2772 [2021-10-11 02:21:05,355 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:21:05,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 564 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:21:05,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:21:05,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:21:05,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:21:05,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:21:05,359 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 283 [2021-10-11 02:21:05,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:05,359 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:21:05,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:05,359 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:21:05,360 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:21:05,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-11 02:21:05,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:21:05,785 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2021-10-11 02:21:05,922 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2021-10-11 02:21:05,925 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:21:05,925 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:21:05,926 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:21:05,926 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:21:05,926 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:21:05,926 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:21:05,926 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:21:05,926 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:21:05,926 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:21:05,926 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:21:05,927 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:21:05,927 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:21:05,927 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:21:05,927 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:21:05,927 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:21:05,927 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:21:05,927 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:21:05,928 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:21:05,928 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:21:05,928 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:21:05,928 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:21:05,928 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:21:05,928 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:21:05,928 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:21:05,928 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:21:05,929 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:21:05,929 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:21:05,929 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:21:05,929 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:21:05,929 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:21:05,929 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:21:05,929 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:21:05,930 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:21:05,930 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:21:05,930 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:21:05,930 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:21:05,930 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:21:05,930 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:21:05,930 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:21:05,930 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:21:05,931 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a16~0 6)) (.cse2 (<= 14 ~a8~0)) (.cse4 (= ~a21~0 1)) (.cse1 (= ~a20~0 1)) (.cse5 (not (= ~a7~0 1))) (.cse3 (<= ~a16~0 5)) (.cse6 (= ~a17~0 1))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse4 .cse1 .cse5 .cse6) (and .cse0 (<= 15 ~a8~0)) (and (<= ~a16~0 4) .cse1) (and .cse2 .cse4 .cse1) (and .cse3 .cse5) (and .cse3 .cse6))) [2021-10-11 02:21:05,931 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:21:05,931 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:21:05,931 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:21:05,932 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:21:05,932 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:21:05,932 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:21:05,932 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:21:05,932 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:21:05,932 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:21:05,932 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:21:05,932 INFO L262 CegarLoopResult]: For program point L521-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:21:05,933 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:21:05,933 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:21:05,933 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:21:05,933 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:21:05,933 INFO L262 CegarLoopResult]: For program point L524-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:21:05,933 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:21:05,933 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:21:05,934 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:21:05,934 INFO L262 CegarLoopResult]: For program point L525(line 525) no Hoare annotation was computed. [2021-10-11 02:21:05,934 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:21:05,934 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:21:05,934 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:21:05,934 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:21:05,934 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:21:05,934 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:21:05,935 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a16~0 6)) (.cse2 (<= 14 ~a8~0)) (.cse4 (= ~a21~0 1)) (.cse1 (= ~a20~0 1)) (.cse5 (not (= ~a7~0 1))) (.cse3 (<= ~a16~0 5)) (.cse6 (= ~a17~0 1))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse4 .cse1 .cse5 .cse6) (and .cse0 (<= 15 ~a8~0)) (and (<= ~a16~0 4) .cse1) (and .cse2 .cse4 .cse1) (and .cse3 .cse5) (and .cse3 .cse6))) [2021-10-11 02:21:05,935 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:21:05,935 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 525) no Hoare annotation was computed. [2021-10-11 02:21:05,935 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:21:05,935 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:21:05,935 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:21:05,936 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:21:05,936 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:21:05,936 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:21:05,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:21:05 BoogieIcfgContainer [2021-10-11 02:21:05,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:21:05,955 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:21:05,955 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:21:05,956 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:21:05,956 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:55" (3/4) ... [2021-10-11 02:21:05,961 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:21:05,997 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2021-10-11 02:21:05,998 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-11 02:21:06,002 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:21:06,004 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:21:06,183 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a524f30-101d-4b1c-8a46-9c9996bdccfa/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:21:06,183 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:21:06,184 INFO L168 Benchmark]: Toolchain (without parser) took 13990.99 ms. Allocated memory was 92.3 MB in the beginning and 474.0 MB in the end (delta: 381.7 MB). Free memory was 60.5 MB in the beginning and 356.1 MB in the end (delta: -295.5 MB). Peak memory consumption was 84.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:06,185 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory is still 48.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:06,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 665.42 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 60.3 MB in the beginning and 85.4 MB in the end (delta: -25.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:06,186 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.88 ms. Allocated memory is still 125.8 MB. Free memory was 85.4 MB in the beginning and 79.8 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:06,187 INFO L168 Benchmark]: Boogie Preprocessor took 83.29 ms. Allocated memory is still 125.8 MB. Free memory was 79.8 MB in the beginning and 75.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:06,187 INFO L168 Benchmark]: RCFGBuilder took 2256.40 ms. Allocated memory was 125.8 MB in the beginning and 163.6 MB in the end (delta: 37.7 MB). Free memory was 75.0 MB in the beginning and 113.7 MB in the end (delta: -38.6 MB). Peak memory consumption was 45.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:06,188 INFO L168 Benchmark]: TraceAbstraction took 10614.83 ms. Allocated memory was 163.6 MB in the beginning and 474.0 MB in the end (delta: 310.4 MB). Free memory was 113.7 MB in the beginning and 371.8 MB in the end (delta: -258.1 MB). Peak memory consumption was 52.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:06,189 INFO L168 Benchmark]: Witness Printer took 227.85 ms. Allocated memory is still 474.0 MB. Free memory was 371.8 MB in the beginning and 356.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:06,191 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory is still 48.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 665.42 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 60.3 MB in the beginning and 85.4 MB in the end (delta: -25.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 122.88 ms. Allocated memory is still 125.8 MB. Free memory was 85.4 MB in the beginning and 79.8 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.29 ms. Allocated memory is still 125.8 MB. Free memory was 79.8 MB in the beginning and 75.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2256.40 ms. Allocated memory was 125.8 MB in the beginning and 163.6 MB in the end (delta: 37.7 MB). Free memory was 75.0 MB in the beginning and 113.7 MB in the end (delta: -38.6 MB). Peak memory consumption was 45.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10614.83 ms. Allocated memory was 163.6 MB in the beginning and 474.0 MB in the end (delta: 310.4 MB). Free memory was 113.7 MB in the beginning and 371.8 MB in the end (delta: -258.1 MB). Peak memory consumption was 52.3 MB. Max. memory is 16.1 GB. * Witness Printer took 227.85 ms. Allocated memory is still 474.0 MB. Free memory was 371.8 MB in the beginning and 356.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 525]: 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 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((a16 == 6 && a20 == 1) || (14 <= a8 && a16 <= 5)) || (((a21 == 1 && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (a16 == 6 && 15 <= a8)) || (a16 <= 4 && a20 == 1)) || ((14 <= a8 && a21 == 1) && a20 == 1)) || (a16 <= 5 && !(a7 == 1))) || (a16 <= 5 && a17 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((a16 == 6 && a20 == 1) || (14 <= a8 && a16 <= 5)) || (((a21 == 1 && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (a16 == 6 && 15 <= a8)) || (a16 <= 4 && a20 == 1)) || ((14 <= a8 && a21 == 1) && a20 == 1)) || (a16 <= 5 && !(a7 == 1))) || (a16 <= 5 && a17 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.1s, OverallIterations: 12, TraceHistogramMax: 7, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 434 SDtfs, 866 SDslu, 57 SDs, 0 SdLazy, 2732 SolverSat, 703 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1091 GetRequests, 1066 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1281occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 639 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 51 NumberOfFragments, 137 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2396 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 86 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 2373 NumberOfCodeBlocks, 2373 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2886 ConstructedInterpolants, 0 QuantifiedInterpolants, 1902207 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1105 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 3524/3712 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...