./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label49.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_b055f357-f193-452a-b4d9-16e4264ee739/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b055f357-f193-452a-b4d9-16e4264ee739/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_b055f357-f193-452a-b4d9-16e4264ee739/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b055f357-f193-452a-b4d9-16e4264ee739/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label49.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b055f357-f193-452a-b4d9-16e4264ee739/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_b055f357-f193-452a-b4d9-16e4264ee739/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 c7e59aea7a3c4214c2070bc3dc105ace2c6879c8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:29:31,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:29:31,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:29:31,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:29:31,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:29:31,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:29:31,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:29:31,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:29:31,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:29:31,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:29:31,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:29:31,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:29:31,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:29:31,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:29:31,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:29:31,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:29:31,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:29:31,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:29:31,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:29:31,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:29:31,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:29:31,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:29:31,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:29:31,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:29:31,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:29:31,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:29:31,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:29:31,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:29:31,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:29:31,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:29:31,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:29:31,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:29:31,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:29:31,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:29:31,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:29:31,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:29:31,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:29:31,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:29:31,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:29:31,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:29:31,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:29:31,922 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b055f357-f193-452a-b4d9-16e4264ee739/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:29:31,971 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:29:31,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:29:31,972 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:29:31,972 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:29:31,973 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:29:31,973 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:29:31,973 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:29:31,973 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:29:31,979 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:29:31,980 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:29:31,980 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:29:31,980 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:29:31,980 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:29:31,980 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:29:31,981 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:29:31,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:29:31,982 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:29:31,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:29:31,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:29:31,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:29:31,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:29:31,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:29:31,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:29:31,983 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:29:31,983 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:29:31,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:29:31,983 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:29:31,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:29:31,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:29:31,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:29:31,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:31,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:29:31,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:29:31,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:29:31,985 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:29:31,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:29:31,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:29:31,985 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:29:31,986 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:29:31,986 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_b055f357-f193-452a-b4d9-16e4264ee739/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b055f357-f193-452a-b4d9-16e4264ee739/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7e59aea7a3c4214c2070bc3dc105ace2c6879c8 [2021-10-11 02:29:32,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:29:32,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:29:32,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:29:32,248 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:29:32,253 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:29:32,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b055f357-f193-452a-b4d9-16e4264ee739/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label49.c [2021-10-11 02:29:32,334 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b055f357-f193-452a-b4d9-16e4264ee739/bin/utaipan-WLngWcDbfI/data/d3b9d34bf/7df401e1178f42e8874ed04da7e4ea41/FLAG9d718817f [2021-10-11 02:29:32,986 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:29:32,987 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b055f357-f193-452a-b4d9-16e4264ee739/sv-benchmarks/c/eca-rers2012/Problem01_label49.c [2021-10-11 02:29:33,008 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b055f357-f193-452a-b4d9-16e4264ee739/bin/utaipan-WLngWcDbfI/data/d3b9d34bf/7df401e1178f42e8874ed04da7e4ea41/FLAG9d718817f [2021-10-11 02:29:33,200 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b055f357-f193-452a-b4d9-16e4264ee739/bin/utaipan-WLngWcDbfI/data/d3b9d34bf/7df401e1178f42e8874ed04da7e4ea41 [2021-10-11 02:29:33,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:29:33,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:29:33,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:33,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:29:33,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:29:33,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:33" (1/1) ... [2021-10-11 02:29:33,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@735018b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:33, skipping insertion in model container [2021-10-11 02:29:33,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:33" (1/1) ... [2021-10-11 02:29:33,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:29:33,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:29:33,699 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_b055f357-f193-452a-b4d9-16e4264ee739/sv-benchmarks/c/eca-rers2012/Problem01_label49.c[18854,18867] [2021-10-11 02:29:33,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:33,734 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:29:33,889 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_b055f357-f193-452a-b4d9-16e4264ee739/sv-benchmarks/c/eca-rers2012/Problem01_label49.c[18854,18867] [2021-10-11 02:29:33,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:33,944 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:29:33,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:33 WrapperNode [2021-10-11 02:29:33,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:33,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:33,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:29:33,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:29:33,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:33" (1/1) ... [2021-10-11 02:29:33,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:33" (1/1) ... [2021-10-11 02:29:34,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:34,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:29:34,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:29:34,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:29:34,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:33" (1/1) ... [2021-10-11 02:29:34,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:33" (1/1) ... [2021-10-11 02:29:34,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:33" (1/1) ... [2021-10-11 02:29:34,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:33" (1/1) ... [2021-10-11 02:29:34,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:33" (1/1) ... [2021-10-11 02:29:34,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:33" (1/1) ... [2021-10-11 02:29:34,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:33" (1/1) ... [2021-10-11 02:29:34,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:29:34,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:29:34,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:29:34,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:29:34,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:33" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b055f357-f193-452a-b4d9-16e4264ee739/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 02:29:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:29:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:29:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:29:34,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:29:36,429 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:29:36,430 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:29:36,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:36 BoogieIcfgContainer [2021-10-11 02:29:36,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:29:36,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:29:36,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:29:36,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:29:36,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:29:33" (1/3) ... [2021-10-11 02:29:36,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@692bb461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:36, skipping insertion in model container [2021-10-11 02:29:36,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:33" (2/3) ... [2021-10-11 02:29:36,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@692bb461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:36, skipping insertion in model container [2021-10-11 02:29:36,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:36" (3/3) ... [2021-10-11 02:29:36,446 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label49.c [2021-10-11 02:29:36,464 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:29:36,468 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:29:36,480 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:29:36,519 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:29:36,519 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:29:36,519 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:29:36,519 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:29:36,520 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:29:36,520 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:29:36,520 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:29:36,520 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:29:36,538 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:29:36,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:29:36,548 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:36,548 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 02:29:36,548 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:36,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:36,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1806910296, now seen corresponding path program 1 times [2021-10-11 02:29:36,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:36,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552004142] [2021-10-11 02:29:36,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:37,007 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 02:29:37,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552004142] [2021-10-11 02:29:37,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:37,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:29:37,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918414148] [2021-10-11 02:29:37,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:37,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:37,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:37,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:37,035 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2021-10-11 02:29:37,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:37,576 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-11 02:29:37,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:37,577 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2021-10-11 02:29:37,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:37,611 INFO L225 Difference]: With dead ends: 224 [2021-10-11 02:29:37,614 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:29:37,618 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 02:29:37,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:29:37,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-11 02:29:37,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-10-11 02:29:37,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 271 transitions. [2021-10-11 02:29:37,699 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 271 transitions. Word has length 71 [2021-10-11 02:29:37,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:37,701 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 271 transitions. [2021-10-11 02:29:37,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:37,701 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 271 transitions. [2021-10-11 02:29:37,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-11 02:29:37,707 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:37,707 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:37,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:29:37,708 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:37,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:37,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1694597950, now seen corresponding path program 1 times [2021-10-11 02:29:37,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:37,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30284114] [2021-10-11 02:29:37,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:37,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:37,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30284114] [2021-10-11 02:29:37,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:37,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:29:37,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260029015] [2021-10-11 02:29:37,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:37,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:37,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:37,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:37,827 INFO L87 Difference]: Start difference. First operand 145 states and 271 transitions. Second operand 3 states. [2021-10-11 02:29:38,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:38,246 INFO L93 Difference]: Finished difference Result 433 states and 811 transitions. [2021-10-11 02:29:38,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:38,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2021-10-11 02:29:38,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:38,251 INFO L225 Difference]: With dead ends: 433 [2021-10-11 02:29:38,252 INFO L226 Difference]: Without dead ends: 289 [2021-10-11 02:29:38,253 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 02:29:38,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-10-11 02:29:38,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2021-10-11 02:29:38,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 02:29:38,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 504 transitions. [2021-10-11 02:29:38,273 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 504 transitions. Word has length 76 [2021-10-11 02:29:38,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:38,273 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 504 transitions. [2021-10-11 02:29:38,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:38,274 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 504 transitions. [2021-10-11 02:29:38,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-11 02:29:38,277 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:38,277 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:38,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:29:38,278 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:38,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:38,278 INFO L82 PathProgramCache]: Analyzing trace with hash -143900851, now seen corresponding path program 1 times [2021-10-11 02:29:38,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:38,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62471526] [2021-10-11 02:29:38,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:38,360 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:38,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62471526] [2021-10-11 02:29:38,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:38,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:38,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123226789] [2021-10-11 02:29:38,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:38,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:38,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:38,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:38,367 INFO L87 Difference]: Start difference. First operand 287 states and 504 transitions. Second operand 4 states. [2021-10-11 02:29:38,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:38,964 INFO L93 Difference]: Finished difference Result 999 states and 1753 transitions. [2021-10-11 02:29:38,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:38,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2021-10-11 02:29:38,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:38,969 INFO L225 Difference]: With dead ends: 999 [2021-10-11 02:29:38,969 INFO L226 Difference]: Without dead ends: 713 [2021-10-11 02:29:38,971 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 02:29:38,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-10-11 02:29:39,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2021-10-11 02:29:39,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2021-10-11 02:29:39,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1106 transitions. [2021-10-11 02:29:39,009 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1106 transitions. Word has length 83 [2021-10-11 02:29:39,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:39,009 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1106 transitions. [2021-10-11 02:29:39,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:39,010 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1106 transitions. [2021-10-11 02:29:39,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-11 02:29:39,016 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:39,016 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:39,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:29:39,017 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:39,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:39,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1140303067, now seen corresponding path program 1 times [2021-10-11 02:29:39,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:39,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377794478] [2021-10-11 02:29:39,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:39,109 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:39,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377794478] [2021-10-11 02:29:39,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:39,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:29:39,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075924674] [2021-10-11 02:29:39,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:39,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:39,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:39,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:39,112 INFO L87 Difference]: Start difference. First operand 713 states and 1106 transitions. Second operand 3 states. [2021-10-11 02:29:39,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:39,477 INFO L93 Difference]: Finished difference Result 1780 states and 2693 transitions. [2021-10-11 02:29:39,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:39,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2021-10-11 02:29:39,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:39,484 INFO L225 Difference]: With dead ends: 1780 [2021-10-11 02:29:39,484 INFO L226 Difference]: Without dead ends: 1068 [2021-10-11 02:29:39,486 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 02:29:39,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-10-11 02:29:39,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 997. [2021-10-11 02:29:39,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 02:29:39,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1445 transitions. [2021-10-11 02:29:39,516 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1445 transitions. Word has length 86 [2021-10-11 02:29:39,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:39,516 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1445 transitions. [2021-10-11 02:29:39,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:39,517 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1445 transitions. [2021-10-11 02:29:39,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-11 02:29:39,521 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:39,521 INFO L422 BasicCegarLoop]: trace histogram [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, 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 02:29:39,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:29:39,521 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:39,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:39,522 INFO L82 PathProgramCache]: Analyzing trace with hash -886285033, now seen corresponding path program 1 times [2021-10-11 02:29:39,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:39,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675061143] [2021-10-11 02:29:39,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:39,614 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:29:39,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675061143] [2021-10-11 02:29:39,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:39,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:29:39,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052457806] [2021-10-11 02:29:39,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:39,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:39,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:39,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:39,616 INFO L87 Difference]: Start difference. First operand 997 states and 1445 transitions. Second operand 3 states. [2021-10-11 02:29:40,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:40,018 INFO L93 Difference]: Finished difference Result 2277 states and 3385 transitions. [2021-10-11 02:29:40,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:40,018 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2021-10-11 02:29:40,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:40,025 INFO L225 Difference]: With dead ends: 2277 [2021-10-11 02:29:40,025 INFO L226 Difference]: Without dead ends: 1281 [2021-10-11 02:29:40,027 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 02:29:40,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-10-11 02:29:40,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1281. [2021-10-11 02:29:40,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2021-10-11 02:29:40,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1613 transitions. [2021-10-11 02:29:40,077 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1613 transitions. Word has length 87 [2021-10-11 02:29:40,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:40,077 INFO L481 AbstractCegarLoop]: Abstraction has 1281 states and 1613 transitions. [2021-10-11 02:29:40,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:40,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1613 transitions. [2021-10-11 02:29:40,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-11 02:29:40,084 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:40,084 INFO L422 BasicCegarLoop]: trace histogram [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, 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 02:29:40,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:29:40,085 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:40,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:40,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1043319187, now seen corresponding path program 1 times [2021-10-11 02:29:40,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:40,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794599596] [2021-10-11 02:29:40,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:40,226 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:40,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794599596] [2021-10-11 02:29:40,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:40,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:40,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406545537] [2021-10-11 02:29:40,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:40,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:40,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:40,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:40,229 INFO L87 Difference]: Start difference. First operand 1281 states and 1613 transitions. Second operand 4 states. [2021-10-11 02:29:40,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:40,710 INFO L93 Difference]: Finished difference Result 2490 states and 3151 transitions. [2021-10-11 02:29:40,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:40,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2021-10-11 02:29:40,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:40,721 INFO L225 Difference]: With dead ends: 2490 [2021-10-11 02:29:40,721 INFO L226 Difference]: Without dead ends: 1281 [2021-10-11 02:29:40,723 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 02:29:40,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-10-11 02:29:40,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1281. [2021-10-11 02:29:40,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2021-10-11 02:29:40,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1560 transitions. [2021-10-11 02:29:40,755 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1560 transitions. Word has length 90 [2021-10-11 02:29:40,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:40,759 INFO L481 AbstractCegarLoop]: Abstraction has 1281 states and 1560 transitions. [2021-10-11 02:29:40,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:40,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1560 transitions. [2021-10-11 02:29:40,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-11 02:29:40,761 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:40,761 INFO L422 BasicCegarLoop]: trace histogram [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, 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 02:29:40,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:29:40,762 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:40,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:40,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1202873070, now seen corresponding path program 1 times [2021-10-11 02:29:40,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:40,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213347150] [2021-10-11 02:29:40,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:40,940 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:40,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213347150] [2021-10-11 02:29:40,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:40,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:40,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113295168] [2021-10-11 02:29:40,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:40,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:40,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:40,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:40,944 INFO L87 Difference]: Start difference. First operand 1281 states and 1560 transitions. Second operand 3 states. [2021-10-11 02:29:41,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:41,272 INFO L93 Difference]: Finished difference Result 2490 states and 3045 transitions. [2021-10-11 02:29:41,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:41,273 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2021-10-11 02:29:41,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:41,280 INFO L225 Difference]: With dead ends: 2490 [2021-10-11 02:29:41,280 INFO L226 Difference]: Without dead ends: 1281 [2021-10-11 02:29:41,282 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 02:29:41,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-10-11 02:29:41,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 997. [2021-10-11 02:29:41,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 02:29:41,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1159 transitions. [2021-10-11 02:29:41,311 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1159 transitions. Word has length 108 [2021-10-11 02:29:41,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:41,312 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1159 transitions. [2021-10-11 02:29:41,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:41,312 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1159 transitions. [2021-10-11 02:29:41,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-10-11 02:29:41,315 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:41,315 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:29:41,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:29:41,316 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:41,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:41,316 INFO L82 PathProgramCache]: Analyzing trace with hash 729569231, now seen corresponding path program 1 times [2021-10-11 02:29:41,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:41,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76729922] [2021-10-11 02:29:41,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:41,490 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:41,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76729922] [2021-10-11 02:29:41,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:41,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:41,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095593983] [2021-10-11 02:29:41,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:41,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:41,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:41,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:41,493 INFO L87 Difference]: Start difference. First operand 997 states and 1159 transitions. Second operand 3 states. [2021-10-11 02:29:41,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:41,829 INFO L93 Difference]: Finished difference Result 2206 states and 2586 transitions. [2021-10-11 02:29:41,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:41,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2021-10-11 02:29:41,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:41,837 INFO L225 Difference]: With dead ends: 2206 [2021-10-11 02:29:41,837 INFO L226 Difference]: Without dead ends: 1281 [2021-10-11 02:29:41,839 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 02:29:41,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-10-11 02:29:41,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1210. [2021-10-11 02:29:41,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2021-10-11 02:29:41,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1386 transitions. [2021-10-11 02:29:41,868 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1386 transitions. Word has length 155 [2021-10-11 02:29:41,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:41,869 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1386 transitions. [2021-10-11 02:29:41,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:41,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1386 transitions. [2021-10-11 02:29:41,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-10-11 02:29:41,873 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:41,873 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, 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] [2021-10-11 02:29:41,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:29:41,873 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:41,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:41,874 INFO L82 PathProgramCache]: Analyzing trace with hash 160106505, now seen corresponding path program 1 times [2021-10-11 02:29:41,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:41,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551046961] [2021-10-11 02:29:41,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:41,994 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-10-11 02:29:41,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551046961] [2021-10-11 02:29:41,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:41,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:41,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382061987] [2021-10-11 02:29:42,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:42,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:42,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:42,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:42,001 INFO L87 Difference]: Start difference. First operand 1210 states and 1386 transitions. Second operand 3 states. [2021-10-11 02:29:42,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:42,319 INFO L93 Difference]: Finished difference Result 2632 states and 3040 transitions. [2021-10-11 02:29:42,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:42,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-10-11 02:29:42,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:42,327 INFO L225 Difference]: With dead ends: 2632 [2021-10-11 02:29:42,327 INFO L226 Difference]: Without dead ends: 1494 [2021-10-11 02:29:42,329 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 02:29:42,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2021-10-11 02:29:42,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1281. [2021-10-11 02:29:42,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2021-10-11 02:29:42,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1455 transitions. [2021-10-11 02:29:42,362 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1455 transitions. Word has length 158 [2021-10-11 02:29:42,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:42,363 INFO L481 AbstractCegarLoop]: Abstraction has 1281 states and 1455 transitions. [2021-10-11 02:29:42,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:42,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1455 transitions. [2021-10-11 02:29:42,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-10-11 02:29:42,366 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:42,366 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:29:42,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:29:42,367 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:42,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:42,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1322169266, now seen corresponding path program 1 times [2021-10-11 02:29:42,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:42,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903322750] [2021-10-11 02:29:42,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:42,576 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 113 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:42,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903322750] [2021-10-11 02:29:42,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824727465] [2021-10-11 02:29:42,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b055f357-f193-452a-b4d9-16e4264ee739/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 02:29:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:42,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:29:42,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:43,081 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-10-11 02:29:43,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-10-11 02:29:43,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:29:43,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5] total 6 [2021-10-11 02:29:43,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075412871] [2021-10-11 02:29:43,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:43,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:43,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:43,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:29:43,327 INFO L87 Difference]: Start difference. First operand 1281 states and 1455 transitions. Second operand 3 states. [2021-10-11 02:29:43,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:43,652 INFO L93 Difference]: Finished difference Result 2916 states and 3349 transitions. [2021-10-11 02:29:43,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:43,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2021-10-11 02:29:43,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:43,677 INFO L225 Difference]: With dead ends: 2916 [2021-10-11 02:29:43,677 INFO L226 Difference]: Without dead ends: 1707 [2021-10-11 02:29:43,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 333 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:29:43,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-10-11 02:29:43,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 997. [2021-10-11 02:29:43,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 02:29:43,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1149 transitions. [2021-10-11 02:29:43,733 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1149 transitions. Word has length 168 [2021-10-11 02:29:43,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:43,733 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1149 transitions. [2021-10-11 02:29:43,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:43,733 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1149 transitions. [2021-10-11 02:29:43,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-10-11 02:29:43,738 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:43,738 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 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, 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] [2021-10-11 02:29:43,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:29:43,965 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:43,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:43,966 INFO L82 PathProgramCache]: Analyzing trace with hash -512694687, now seen corresponding path program 1 times [2021-10-11 02:29:43,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:43,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020857545] [2021-10-11 02:29:43,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:44,295 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 255 proven. 35 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-10-11 02:29:44,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020857545] [2021-10-11 02:29:44,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221155790] [2021-10-11 02:29:44,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b055f357-f193-452a-b4d9-16e4264ee739/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 02:29:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:44,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:29:44,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:44,760 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-10-11 02:29:44,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-10-11 02:29:45,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:29:45,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:29:45,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369648883] [2021-10-11 02:29:45,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:45,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:45,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:45,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:29:45,033 INFO L87 Difference]: Start difference. First operand 997 states and 1149 transitions. Second operand 3 states. [2021-10-11 02:29:45,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:45,339 INFO L93 Difference]: Finished difference Result 2277 states and 2650 transitions. [2021-10-11 02:29:45,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:45,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 256 [2021-10-11 02:29:45,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:45,346 INFO L225 Difference]: With dead ends: 2277 [2021-10-11 02:29:45,347 INFO L226 Difference]: Without dead ends: 1352 [2021-10-11 02:29:45,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 509 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 02:29:45,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-10-11 02:29:45,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1210. [2021-10-11 02:29:45,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2021-10-11 02:29:45,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1410 transitions. [2021-10-11 02:29:45,378 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1410 transitions. Word has length 256 [2021-10-11 02:29:45,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:45,378 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1410 transitions. [2021-10-11 02:29:45,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:45,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1410 transitions. [2021-10-11 02:29:45,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-10-11 02:29:45,383 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:45,384 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:45,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:45,597 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:45,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:45,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1878542599, now seen corresponding path program 1 times [2021-10-11 02:29:45,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:45,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613332967] [2021-10-11 02:29:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:46,213 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 270 proven. 114 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-11 02:29:46,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613332967] [2021-10-11 02:29:46,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980404063] [2021-10-11 02:29:46,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b055f357-f193-452a-b4d9-16e4264ee739/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:46,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:29:46,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:46,707 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-10-11 02:29:46,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:46,975 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-10-11 02:29:46,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:29:46,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:29:46,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651296133] [2021-10-11 02:29:46,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:46,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:46,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:46,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:29:46,978 INFO L87 Difference]: Start difference. First operand 1210 states and 1410 transitions. Second operand 3 states. [2021-10-11 02:29:47,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:47,284 INFO L93 Difference]: Finished difference Result 2559 states and 3006 transitions. [2021-10-11 02:29:47,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:47,285 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 265 [2021-10-11 02:29:47,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:47,286 INFO L225 Difference]: With dead ends: 2559 [2021-10-11 02:29:47,286 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:29:47,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 528 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:29:47,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:29:47,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:29:47,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:29:47,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:29:47,289 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 265 [2021-10-11 02:29:47,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:47,289 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:29:47,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:47,290 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:29:47,290 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:29:47,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-11 02:29:47,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:29:47,744 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2021-10-11 02:29:47,879 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2021-10-11 02:29:47,882 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:29:47,883 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:29:47,883 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:29:47,883 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:29:47,883 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:29:47,883 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:29:47,883 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:29:47,883 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:29:47,883 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:29:47,884 INFO L262 CegarLoopResult]: For program point L503-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:29:47,885 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:29:47,885 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:29:47,886 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:29:47,886 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:29:47,886 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:29:47,886 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:29:47,886 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:29:47,886 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:29:47,887 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:29:47,887 INFO L262 CegarLoopResult]: For program point L506-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:29:47,887 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:29:47,887 INFO L262 CegarLoopResult]: For program point L507(line 507) no Hoare annotation was computed. [2021-10-11 02:29:47,887 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:29:47,888 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:29:47,888 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:29:47,889 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:29:47,889 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:29:47,890 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:29:47,890 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:29:47,890 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:29:47,890 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:29:47,890 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:29:47,890 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:29:47,890 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:29:47,890 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:29:47,891 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:29:47,891 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:29:47,891 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:29:47,891 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:29:47,891 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:29:47,892 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:29:47,892 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:29:47,892 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:29:47,894 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (<= ~a16~0 4)) (.cse4 (<= 15 ~a8~0)) (.cse5 (= ~a21~0 1)) (.cse7 (= ~a16~0 6)) (.cse3 (<= ~a16~0 5)) (.cse6 (= ~a20~0 1)) (.cse1 (= ~a17~0 1)) (.cse2 (<= ~a8~0 13))) (or (and .cse0 .cse1 .cse2) (and .cse3 (not (= ~a7~0 1)) .cse4 .cse1) (and .cse5 .cse0 .cse6 .cse1) (and .cse7 .cse4 .cse1) (and .cse5 .cse7 (<= ~a7~0 0) .cse6 .cse1 .cse2) (and .cse3 .cse6 .cse1 .cse2) (= ~a17~0 0))) [2021-10-11 02:29:47,894 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:29:47,895 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:29:47,895 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:29:47,895 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:29:47,895 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:29:47,895 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:29:47,895 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:29:47,895 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:29:47,895 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:29:47,895 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:29:47,895 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:29:47,895 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:29:47,895 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:29:47,895 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:29:47,895 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:29:47,895 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:29:47,896 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:29:47,896 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:29:47,896 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:29:47,896 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:29:47,896 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:29:47,896 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:29:47,896 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:29:47,896 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (<= ~a16~0 4)) (.cse4 (<= 15 ~a8~0)) (.cse5 (= ~a21~0 1)) (.cse7 (= ~a16~0 6)) (.cse3 (<= ~a16~0 5)) (.cse6 (= ~a20~0 1)) (.cse1 (= ~a17~0 1)) (.cse2 (<= ~a8~0 13))) (or (and .cse0 .cse1 .cse2) (and .cse3 (not (= ~a7~0 1)) .cse4 .cse1) (and .cse5 .cse0 .cse6 .cse1) (and .cse7 .cse4 .cse1) (and .cse5 .cse7 (<= ~a7~0 0) .cse6 .cse1 .cse2) (and .cse3 .cse6 .cse1 .cse2) (= ~a17~0 0))) [2021-10-11 02:29:47,896 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:29:47,897 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 507) no Hoare annotation was computed. [2021-10-11 02:29:47,897 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:29:47,897 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:29:47,898 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:29:47,898 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:29:47,898 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:29:47,898 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:29:47,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:47 BoogieIcfgContainer [2021-10-11 02:29:47,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:47,935 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:47,935 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:47,935 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:47,936 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:36" (3/4) ... [2021-10-11 02:29:47,939 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:29:47,962 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2021-10-11 02:29:47,963 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:29:47,965 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:29:47,966 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:29:48,093 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b055f357-f193-452a-b4d9-16e4264ee739/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:29:48,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:48,094 INFO L168 Benchmark]: Toolchain (without parser) took 14889.88 ms. Allocated memory was 117.4 MB in the beginning and 446.7 MB in the end (delta: 329.3 MB). Free memory was 84.2 MB in the beginning and 193.0 MB in the end (delta: -108.9 MB). Peak memory consumption was 220.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:48,094 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 86.0 MB. Free memory was 42.7 MB in the beginning and 42.7 MB in the end (delta: 38.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:48,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.61 ms. Allocated memory is still 117.4 MB. Free memory was 83.9 MB in the beginning and 78.3 MB in the end (delta: 5.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:48,095 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.48 ms. Allocated memory is still 117.4 MB. Free memory was 78.3 MB in the beginning and 72.7 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:48,096 INFO L168 Benchmark]: Boogie Preprocessor took 84.12 ms. Allocated memory is still 117.4 MB. Free memory was 72.7 MB in the beginning and 67.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:48,096 INFO L168 Benchmark]: RCFGBuilder took 2307.59 ms. Allocated memory was 117.4 MB in the beginning and 157.3 MB in the end (delta: 39.8 MB). Free memory was 67.9 MB in the beginning and 96.6 MB in the end (delta: -28.7 MB). Peak memory consumption was 52.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:48,096 INFO L168 Benchmark]: TraceAbstraction took 11496.79 ms. Allocated memory was 157.3 MB in the beginning and 446.7 MB in the end (delta: 289.4 MB). Free memory was 96.6 MB in the beginning and 208.7 MB in the end (delta: -112.1 MB). Peak memory consumption was 176.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:48,097 INFO L168 Benchmark]: Witness Printer took 158.07 ms. Allocated memory is still 446.7 MB. Free memory was 208.7 MB in the beginning and 193.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:48,099 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 86.0 MB. Free memory was 42.7 MB in the beginning and 42.7 MB in the end (delta: 38.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 738.61 ms. Allocated memory is still 117.4 MB. Free memory was 83.9 MB in the beginning and 78.3 MB in the end (delta: 5.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 95.48 ms. Allocated memory is still 117.4 MB. Free memory was 78.3 MB in the beginning and 72.7 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 84.12 ms. Allocated memory is still 117.4 MB. Free memory was 72.7 MB in the beginning and 67.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2307.59 ms. Allocated memory was 117.4 MB in the beginning and 157.3 MB in the end (delta: 39.8 MB). Free memory was 67.9 MB in the beginning and 96.6 MB in the end (delta: -28.7 MB). Peak memory consumption was 52.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11496.79 ms. Allocated memory was 157.3 MB in the beginning and 446.7 MB in the end (delta: 289.4 MB). Free memory was 96.6 MB in the beginning and 208.7 MB in the end (delta: -112.1 MB). Peak memory consumption was 176.2 MB. Max. memory is 16.1 GB. * Witness Printer took 158.07 ms. Allocated memory is still 446.7 MB. Free memory was 208.7 MB in the beginning and 193.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 507]: 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 <= 4 && a17 == 1) && a8 <= 13) || (((a16 <= 5 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || (((a21 == 1 && a16 <= 4) && a20 == 1) && a17 == 1)) || ((a16 == 6 && 15 <= a8) && a17 == 1)) || (((((a21 == 1 && a16 == 6) && a7 <= 0) && a20 == 1) && a17 == 1) && a8 <= 13)) || (((a16 <= 5 && a20 == 1) && a17 == 1) && a8 <= 13)) || a17 == 0 - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((a16 <= 4 && a17 == 1) && a8 <= 13) || (((a16 <= 5 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || (((a21 == 1 && a16 <= 4) && a20 == 1) && a17 == 1)) || ((a16 == 6 && 15 <= a8) && a17 == 1)) || (((((a21 == 1 && a16 == 6) && a7 <= 0) && a20 == 1) && a17 == 1) && a8 <= 13)) || (((a16 <= 5 && a20 == 1) && a17 == 1) && a8 <= 13)) || a17 == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.9s, OverallIterations: 12, TraceHistogramMax: 7, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 596 SDtfs, 728 SDslu, 50 SDs, 0 SdLazy, 2659 SolverSat, 662 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1411 GetRequests, 1382 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1281occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 1493 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 47 NumberOfFragments, 167 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2752 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 162 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 2292 NumberOfCodeBlocks, 2292 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2963 ConstructedInterpolants, 0 QuantifiedInterpolants, 2153112 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1469 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 18 InterpolantComputations, 15 PerfectInterpolantSequences, 3085/3269 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...