./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label09.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-vcloud-master/worker/run_dir_b7743a6b-4a5d-4da6-9119-644244d4ad59/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b7743a6b-4a5d-4da6-9119-644244d4ad59/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b7743a6b-4a5d-4da6-9119-644244d4ad59/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b7743a6b-4a5d-4da6-9119-644244d4ad59/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label09.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b7743a6b-4a5d-4da6-9119-644244d4ad59/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b7743a6b-4a5d-4da6-9119-644244d4ad59/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c3bec4a19ad486e7769a1ae863b766e21c94d89f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 06:35:42,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:35:42,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:35:42,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:35:42,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:35:42,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:35:42,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:35:42,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:35:42,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:35:42,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:35:42,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:35:42,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:35:42,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:35:42,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:35:42,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:35:42,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:35:42,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:35:42,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:35:42,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:35:42,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:35:42,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:35:42,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:35:42,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:35:42,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:35:42,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:35:42,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:35:42,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:35:42,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:35:42,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:35:42,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:35:42,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:35:42,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:35:42,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:35:42,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:35:42,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:35:42,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:35:42,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:35:42,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:35:42,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:35:42,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:35:42,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:35:42,982 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b7743a6b-4a5d-4da6-9119-644244d4ad59/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 06:35:42,998 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:35:42,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:35:42,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:35:42,999 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:35:42,999 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:35:42,999 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:35:43,000 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 06:35:43,000 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:35:43,000 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:35:43,000 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 06:35:43,000 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 06:35:43,000 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:35:43,000 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 06:35:43,000 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 06:35:43,001 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 06:35:43,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:35:43,001 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:35:43,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:35:43,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:35:43,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:35:43,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:35:43,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:35:43,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:35:43,002 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:35:43,002 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:35:43,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:35:43,002 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:35:43,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:35:43,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:35:43,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:35:43,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:35:43,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:35:43,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:35:43,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:35:43,003 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 06:35:43,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 06:35:43,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:35:43,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:35:43,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:35:43,004 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_b7743a6b-4a5d-4da6-9119-644244d4ad59/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b7743a6b-4a5d-4da6-9119-644244d4ad59/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3bec4a19ad486e7769a1ae863b766e21c94d89f [2020-12-09 06:35:43,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:35:43,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:35:43,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:35:43,194 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:35:43,195 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:35:43,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b7743a6b-4a5d-4da6-9119-644244d4ad59/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label09.c [2020-12-09 06:35:43,237 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7743a6b-4a5d-4da6-9119-644244d4ad59/bin/utaipan/data/78d8f8397/ad424965354f4119b901968c33eeb25f/FLAGb060ed56d [2020-12-09 06:35:43,664 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:35:43,665 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b7743a6b-4a5d-4da6-9119-644244d4ad59/sv-benchmarks/c/eca-rers2012/Problem01_label09.c [2020-12-09 06:35:43,676 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7743a6b-4a5d-4da6-9119-644244d4ad59/bin/utaipan/data/78d8f8397/ad424965354f4119b901968c33eeb25f/FLAGb060ed56d [2020-12-09 06:35:43,688 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b7743a6b-4a5d-4da6-9119-644244d4ad59/bin/utaipan/data/78d8f8397/ad424965354f4119b901968c33eeb25f [2020-12-09 06:35:43,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:35:43,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:35:43,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:35:43,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:35:43,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:35:43,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:35:43" (1/1) ... [2020-12-09 06:35:43,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54cf0784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:43, skipping insertion in model container [2020-12-09 06:35:43,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:35:43" (1/1) ... [2020-12-09 06:35:43,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:35:43,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:35:43,967 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_b7743a6b-4a5d-4da6-9119-644244d4ad59/sv-benchmarks/c/eca-rers2012/Problem01_label09.c[20223,20236] [2020-12-09 06:35:43,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:35:43,987 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:35:44,039 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_b7743a6b-4a5d-4da6-9119-644244d4ad59/sv-benchmarks/c/eca-rers2012/Problem01_label09.c[20223,20236] [2020-12-09 06:35:44,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:35:44,056 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:35:44,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:44 WrapperNode [2020-12-09 06:35:44,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:35:44,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:35:44,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:35:44,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:35:44,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:44" (1/1) ... [2020-12-09 06:35:44,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:44" (1/1) ... [2020-12-09 06:35:44,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:35:44,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:35:44,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:35:44,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:35:44,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:44" (1/1) ... [2020-12-09 06:35:44,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:44" (1/1) ... [2020-12-09 06:35:44,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:44" (1/1) ... [2020-12-09 06:35:44,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:44" (1/1) ... [2020-12-09 06:35:44,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:44" (1/1) ... [2020-12-09 06:35:44,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:44" (1/1) ... [2020-12-09 06:35:44,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:44" (1/1) ... [2020-12-09 06:35:44,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:35:44,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:35:44,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:35:44,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:35:44,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7743a6b-4a5d-4da6-9119-644244d4ad59/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:35:44,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 06:35:44,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:35:44,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:35:44,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:35:45,538 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:35:45,539 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 06:35:45,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:35:45 BoogieIcfgContainer [2020-12-09 06:35:45,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:35:45,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:35:45,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:35:45,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:35:45,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:35:43" (1/3) ... [2020-12-09 06:35:45,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58fb0252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:35:45, skipping insertion in model container [2020-12-09 06:35:45,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:44" (2/3) ... [2020-12-09 06:35:45,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58fb0252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:35:45, skipping insertion in model container [2020-12-09 06:35:45,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:35:45" (3/3) ... [2020-12-09 06:35:45,549 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label09.c [2020-12-09 06:35:45,562 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:35:45,565 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 06:35:45,580 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 06:35:45,600 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:35:45,600 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:35:45,600 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:35:45,600 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:35:45,600 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:35:45,600 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:35:45,600 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:35:45,600 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:35:45,612 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-12-09 06:35:45,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-09 06:35:45,618 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:35:45,618 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] [2020-12-09 06:35:45,619 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:35:45,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:35:45,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1806907480, now seen corresponding path program 1 times [2020-12-09 06:35:45,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:35:45,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740021865] [2020-12-09 06:35:45,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:35:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:45,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:35:45,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740021865] [2020-12-09 06:35:45,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:35:45,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:35:45,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187301860] [2020-12-09 06:35:45,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:35:45,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:35:45,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:35:45,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:35:45,899 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-12-09 06:35:46,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:35:46,224 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-12-09 06:35:46,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:35:46,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-09 06:35:46,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:35:46,233 INFO L225 Difference]: With dead ends: 224 [2020-12-09 06:35:46,233 INFO L226 Difference]: Without dead ends: 145 [2020-12-09 06:35:46,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:35:46,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-09 06:35:46,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-12-09 06:35:46,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-09 06:35:46,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2020-12-09 06:35:46,267 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2020-12-09 06:35:46,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:35:46,268 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2020-12-09 06:35:46,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:35:46,268 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2020-12-09 06:35:46,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-09 06:35:46,270 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:35:46,270 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] [2020-12-09 06:35:46,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 06:35:46,271 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:35:46,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:35:46,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1694600766, now seen corresponding path program 1 times [2020-12-09 06:35:46,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:35:46,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610953541] [2020-12-09 06:35:46,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:35:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:46,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:35:46,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610953541] [2020-12-09 06:35:46,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:35:46,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:35:46,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806852575] [2020-12-09 06:35:46,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:35:46,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:35:46,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:35:46,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:35:46,316 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2020-12-09 06:35:46,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:35:46,571 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2020-12-09 06:35:46,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:35:46,572 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-09 06:35:46,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:35:46,574 INFO L225 Difference]: With dead ends: 431 [2020-12-09 06:35:46,574 INFO L226 Difference]: Without dead ends: 287 [2020-12-09 06:35:46,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:35:46,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-09 06:35:46,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-12-09 06:35:46,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-09 06:35:46,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 479 transitions. [2020-12-09 06:35:46,591 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 479 transitions. Word has length 76 [2020-12-09 06:35:46,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:35:46,592 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 479 transitions. [2020-12-09 06:35:46,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:35:46,592 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 479 transitions. [2020-12-09 06:35:46,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-09 06:35:46,594 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:35:46,594 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1] [2020-12-09 06:35:46,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 06:35:46,595 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:35:46,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:35:46,595 INFO L82 PathProgramCache]: Analyzing trace with hash -202232383, now seen corresponding path program 1 times [2020-12-09 06:35:46,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:35:46,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651916781] [2020-12-09 06:35:46,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:35:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:46,633 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 06:35:46,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651916781] [2020-12-09 06:35:46,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:35:46,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:35:46,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543157041] [2020-12-09 06:35:46,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:35:46,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:35:46,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:35:46,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:35:46,635 INFO L87 Difference]: Start difference. First operand 287 states and 479 transitions. Second operand 3 states. [2020-12-09 06:35:46,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:35:46,863 INFO L93 Difference]: Finished difference Result 857 states and 1434 transitions. [2020-12-09 06:35:46,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:35:46,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-09 06:35:46,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:35:46,866 INFO L225 Difference]: With dead ends: 857 [2020-12-09 06:35:46,866 INFO L226 Difference]: Without dead ends: 571 [2020-12-09 06:35:46,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:35:46,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-12-09 06:35:46,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2020-12-09 06:35:46,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-09 06:35:46,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 883 transitions. [2020-12-09 06:35:46,888 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 883 transitions. Word has length 86 [2020-12-09 06:35:46,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:35:46,888 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 883 transitions. [2020-12-09 06:35:46,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:35:46,888 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 883 transitions. [2020-12-09 06:35:46,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-09 06:35:46,892 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:35:46,892 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2020-12-09 06:35:46,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 06:35:46,892 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:35:46,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:35:46,893 INFO L82 PathProgramCache]: Analyzing trace with hash 289054859, now seen corresponding path program 1 times [2020-12-09 06:35:46,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:35:46,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153863771] [2020-12-09 06:35:46,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:35:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:46,935 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 06:35:46,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153863771] [2020-12-09 06:35:46,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:35:46,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:35:46,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840242900] [2020-12-09 06:35:46,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:35:46,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:35:46,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:35:46,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:35:46,937 INFO L87 Difference]: Start difference. First operand 571 states and 883 transitions. Second operand 3 states. [2020-12-09 06:35:47,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:35:47,227 INFO L93 Difference]: Finished difference Result 1567 states and 2438 transitions. [2020-12-09 06:35:47,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:35:47,227 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-09 06:35:47,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:35:47,232 INFO L225 Difference]: With dead ends: 1567 [2020-12-09 06:35:47,232 INFO L226 Difference]: Without dead ends: 997 [2020-12-09 06:35:47,234 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 [2020-12-09 06:35:47,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-12-09 06:35:47,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 713. [2020-12-09 06:35:47,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-12-09 06:35:47,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1044 transitions. [2020-12-09 06:35:47,255 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1044 transitions. Word has length 91 [2020-12-09 06:35:47,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:35:47,256 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1044 transitions. [2020-12-09 06:35:47,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:35:47,256 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1044 transitions. [2020-12-09 06:35:47,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-09 06:35:47,257 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:35:47,257 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:35:47,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 06:35:47,258 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:35:47,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:35:47,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1324177043, now seen corresponding path program 1 times [2020-12-09 06:35:47,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:35:47,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728036401] [2020-12-09 06:35:47,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:35:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:47,302 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:35:47,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728036401] [2020-12-09 06:35:47,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:35:47,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:35:47,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713885737] [2020-12-09 06:35:47,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:35:47,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:35:47,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:35:47,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:35:47,304 INFO L87 Difference]: Start difference. First operand 713 states and 1044 transitions. Second operand 3 states. [2020-12-09 06:35:47,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:35:47,589 INFO L93 Difference]: Finished difference Result 2064 states and 3033 transitions. [2020-12-09 06:35:47,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:35:47,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-09 06:35:47,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:35:47,594 INFO L225 Difference]: With dead ends: 2064 [2020-12-09 06:35:47,595 INFO L226 Difference]: Without dead ends: 1352 [2020-12-09 06:35:47,596 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 [2020-12-09 06:35:47,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-12-09 06:35:47,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1139. [2020-12-09 06:35:47,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-12-09 06:35:47,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1607 transitions. [2020-12-09 06:35:47,616 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1607 transitions. Word has length 94 [2020-12-09 06:35:47,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:35:47,616 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1607 transitions. [2020-12-09 06:35:47,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:35:47,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1607 transitions. [2020-12-09 06:35:47,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-09 06:35:47,618 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:35:47,618 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 06:35:47,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 06:35:47,619 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:35:47,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:35:47,619 INFO L82 PathProgramCache]: Analyzing trace with hash -720005495, now seen corresponding path program 1 times [2020-12-09 06:35:47,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:35:47,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879875234] [2020-12-09 06:35:47,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:35:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:47,664 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-09 06:35:47,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879875234] [2020-12-09 06:35:47,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:35:47,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:35:47,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237419183] [2020-12-09 06:35:47,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:35:47,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:35:47,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:35:47,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:35:47,666 INFO L87 Difference]: Start difference. First operand 1139 states and 1607 transitions. Second operand 3 states. [2020-12-09 06:35:47,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:35:47,912 INFO L93 Difference]: Finished difference Result 2419 states and 3373 transitions. [2020-12-09 06:35:47,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:35:47,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-09 06:35:47,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:35:47,917 INFO L225 Difference]: With dead ends: 2419 [2020-12-09 06:35:47,917 INFO L226 Difference]: Without dead ends: 1210 [2020-12-09 06:35:47,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:35:47,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-12-09 06:35:47,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2020-12-09 06:35:47,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-12-09 06:35:47,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1472 transitions. [2020-12-09 06:35:47,937 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1472 transitions. Word has length 98 [2020-12-09 06:35:47,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:35:47,937 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1472 transitions. [2020-12-09 06:35:47,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:35:47,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1472 transitions. [2020-12-09 06:35:47,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-09 06:35:47,939 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:35:47,940 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 06:35:47,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 06:35:47,940 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:35:47,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:35:47,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1815689775, now seen corresponding path program 1 times [2020-12-09 06:35:47,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:35:47,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296110836] [2020-12-09 06:35:47,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:35:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:47,993 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-09 06:35:47,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296110836] [2020-12-09 06:35:47,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:35:47,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:35:47,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938330432] [2020-12-09 06:35:47,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:35:47,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:35:47,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:35:47,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:35:47,995 INFO L87 Difference]: Start difference. First operand 1210 states and 1472 transitions. Second operand 4 states. [2020-12-09 06:35:48,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:35:48,318 INFO L93 Difference]: Finished difference Result 2490 states and 3044 transitions. [2020-12-09 06:35:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:35:48,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-12-09 06:35:48,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:35:48,325 INFO L225 Difference]: With dead ends: 2490 [2020-12-09 06:35:48,325 INFO L226 Difference]: Without dead ends: 1352 [2020-12-09 06:35:48,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:35:48,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-12-09 06:35:48,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1139. [2020-12-09 06:35:48,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-12-09 06:35:48,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1352 transitions. [2020-12-09 06:35:48,360 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1352 transitions. Word has length 102 [2020-12-09 06:35:48,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:35:48,361 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1352 transitions. [2020-12-09 06:35:48,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:35:48,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1352 transitions. [2020-12-09 06:35:48,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-09 06:35:48,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:35:48,364 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-12-09 06:35:48,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 06:35:48,365 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:35:48,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:35:48,365 INFO L82 PathProgramCache]: Analyzing trace with hash -785762763, now seen corresponding path program 1 times [2020-12-09 06:35:48,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:35:48,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719543606] [2020-12-09 06:35:48,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:35:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:48,419 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-12-09 06:35:48,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719543606] [2020-12-09 06:35:48,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:35:48,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:35:48,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279117395] [2020-12-09 06:35:48,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:35:48,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:35:48,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:35:48,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:35:48,421 INFO L87 Difference]: Start difference. First operand 1139 states and 1352 transitions. Second operand 3 states. [2020-12-09 06:35:48,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:35:48,649 INFO L93 Difference]: Finished difference Result 2703 states and 3253 transitions. [2020-12-09 06:35:48,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:35:48,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-12-09 06:35:48,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:35:48,656 INFO L225 Difference]: With dead ends: 2703 [2020-12-09 06:35:48,656 INFO L226 Difference]: Without dead ends: 1636 [2020-12-09 06:35:48,657 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 [2020-12-09 06:35:48,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2020-12-09 06:35:48,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1423. [2020-12-09 06:35:48,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1423 states. [2020-12-09 06:35:48,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1726 transitions. [2020-12-09 06:35:48,680 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1726 transitions. Word has length 111 [2020-12-09 06:35:48,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:35:48,680 INFO L481 AbstractCegarLoop]: Abstraction has 1423 states and 1726 transitions. [2020-12-09 06:35:48,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:35:48,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1726 transitions. [2020-12-09 06:35:48,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-09 06:35:48,683 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:35:48,683 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 06:35:48,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 06:35:48,683 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:35:48,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:35:48,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1033347089, now seen corresponding path program 1 times [2020-12-09 06:35:48,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:35:48,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543518246] [2020-12-09 06:35:48,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:35:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-12-09 06:35:48,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543518246] [2020-12-09 06:35:48,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:35:48,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:35:48,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359077315] [2020-12-09 06:35:48,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:35:48,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:35:48,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:35:48,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:35:48,740 INFO L87 Difference]: Start difference. First operand 1423 states and 1726 transitions. Second operand 3 states. [2020-12-09 06:35:48,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:35:48,953 INFO L93 Difference]: Finished difference Result 2987 states and 3627 transitions. [2020-12-09 06:35:48,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:35:48,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-12-09 06:35:48,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:35:48,961 INFO L225 Difference]: With dead ends: 2987 [2020-12-09 06:35:48,961 INFO L226 Difference]: Without dead ends: 1565 [2020-12-09 06:35:48,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:35:48,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2020-12-09 06:35:48,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2020-12-09 06:35:48,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-12-09 06:35:48,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1882 transitions. [2020-12-09 06:35:48,995 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1882 transitions. Word has length 127 [2020-12-09 06:35:48,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:35:48,996 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 1882 transitions. [2020-12-09 06:35:48,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:35:48,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1882 transitions. [2020-12-09 06:35:48,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-09 06:35:48,999 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:35:49,000 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-12-09 06:35:49,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 06:35:49,000 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:35:49,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:35:49,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1365890471, now seen corresponding path program 1 times [2020-12-09 06:35:49,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:35:49,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009248703] [2020-12-09 06:35:49,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:35:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:49,078 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-12-09 06:35:49,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009248703] [2020-12-09 06:35:49,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:35:49,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:35:49,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550486486] [2020-12-09 06:35:49,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:35:49,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:35:49,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:35:49,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:35:49,081 INFO L87 Difference]: Start difference. First operand 1565 states and 1882 transitions. Second operand 4 states. [2020-12-09 06:35:49,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:35:49,333 INFO L93 Difference]: Finished difference Result 3129 states and 3775 transitions. [2020-12-09 06:35:49,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:35:49,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-09 06:35:49,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:35:49,340 INFO L225 Difference]: With dead ends: 3129 [2020-12-09 06:35:49,340 INFO L226 Difference]: Without dead ends: 1636 [2020-12-09 06:35:49,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:35:49,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2020-12-09 06:35:49,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1565. [2020-12-09 06:35:49,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-12-09 06:35:49,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1862 transitions. [2020-12-09 06:35:49,362 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1862 transitions. Word has length 131 [2020-12-09 06:35:49,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:35:49,362 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 1862 transitions. [2020-12-09 06:35:49,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:35:49,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1862 transitions. [2020-12-09 06:35:49,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-09 06:35:49,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:35:49,364 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-09 06:35:49,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 06:35:49,365 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:35:49,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:35:49,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1083761022, now seen corresponding path program 1 times [2020-12-09 06:35:49,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:35:49,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345968621] [2020-12-09 06:35:49,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:35:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-09 06:35:49,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345968621] [2020-12-09 06:35:49,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:35:49,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:35:49,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764896801] [2020-12-09 06:35:49,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:35:49,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:35:49,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:35:49,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:35:49,450 INFO L87 Difference]: Start difference. First operand 1565 states and 1862 transitions. Second operand 3 states. [2020-12-09 06:35:49,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:35:49,651 INFO L93 Difference]: Finished difference Result 3413 states and 4101 transitions. [2020-12-09 06:35:49,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:35:49,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-12-09 06:35:49,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:35:49,657 INFO L225 Difference]: With dead ends: 3413 [2020-12-09 06:35:49,657 INFO L226 Difference]: Without dead ends: 1778 [2020-12-09 06:35:49,658 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 [2020-12-09 06:35:49,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2020-12-09 06:35:49,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1636. [2020-12-09 06:35:49,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1636 states. [2020-12-09 06:35:49,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 1946 transitions. [2020-12-09 06:35:49,690 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 1946 transitions. Word has length 148 [2020-12-09 06:35:49,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:35:49,690 INFO L481 AbstractCegarLoop]: Abstraction has 1636 states and 1946 transitions. [2020-12-09 06:35:49,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:35:49,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 1946 transitions. [2020-12-09 06:35:49,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-12-09 06:35:49,694 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:35:49,694 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 06:35:49,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 06:35:49,694 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:35:49,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:35:49,695 INFO L82 PathProgramCache]: Analyzing trace with hash -274855900, now seen corresponding path program 1 times [2020-12-09 06:35:49,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:35:49,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800465844] [2020-12-09 06:35:49,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:35:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:49,775 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-12-09 06:35:49,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800465844] [2020-12-09 06:35:49,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:35:49,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:35:49,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784132751] [2020-12-09 06:35:49,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:35:49,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:35:49,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:35:49,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:35:49,777 INFO L87 Difference]: Start difference. First operand 1636 states and 1946 transitions. Second operand 3 states. [2020-12-09 06:35:49,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:35:49,963 INFO L93 Difference]: Finished difference Result 3342 states and 3975 transitions. [2020-12-09 06:35:49,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:35:49,963 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2020-12-09 06:35:49,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:35:49,969 INFO L225 Difference]: With dead ends: 3342 [2020-12-09 06:35:49,969 INFO L226 Difference]: Without dead ends: 1778 [2020-12-09 06:35:49,970 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 [2020-12-09 06:35:49,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2020-12-09 06:35:49,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1707. [2020-12-09 06:35:49,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1707 states. [2020-12-09 06:35:49,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 1971 transitions. [2020-12-09 06:35:49,990 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 1971 transitions. Word has length 191 [2020-12-09 06:35:49,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:35:49,990 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 1971 transitions. [2020-12-09 06:35:49,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:35:49,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 1971 transitions. [2020-12-09 06:35:49,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-12-09 06:35:49,993 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:35:49,993 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2020-12-09 06:35:49,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 06:35:49,993 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:35:49,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:35:49,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1630202147, now seen corresponding path program 1 times [2020-12-09 06:35:49,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:35:49,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293620246] [2020-12-09 06:35:49,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:35:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:50,130 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 194 proven. 35 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-12-09 06:35:50,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293620246] [2020-12-09 06:35:50,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688073378] [2020-12-09 06:35:50,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7743a6b-4a5d-4da6-9119-644244d4ad59/bin/utaipan/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 [2020-12-09 06:35:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:50,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 06:35:50,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:35:50,409 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-12-09 06:35:50,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:35:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-12-09 06:35:50,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 06:35:50,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-12-09 06:35:50,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359119532] [2020-12-09 06:35:50,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:35:50,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:35:50,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:35:50,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:35:50,545 INFO L87 Difference]: Start difference. First operand 1707 states and 1971 transitions. Second operand 3 states. [2020-12-09 06:35:50,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:35:50,770 INFO L93 Difference]: Finished difference Result 3413 states and 3953 transitions. [2020-12-09 06:35:50,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:35:50,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-12-09 06:35:50,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:35:50,776 INFO L225 Difference]: With dead ends: 3413 [2020-12-09 06:35:50,776 INFO L226 Difference]: Without dead ends: 1778 [2020-12-09 06:35:50,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 405 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:35:50,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2020-12-09 06:35:50,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1565. [2020-12-09 06:35:50,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-12-09 06:35:50,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1798 transitions. [2020-12-09 06:35:50,807 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1798 transitions. Word has length 204 [2020-12-09 06:35:50,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:35:50,807 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 1798 transitions. [2020-12-09 06:35:50,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:35:50,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1798 transitions. [2020-12-09 06:35:50,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-12-09 06:35:50,810 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:35:50,811 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 06:35:51,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-09 06:35:51,013 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:35:51,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:35:51,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1501975995, now seen corresponding path program 1 times [2020-12-09 06:35:51,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:35:51,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581424950] [2020-12-09 06:35:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:35:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:51,445 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 175 proven. 83 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-09 06:35:51,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581424950] [2020-12-09 06:35:51,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294800361] [2020-12-09 06:35:51,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7743a6b-4a5d-4da6-9119-644244d4ad59/bin/utaipan/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 [2020-12-09 06:35:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:51,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 06:35:51,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:35:51,675 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-12-09 06:35:51,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:35:51,785 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-12-09 06:35:51,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 06:35:51,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 8 [2020-12-09 06:35:51,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074006621] [2020-12-09 06:35:51,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:35:51,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:35:51,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:35:51,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-09 06:35:51,787 INFO L87 Difference]: Start difference. First operand 1565 states and 1798 transitions. Second operand 4 states. [2020-12-09 06:35:52,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:35:52,085 INFO L93 Difference]: Finished difference Result 3482 states and 4042 transitions. [2020-12-09 06:35:52,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:35:52,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 213 [2020-12-09 06:35:52,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:35:52,086 INFO L225 Difference]: With dead ends: 3482 [2020-12-09 06:35:52,086 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 06:35:52,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-09 06:35:52,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 06:35:52,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 06:35:52,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 06:35:52,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 06:35:52,089 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 213 [2020-12-09 06:35:52,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:35:52,089 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 06:35:52,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:35:52,089 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 06:35:52,089 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 06:35:52,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-09 06:35:52,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 06:35:52,565 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2020-12-09 06:35:52,713 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2020-12-09 06:35:52,715 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-12-09 06:35:52,715 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-12-09 06:35:52,715 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-12-09 06:35:52,715 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-12-09 06:35:52,715 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-12-09 06:35:52,715 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-12-09 06:35:52,715 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-12-09 06:35:52,715 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-12-09 06:35:52,715 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-12-09 06:35:52,715 INFO L262 CegarLoopResult]: For program point L536-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 06:35:52,715 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-12-09 06:35:52,715 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-12-09 06:35:52,716 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-12-09 06:35:52,716 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-12-09 06:35:52,716 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-12-09 06:35:52,716 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-12-09 06:35:52,716 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-12-09 06:35:52,716 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-12-09 06:35:52,716 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-12-09 06:35:52,716 INFO L262 CegarLoopResult]: For program point L539-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 06:35:52,716 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-12-09 06:35:52,716 INFO L262 CegarLoopResult]: For program point L540(line 540) no Hoare annotation was computed. [2020-12-09 06:35:52,716 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-12-09 06:35:52,717 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-12-09 06:35:52,717 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-12-09 06:35:52,717 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-12-09 06:35:52,717 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-12-09 06:35:52,717 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-12-09 06:35:52,717 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-12-09 06:35:52,717 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-12-09 06:35:52,717 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-12-09 06:35:52,717 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-12-09 06:35:52,717 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-12-09 06:35:52,718 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-12-09 06:35:52,718 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-12-09 06:35:52,718 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-12-09 06:35:52,718 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-12-09 06:35:52,718 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-12-09 06:35:52,718 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-12-09 06:35:52,718 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 06:35:52,718 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-12-09 06:35:52,718 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-12-09 06:35:52,718 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-12-09 06:35:52,719 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse2 (= ~a20~0 1)) (.cse6 (= ~a17~0 1))) (let ((.cse0 (< 13 ~a8~0)) (.cse3 (let ((.cse8 (<= ~a8~0 13))) (or (and .cse2 .cse8) (and .cse6 .cse8)))) (.cse4 (= ~a16~0 6)) (.cse1 (= ~a21~0 1)) (.cse5 (<= ~a16~0 5)) (.cse7 (<= ~a7~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4) (and .cse0 .cse5) (<= ~a16~0 4) (and .cse3 .cse2 .cse6) (and .cse4 (<= 15 ~a8~0)) (and .cse1 .cse7 .cse2) (and .cse5 .cse7)))) [2020-12-09 06:35:52,719 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-12-09 06:35:52,719 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-12-09 06:35:52,719 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-12-09 06:35:52,719 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-12-09 06:35:52,719 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-12-09 06:35:52,719 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-12-09 06:35:52,719 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-12-09 06:35:52,720 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 06:35:52,720 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-12-09 06:35:52,720 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-12-09 06:35:52,720 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-12-09 06:35:52,720 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-12-09 06:35:52,720 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-12-09 06:35:52,720 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-12-09 06:35:52,720 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-12-09 06:35:52,720 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-12-09 06:35:52,720 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-12-09 06:35:52,721 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-12-09 06:35:52,721 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-12-09 06:35:52,721 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-12-09 06:35:52,721 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-12-09 06:35:52,721 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-12-09 06:35:52,721 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-12-09 06:35:52,721 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse2 (= ~a20~0 1)) (.cse6 (= ~a17~0 1))) (let ((.cse0 (< 13 ~a8~0)) (.cse3 (let ((.cse8 (<= ~a8~0 13))) (or (and .cse2 .cse8) (and .cse6 .cse8)))) (.cse4 (= ~a16~0 6)) (.cse1 (= ~a21~0 1)) (.cse5 (<= ~a16~0 5)) (.cse7 (<= ~a7~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4) (and .cse0 .cse5) (<= ~a16~0 4) (and .cse3 .cse2 .cse6) (and .cse4 (<= 15 ~a8~0)) (and .cse1 .cse7 .cse2) (and .cse5 .cse7)))) [2020-12-09 06:35:52,721 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-12-09 06:35:52,721 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 540) no Hoare annotation was computed. [2020-12-09 06:35:52,722 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-12-09 06:35:52,722 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-12-09 06:35:52,722 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-12-09 06:35:52,722 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-12-09 06:35:52,722 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-12-09 06:35:52,722 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-12-09 06:35:52,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:35:52 BoogieIcfgContainer [2020-12-09 06:35:52,741 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:35:52,742 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:35:52,742 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:35:52,742 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:35:52,743 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:35:45" (3/4) ... [2020-12-09 06:35:52,745 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 06:35:52,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2020-12-09 06:35:52,766 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 06:35:52,767 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 06:35:52,769 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 06:35:52,870 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b7743a6b-4a5d-4da6-9119-644244d4ad59/bin/utaipan/witness.graphml [2020-12-09 06:35:52,870 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:35:52,871 INFO L168 Benchmark]: Toolchain (without parser) took 9178.35 ms. Allocated memory was 88.1 MB in the beginning and 281.0 MB in the end (delta: 192.9 MB). Free memory was 52.5 MB in the beginning and 141.9 MB in the end (delta: -89.4 MB). Peak memory consumption was 103.8 MB. Max. memory is 16.1 GB. [2020-12-09 06:35:52,871 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 88.1 MB. Free memory is still 70.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:35:52,871 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.19 ms. Allocated memory is still 88.1 MB. Free memory was 52.2 MB in the beginning and 48.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. [2020-12-09 06:35:52,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.91 ms. Allocated memory is still 88.1 MB. Free memory was 48.6 MB in the beginning and 43.0 MB in the end (delta: 5.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:35:52,872 INFO L168 Benchmark]: Boogie Preprocessor took 65.80 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 43.0 MB in the beginning and 79.4 MB in the end (delta: -36.5 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. [2020-12-09 06:35:52,872 INFO L168 Benchmark]: RCFGBuilder took 1350.06 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 79.4 MB in the beginning and 48.5 MB in the end (delta: 31.0 MB). Peak memory consumption was 54.8 MB. Max. memory is 16.1 GB. [2020-12-09 06:35:52,873 INFO L168 Benchmark]: TraceAbstraction took 7198.76 ms. Allocated memory was 132.1 MB in the beginning and 281.0 MB in the end (delta: 148.9 MB). Free memory was 47.4 MB in the beginning and 156.6 MB in the end (delta: -109.2 MB). Peak memory consumption was 115.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:35:52,873 INFO L168 Benchmark]: Witness Printer took 127.96 ms. Allocated memory is still 281.0 MB. Free memory was 156.6 MB in the beginning and 141.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 06:35:52,875 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 88.1 MB. Free memory is still 70.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 363.19 ms. Allocated memory is still 88.1 MB. Free memory was 52.2 MB in the beginning and 48.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.91 ms. Allocated memory is still 88.1 MB. Free memory was 48.6 MB in the beginning and 43.0 MB in the end (delta: 5.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.80 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 43.0 MB in the beginning and 79.4 MB in the end (delta: -36.5 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1350.06 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 79.4 MB in the beginning and 48.5 MB in the end (delta: 31.0 MB). Peak memory consumption was 54.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7198.76 ms. Allocated memory was 132.1 MB in the beginning and 281.0 MB in the end (delta: 148.9 MB). Free memory was 47.4 MB in the beginning and 156.6 MB in the end (delta: -109.2 MB). Peak memory consumption was 115.1 MB. Max. memory is 16.1 GB. * Witness Printer took 127.96 ms. Allocated memory is still 281.0 MB. Free memory was 156.6 MB in the beginning and 141.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 540]: 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: ((((((((13 < a8 && a21 == 1) && a20 == 1) || (((a20 == 1 && a8 <= 13) || (a17 == 1 && a8 <= 13)) && a16 == 6)) || (13 < a8 && a16 <= 5)) || a16 <= 4) || ((((a20 == 1 && a8 <= 13) || (a17 == 1 && a8 <= 13)) && a20 == 1) && a17 == 1)) || (a16 == 6 && 15 <= a8)) || ((a21 == 1 && a7 <= 0) && a20 == 1)) || (a16 <= 5 && a7 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((13 < a8 && a21 == 1) && a20 == 1) || (((a20 == 1 && a8 <= 13) || (a17 == 1 && a8 <= 13)) && a16 == 6)) || (13 < a8 && a16 <= 5)) || a16 <= 4) || ((((a20 == 1 && a8 <= 13) || (a17 == 1 && a8 <= 13)) && a20 == 1) && a17 == 1)) || (a16 == 6 && 15 <= a8)) || ((a21 == 1 && a7 <= 0) && a20 == 1)) || (a16 <= 5 && a7 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.6s, OverallIterations: 14, TraceHistogramMax: 7, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 674 SDtfs, 1013 SDslu, 66 SDs, 0 SdLazy, 3087 SolverSat, 724 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 872 GetRequests, 846 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1707occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 1420 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 71 NumberOfFragments, 173 HoareAnnotationTreeSize, 3 FomulaSimplifications, 3534 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 448 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 2160 NumberOfCodeBlocks, 2160 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 2559 ConstructedInterpolants, 0 QuantifiedInterpolants, 1333056 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1010 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 18 InterpolantComputations, 16 PerfectInterpolantSequences, 2435/2553 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...