./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label47.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_15a809b8-4760-480a-9e7d-8cd7306d53a0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_15a809b8-4760-480a-9e7d-8cd7306d53a0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_15a809b8-4760-480a-9e7d-8cd7306d53a0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_15a809b8-4760-480a-9e7d-8cd7306d53a0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label47.c -s /tmp/vcloud-vcloud-master/worker/run_dir_15a809b8-4760-480a-9e7d-8cd7306d53a0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_15a809b8-4760-480a-9e7d-8cd7306d53a0/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 69e53a5f887b798320aa40402d512baa70efc113 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 17:30:14,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 17:30:14,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 17:30:14,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 17:30:14,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 17:30:14,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 17:30:14,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 17:30:14,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 17:30:14,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 17:30:14,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 17:30:14,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 17:30:14,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 17:30:14,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 17:30:14,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 17:30:14,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 17:30:14,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 17:30:14,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 17:30:14,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 17:30:14,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 17:30:14,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 17:30:14,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 17:30:14,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 17:30:14,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 17:30:14,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 17:30:14,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 17:30:14,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 17:30:14,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 17:30:14,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 17:30:14,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 17:30:14,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 17:30:14,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 17:30:14,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 17:30:14,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 17:30:14,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 17:30:14,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 17:30:14,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 17:30:14,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 17:30:14,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 17:30:14,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 17:30:14,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 17:30:14,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 17:30:14,870 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_15a809b8-4760-480a-9e7d-8cd7306d53a0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 17:30:14,893 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 17:30:14,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 17:30:14,894 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 17:30:14,894 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 17:30:14,895 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 17:30:14,895 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 17:30:14,895 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 17:30:14,895 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 17:30:14,895 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 17:30:14,895 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 17:30:14,896 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 17:30:14,896 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 17:30:14,896 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 17:30:14,896 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 17:30:14,896 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 17:30:14,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 17:30:14,897 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 17:30:14,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 17:30:14,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 17:30:14,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 17:30:14,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 17:30:14,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 17:30:14,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 17:30:14,898 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 17:30:14,899 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 17:30:14,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 17:30:14,899 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 17:30:14,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 17:30:14,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 17:30:14,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 17:30:14,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 17:30:14,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 17:30:14,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 17:30:14,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 17:30:14,900 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 17:30:14,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 17:30:14,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 17:30:14,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 17:30:14,901 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 17:30:14,901 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_15a809b8-4760-480a-9e7d-8cd7306d53a0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_15a809b8-4760-480a-9e7d-8cd7306d53a0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69e53a5f887b798320aa40402d512baa70efc113 [2020-12-09 17:30:15,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 17:30:15,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 17:30:15,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 17:30:15,107 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 17:30:15,108 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 17:30:15,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_15a809b8-4760-480a-9e7d-8cd7306d53a0/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label47.c [2020-12-09 17:30:15,149 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15a809b8-4760-480a-9e7d-8cd7306d53a0/bin/utaipan/data/9bb19f429/aa0d35e9d7a24a9b9f47f9e3c878d25d/FLAGd476c14ab [2020-12-09 17:30:15,596 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 17:30:15,596 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_15a809b8-4760-480a-9e7d-8cd7306d53a0/sv-benchmarks/c/eca-rers2012/Problem02_label47.c [2020-12-09 17:30:15,607 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15a809b8-4760-480a-9e7d-8cd7306d53a0/bin/utaipan/data/9bb19f429/aa0d35e9d7a24a9b9f47f9e3c878d25d/FLAGd476c14ab [2020-12-09 17:30:15,620 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_15a809b8-4760-480a-9e7d-8cd7306d53a0/bin/utaipan/data/9bb19f429/aa0d35e9d7a24a9b9f47f9e3c878d25d [2020-12-09 17:30:15,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 17:30:15,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 17:30:15,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 17:30:15,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 17:30:15,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 17:30:15,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:30:15" (1/1) ... [2020-12-09 17:30:15,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@105fc3b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:15, skipping insertion in model container [2020-12-09 17:30:15,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:30:15" (1/1) ... [2020-12-09 17:30:15,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 17:30:15,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 17:30:15,897 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_15a809b8-4760-480a-9e7d-8cd7306d53a0/sv-benchmarks/c/eca-rers2012/Problem02_label47.c[17583,17596] [2020-12-09 17:30:15,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:30:15,926 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 17:30:15,980 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_15a809b8-4760-480a-9e7d-8cd7306d53a0/sv-benchmarks/c/eca-rers2012/Problem02_label47.c[17583,17596] [2020-12-09 17:30:15,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:30:16,000 INFO L208 MainTranslator]: Completed translation [2020-12-09 17:30:16,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:16 WrapperNode [2020-12-09 17:30:16,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 17:30:16,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 17:30:16,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 17:30:16,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 17:30:16,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:16" (1/1) ... [2020-12-09 17:30:16,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:16" (1/1) ... [2020-12-09 17:30:16,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 17:30:16,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 17:30:16,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 17:30:16,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 17:30:16,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:16" (1/1) ... [2020-12-09 17:30:16,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:16" (1/1) ... [2020-12-09 17:30:16,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:16" (1/1) ... [2020-12-09 17:30:16,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:16" (1/1) ... [2020-12-09 17:30:16,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:16" (1/1) ... [2020-12-09 17:30:16,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:16" (1/1) ... [2020-12-09 17:30:16,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:16" (1/1) ... [2020-12-09 17:30:16,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 17:30:16,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 17:30:16,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 17:30:16,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 17:30:16,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15a809b8-4760-480a-9e7d-8cd7306d53a0/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 17:30:16,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 17:30:16,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 17:30:16,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 17:30:16,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 17:30:17,455 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 17:30:17,455 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 17:30:17,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:30:17 BoogieIcfgContainer [2020-12-09 17:30:17,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 17:30:17,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 17:30:17,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 17:30:17,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 17:30:17,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:30:15" (1/3) ... [2020-12-09 17:30:17,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d9aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:30:17, skipping insertion in model container [2020-12-09 17:30:17,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:16" (2/3) ... [2020-12-09 17:30:17,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d9aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:30:17, skipping insertion in model container [2020-12-09 17:30:17,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:30:17" (3/3) ... [2020-12-09 17:30:17,465 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label47.c [2020-12-09 17:30:17,477 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 17:30:17,480 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 17:30:17,487 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 17:30:17,506 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 17:30:17,506 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 17:30:17,506 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 17:30:17,506 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 17:30:17,507 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 17:30:17,507 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 17:30:17,507 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 17:30:17,507 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 17:30:17,519 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 17:30:17,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 17:30:17,525 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:17,525 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:17,526 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:30:17,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:17,530 INFO L82 PathProgramCache]: Analyzing trace with hash 925955087, now seen corresponding path program 1 times [2020-12-09 17:30:17,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:17,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119313849] [2020-12-09 17:30:17,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:17,785 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 17:30:17,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119313849] [2020-12-09 17:30:17,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:30:17,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:30:17,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931907093] [2020-12-09 17:30:17,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:30:17,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:17,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:30:17,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:30:17,802 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 17:30:18,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:18,125 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 17:30:18,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:30:18,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 17:30:18,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:18,137 INFO L225 Difference]: With dead ends: 251 [2020-12-09 17:30:18,137 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 17:30:18,140 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 17:30:18,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 17:30:18,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 17:30:18,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 17:30:18,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2020-12-09 17:30:18,194 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2020-12-09 17:30:18,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:18,195 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2020-12-09 17:30:18,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:30:18,195 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2020-12-09 17:30:18,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-09 17:30:18,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:18,199 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:18,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 17:30:18,199 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:30:18,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:18,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1028675844, now seen corresponding path program 1 times [2020-12-09 17:30:18,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:18,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027656306] [2020-12-09 17:30:18,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:18,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:18,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027656306] [2020-12-09 17:30:18,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:30:18,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:30:18,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635366480] [2020-12-09 17:30:18,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:30:18,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:18,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:30:18,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:30:18,274 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2020-12-09 17:30:18,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:18,558 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2020-12-09 17:30:18,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:30:18,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-09 17:30:18,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:18,562 INFO L225 Difference]: With dead ends: 485 [2020-12-09 17:30:18,562 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 17:30:18,564 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 17:30:18,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 17:30:18,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 17:30:18,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 17:30:18,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2020-12-09 17:30:18,581 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2020-12-09 17:30:18,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:18,582 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2020-12-09 17:30:18,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:30:18,582 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2020-12-09 17:30:18,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-09 17:30:18,585 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:18,585 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:18,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 17:30:18,586 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:30:18,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:18,586 INFO L82 PathProgramCache]: Analyzing trace with hash 2137925725, now seen corresponding path program 1 times [2020-12-09 17:30:18,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:18,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653871399] [2020-12-09 17:30:18,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:18,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653871399] [2020-12-09 17:30:18,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766867550] [2020-12-09 17:30:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15a809b8-4760-480a-9e7d-8cd7306d53a0/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 17:30:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:18,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 17:30:18,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:30:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 17:30:18,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:30:18,889 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 17:30:18,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 17:30:18,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2020-12-09 17:30:18,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136605107] [2020-12-09 17:30:18,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:30:18,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:18,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:30:18,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:30:18,892 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand 4 states. [2020-12-09 17:30:19,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:19,335 INFO L93 Difference]: Finished difference Result 965 states and 1567 transitions. [2020-12-09 17:30:19,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:30:19,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-12-09 17:30:19,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:19,339 INFO L225 Difference]: With dead ends: 965 [2020-12-09 17:30:19,340 INFO L226 Difference]: Without dead ends: 643 [2020-12-09 17:30:19,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:30:19,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-12-09 17:30:19,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-12-09 17:30:19,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-12-09 17:30:19,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1023 transitions. [2020-12-09 17:30:19,365 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1023 transitions. Word has length 89 [2020-12-09 17:30:19,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:19,366 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 1023 transitions. [2020-12-09 17:30:19,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:30:19,366 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1023 transitions. [2020-12-09 17:30:19,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-09 17:30:19,368 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:19,368 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:19,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 17:30:19,569 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:30:19,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:19,571 INFO L82 PathProgramCache]: Analyzing trace with hash 2010261554, now seen corresponding path program 1 times [2020-12-09 17:30:19,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:19,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269705710] [2020-12-09 17:30:19,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:19,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:19,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269705710] [2020-12-09 17:30:19,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412763079] [2020-12-09 17:30:19,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15a809b8-4760-480a-9e7d-8cd7306d53a0/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 17:30:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:19,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 17:30:19,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:30:19,852 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 17:30:19,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:30:19,908 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 17:30:19,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 17:30:19,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-12-09 17:30:19,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647101539] [2020-12-09 17:30:19,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:30:19,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:19,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:30:19,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:30:19,910 INFO L87 Difference]: Start difference. First operand 643 states and 1023 transitions. Second operand 3 states. [2020-12-09 17:30:20,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:20,173 INFO L93 Difference]: Finished difference Result 1765 states and 2876 transitions. [2020-12-09 17:30:20,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:30:20,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-09 17:30:20,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:20,179 INFO L225 Difference]: With dead ends: 1765 [2020-12-09 17:30:20,179 INFO L226 Difference]: Without dead ends: 1123 [2020-12-09 17:30:20,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:30:20,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-12-09 17:30:20,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2020-12-09 17:30:20,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-12-09 17:30:20,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1758 transitions. [2020-12-09 17:30:20,206 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1758 transitions. Word has length 89 [2020-12-09 17:30:20,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:20,207 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1758 transitions. [2020-12-09 17:30:20,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:30:20,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1758 transitions. [2020-12-09 17:30:20,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-09 17:30:20,209 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:20,209 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:20,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:20,410 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:30:20,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:20,410 INFO L82 PathProgramCache]: Analyzing trace with hash 2106583972, now seen corresponding path program 1 times [2020-12-09 17:30:20,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:20,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475387596] [2020-12-09 17:30:20,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 17:30:20,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475387596] [2020-12-09 17:30:20,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120023034] [2020-12-09 17:30:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15a809b8-4760-480a-9e7d-8cd7306d53a0/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:20,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 17:30:20,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:30:20,574 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 17:30:20,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:30:20,625 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 17:30:20,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 17:30:20,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2020-12-09 17:30:20,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139701385] [2020-12-09 17:30:20,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:30:20,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:20,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:30:20,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:30:20,627 INFO L87 Difference]: Start difference. First operand 1123 states and 1758 transitions. Second operand 4 states. [2020-12-09 17:30:21,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:21,031 INFO L93 Difference]: Finished difference Result 2965 states and 4605 transitions. [2020-12-09 17:30:21,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:30:21,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-12-09 17:30:21,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:21,040 INFO L225 Difference]: With dead ends: 2965 [2020-12-09 17:30:21,040 INFO L226 Difference]: Without dead ends: 1843 [2020-12-09 17:30:21,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:30:21,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2020-12-09 17:30:21,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1843. [2020-12-09 17:30:21,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1843 states. [2020-12-09 17:30:21,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2613 transitions. [2020-12-09 17:30:21,075 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2613 transitions. Word has length 98 [2020-12-09 17:30:21,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:21,075 INFO L481 AbstractCegarLoop]: Abstraction has 1843 states and 2613 transitions. [2020-12-09 17:30:21,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:30:21,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2613 transitions. [2020-12-09 17:30:21,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-09 17:30:21,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:21,079 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:21,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:21,280 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:30:21,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:21,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1002070994, now seen corresponding path program 1 times [2020-12-09 17:30:21,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:21,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373058314] [2020-12-09 17:30:21,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:21,321 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 17:30:21,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373058314] [2020-12-09 17:30:21,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:30:21,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:30:21,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680416968] [2020-12-09 17:30:21,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:30:21,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:21,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:30:21,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:30:21,324 INFO L87 Difference]: Start difference. First operand 1843 states and 2613 transitions. Second operand 3 states. [2020-12-09 17:30:21,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:21,612 INFO L93 Difference]: Finished difference Result 4645 states and 6570 transitions. [2020-12-09 17:30:21,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:30:21,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-12-09 17:30:21,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:21,623 INFO L225 Difference]: With dead ends: 4645 [2020-12-09 17:30:21,623 INFO L226 Difference]: Without dead ends: 2803 [2020-12-09 17:30:21,625 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 17:30:21,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2020-12-09 17:30:21,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 2723. [2020-12-09 17:30:21,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2723 states. [2020-12-09 17:30:21,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 3588 transitions. [2020-12-09 17:30:21,666 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 3588 transitions. Word has length 99 [2020-12-09 17:30:21,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:21,666 INFO L481 AbstractCegarLoop]: Abstraction has 2723 states and 3588 transitions. [2020-12-09 17:30:21,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:30:21,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 3588 transitions. [2020-12-09 17:30:21,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-09 17:30:21,669 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:21,670 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:21,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 17:30:21,670 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:30:21,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:21,670 INFO L82 PathProgramCache]: Analyzing trace with hash -495523862, now seen corresponding path program 1 times [2020-12-09 17:30:21,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:21,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959200653] [2020-12-09 17:30:21,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:21,714 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-09 17:30:21,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959200653] [2020-12-09 17:30:21,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608541330] [2020-12-09 17:30:21,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15a809b8-4760-480a-9e7d-8cd7306d53a0/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:21,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 17:30:21,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:30:21,835 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-09 17:30:21,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:30:21,888 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-09 17:30:21,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 17:30:21,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-12-09 17:30:21,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818823679] [2020-12-09 17:30:21,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:30:21,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:21,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:30:21,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:30:21,891 INFO L87 Difference]: Start difference. First operand 2723 states and 3588 transitions. Second operand 3 states. [2020-12-09 17:30:22,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:22,055 INFO L93 Difference]: Finished difference Result 5045 states and 6625 transitions. [2020-12-09 17:30:22,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:30:22,056 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-12-09 17:30:22,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:22,067 INFO L225 Difference]: With dead ends: 5045 [2020-12-09 17:30:22,067 INFO L226 Difference]: Without dead ends: 2323 [2020-12-09 17:30:22,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:30:22,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2020-12-09 17:30:22,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 2323. [2020-12-09 17:30:22,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2323 states. [2020-12-09 17:30:22,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 2913 transitions. [2020-12-09 17:30:22,123 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 2913 transitions. Word has length 104 [2020-12-09 17:30:22,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:22,123 INFO L481 AbstractCegarLoop]: Abstraction has 2323 states and 2913 transitions. [2020-12-09 17:30:22,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:30:22,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 2913 transitions. [2020-12-09 17:30:22,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-09 17:30:22,128 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:22,128 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:22,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:22,330 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:30:22,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:22,331 INFO L82 PathProgramCache]: Analyzing trace with hash -195362815, now seen corresponding path program 1 times [2020-12-09 17:30:22,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:22,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059257150] [2020-12-09 17:30:22,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:22,537 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 49 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 17:30:22,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059257150] [2020-12-09 17:30:22,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500839658] [2020-12-09 17:30:22,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15a809b8-4760-480a-9e7d-8cd7306d53a0/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:22,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 17:30:22,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:30:22,650 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 17:30:22,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:30:22,741 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 17:30:22,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 17:30:22,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 17:30:22,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56068222] [2020-12-09 17:30:22,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:30:22,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:22,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:30:22,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:30:22,743 INFO L87 Difference]: Start difference. First operand 2323 states and 2913 transitions. Second operand 3 states. [2020-12-09 17:30:22,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:22,973 INFO L93 Difference]: Finished difference Result 4965 states and 6270 transitions. [2020-12-09 17:30:22,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:30:22,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-12-09 17:30:22,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:22,982 INFO L225 Difference]: With dead ends: 4965 [2020-12-09 17:30:22,982 INFO L226 Difference]: Without dead ends: 2723 [2020-12-09 17:30:22,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:30:22,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2020-12-09 17:30:23,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 1843. [2020-12-09 17:30:23,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1843 states. [2020-12-09 17:30:23,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2238 transitions. [2020-12-09 17:30:23,011 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2238 transitions. Word has length 122 [2020-12-09 17:30:23,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:23,012 INFO L481 AbstractCegarLoop]: Abstraction has 1843 states and 2238 transitions. [2020-12-09 17:30:23,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:30:23,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2238 transitions. [2020-12-09 17:30:23,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-09 17:30:23,014 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:23,014 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-09 17:30:23,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:23,215 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:30:23,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:23,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1641406508, now seen corresponding path program 1 times [2020-12-09 17:30:23,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:23,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785155856] [2020-12-09 17:30:23,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 17:30:23,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785155856] [2020-12-09 17:30:23,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:30:23,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 17:30:23,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966765088] [2020-12-09 17:30:23,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:30:23,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:23,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:30:23,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:30:23,298 INFO L87 Difference]: Start difference. First operand 1843 states and 2238 transitions. Second operand 3 states. [2020-12-09 17:30:23,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:23,512 INFO L93 Difference]: Finished difference Result 4085 states and 4950 transitions. [2020-12-09 17:30:23,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:30:23,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2020-12-09 17:30:23,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:23,520 INFO L225 Difference]: With dead ends: 4085 [2020-12-09 17:30:23,520 INFO L226 Difference]: Without dead ends: 2243 [2020-12-09 17:30:23,521 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 17:30:23,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2020-12-09 17:30:23,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 2083. [2020-12-09 17:30:23,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2083 states. [2020-12-09 17:30:23,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2402 transitions. [2020-12-09 17:30:23,545 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2402 transitions. Word has length 129 [2020-12-09 17:30:23,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:23,545 INFO L481 AbstractCegarLoop]: Abstraction has 2083 states and 2402 transitions. [2020-12-09 17:30:23,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:30:23,545 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2402 transitions. [2020-12-09 17:30:23,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-12-09 17:30:23,549 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:23,549 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:23,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 17:30:23,549 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:30:23,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:23,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1419759929, now seen corresponding path program 1 times [2020-12-09 17:30:23,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:23,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615566120] [2020-12-09 17:30:23,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:23,605 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-12-09 17:30:23,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615566120] [2020-12-09 17:30:23,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:30:23,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 17:30:23,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006545285] [2020-12-09 17:30:23,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:30:23,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:23,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:30:23,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:30:23,606 INFO L87 Difference]: Start difference. First operand 2083 states and 2402 transitions. Second operand 3 states. [2020-12-09 17:30:23,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:23,806 INFO L93 Difference]: Finished difference Result 3765 states and 4351 transitions. [2020-12-09 17:30:23,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:30:23,806 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2020-12-09 17:30:23,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:23,812 INFO L225 Difference]: With dead ends: 3765 [2020-12-09 17:30:23,812 INFO L226 Difference]: Without dead ends: 1763 [2020-12-09 17:30:23,814 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 17:30:23,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2020-12-09 17:30:23,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1763. [2020-12-09 17:30:23,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2020-12-09 17:30:23,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 1954 transitions. [2020-12-09 17:30:23,834 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 1954 transitions. Word has length 174 [2020-12-09 17:30:23,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:23,834 INFO L481 AbstractCegarLoop]: Abstraction has 1763 states and 1954 transitions. [2020-12-09 17:30:23,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:30:23,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 1954 transitions. [2020-12-09 17:30:23,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-12-09 17:30:23,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:23,840 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:23,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 17:30:23,840 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:30:23,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:23,841 INFO L82 PathProgramCache]: Analyzing trace with hash 642721157, now seen corresponding path program 1 times [2020-12-09 17:30:23,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:23,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76929640] [2020-12-09 17:30:23,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 278 proven. 96 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-12-09 17:30:24,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76929640] [2020-12-09 17:30:24,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659763584] [2020-12-09 17:30:24,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15a809b8-4760-480a-9e7d-8cd7306d53a0/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:24,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 17:30:24,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:30:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 331 proven. 80 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-09 17:30:24,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:30:24,634 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 331 proven. 80 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-09 17:30:24,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [808859630] [2020-12-09 17:30:24,655 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2020-12-09 17:30:24,656 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:30:24,661 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:30:24,666 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:30:24,667 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:30:31,648 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-12-09 17:30:32,100 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 150 [2020-12-09 17:30:32,499 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-12-09 17:30:35,874 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-12-09 17:30:36,002 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-12-09 17:30:36,166 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-12-09 17:30:36,291 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-12-09 17:30:36,452 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-12-09 17:30:36,577 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-12-09 17:30:36,764 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 154 [2020-12-09 17:30:36,890 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-12-09 17:30:37,029 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-12-09 17:30:37,156 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-12-09 17:30:40,959 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2020-12-09 17:30:41,039 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 7352 conjuctions. This might take some time... [2020-12-09 17:30:41,214 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 308 conjuctions. [2020-12-09 17:30:41,220 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2020-12-09 17:30:41,287 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 7352 conjuctions. This might take some time... [2020-12-09 17:30:41,458 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 308 conjuctions. [2020-12-09 17:30:41,551 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2020-12-09 17:30:41,614 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 7352 conjuctions. This might take some time... [2020-12-09 17:30:41,787 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 308 conjuctions. [2020-12-09 17:30:45,339 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:30:45,656 WARN L197 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 94 [2020-12-09 17:30:46,219 WARN L197 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 139 [2020-12-09 17:30:47,296 WARN L197 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 181 DAG size of output: 143 [2020-12-09 17:30:48,091 WARN L197 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 152 [2020-12-09 17:30:48,348 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2020-12-09 17:30:48,645 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 109 [2020-12-09 17:30:49,079 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-12-09 17:30:51,929 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2020-12-09 17:31:03,323 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:31:03,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 17:31:03,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2020-12-09 17:31:03,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442545528] [2020-12-09 17:31:03,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 17:31:03,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:31:03,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 17:31:03,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-12-09 17:31:03,325 INFO L87 Difference]: Start difference. First operand 1763 states and 1954 transitions. Second operand 8 states. [2020-12-09 17:31:04,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:31:04,039 INFO L93 Difference]: Finished difference Result 2842 states and 3139 transitions. [2020-12-09 17:31:04,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 17:31:04,039 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 282 [2020-12-09 17:31:04,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:31:04,040 INFO L225 Difference]: With dead ends: 2842 [2020-12-09 17:31:04,040 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 17:31:04,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 855 GetRequests, 596 SyntacticMatches, 241 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1892 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-12-09 17:31:04,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 17:31:04,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 17:31:04,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 17:31:04,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 17:31:04,042 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 282 [2020-12-09 17:31:04,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:31:04,043 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 17:31:04,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 17:31:04,043 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 17:31:04,043 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 17:31:04,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:31:04,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 17:31:04,563 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-12-09 17:31:04,803 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-12-09 17:31:04,805 INFO L262 CegarLoopResult]: For program point L499-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 17:31:04,805 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 17:31:04,806 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 17:31:04,806 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 17:31:04,806 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 17:31:04,806 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 17:31:04,806 INFO L262 CegarLoopResult]: For program point L502-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 17:31:04,806 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 17:31:04,806 INFO L262 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-12-09 17:31:04,806 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 17:31:04,806 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 17:31:04,806 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 17:31:04,806 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 17:31:04,806 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 17:31:04,806 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 17:31:04,806 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 17:31:04,806 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 17:31:04,806 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 17:31:04,806 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 17:31:04,806 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 17:31:04,807 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 17:31:04,807 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 17:31:04,807 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 17:31:04,807 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 17:31:04,807 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 17:31:04,807 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 17:31:04,807 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 17:31:04,807 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 17:31:04,807 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 17:31:04,807 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 17:31:04,807 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 17:31:04,807 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 17:31:04,807 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 17:31:04,807 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 17:31:04,807 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 17:31:04,807 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 17:31:04,807 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 17:31:04,808 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 17:31:04,808 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 17:31:04,808 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 503) no Hoare annotation was computed. [2020-12-09 17:31:04,808 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 17:31:04,808 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 17:31:04,808 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 17:31:04,808 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 17:31:04,808 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 17:31:04,808 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 17:31:04,808 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 17:31:04,808 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 17:31:04,808 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 17:31:04,808 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 17:31:04,808 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 17:31:04,808 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 17:31:04,808 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 17:31:04,808 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 17:31:04,808 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 17:31:04,809 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 17:31:04,809 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (<= 9 ~a28~0)) (.cse7 (< ~a28~0 11)) (.cse4 (= ~a11~0 1)) (.cse1 (= ~a25~0 1)) (.cse5 (<= ~a11~0 0)) (.cse10 (<= ~a19~0 0)) (.cse2 (<= ~a28~0 9)) (.cse3 (<= ~a17~0 8)) (.cse12 (= ~a25~0 ~a11~0)) (.cse6 (= ~a19~0 1)) (.cse11 (= ~a25~0 0)) (.cse8 (= ~a21~0 1)) (.cse9 (= ~a17~0 8)) (.cse13 (<= ~a28~0 7))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse0 .cse6 .cse7 .cse3) (and .cse5 .cse6 .cse8 .cse9 .cse1) (and .cse10 .cse2 .cse4 .cse3) (and .cse10 .cse11 .cse7 .cse4 .cse3) (and .cse0 .cse6 .cse7 .cse3 .cse4) (and .cse11 .cse2 .cse4 .cse3) (and .cse5 .cse10 .cse8 .cse9 .cse1 (= ~a28~0 10)) (and .cse5 .cse6 .cse11 .cse2 .cse3 (< 7 ~a28~0)) (and .cse12 .cse6 .cse1 .cse13 .cse3) (and .cse5 .cse10 .cse2 .cse3) (and .cse12 .cse6 .cse11 .cse8 .cse9 .cse13))) [2020-12-09 17:31:04,809 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 17:31:04,809 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 17:31:04,809 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 17:31:04,809 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 17:31:04,809 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 17:31:04,809 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 17:31:04,809 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 17:31:04,809 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 17:31:04,809 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 17:31:04,810 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 17:31:04,810 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 17:31:04,810 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= 9 ~a28~0)) (.cse7 (< ~a28~0 11)) (.cse4 (= ~a11~0 1)) (.cse1 (= ~a25~0 1)) (.cse5 (<= ~a11~0 0)) (.cse10 (<= ~a19~0 0)) (.cse2 (<= ~a28~0 9)) (.cse3 (<= ~a17~0 8)) (.cse12 (= ~a25~0 ~a11~0)) (.cse6 (= ~a19~0 1)) (.cse11 (= ~a25~0 0)) (.cse8 (= ~a21~0 1)) (.cse9 (= ~a17~0 8)) (.cse13 (<= ~a28~0 7))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse0 .cse6 .cse7 .cse3) (and .cse5 .cse6 .cse8 .cse9 .cse1) (and .cse10 .cse2 .cse4 .cse3) (and .cse10 .cse11 .cse7 .cse4 .cse3) (and .cse0 .cse6 .cse7 .cse3 .cse4) (and .cse11 .cse2 .cse4 .cse3) (and .cse5 .cse10 .cse8 .cse9 .cse1 (= ~a28~0 10)) (and .cse5 .cse6 .cse11 .cse2 .cse3 (< 7 ~a28~0)) (and .cse12 .cse6 .cse1 .cse13 .cse3) (and .cse5 .cse10 .cse2 .cse3) (and .cse12 .cse6 .cse11 .cse8 .cse9 .cse13))) [2020-12-09 17:31:04,810 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 17:31:04,810 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 17:31:04,810 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 17:31:04,810 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 17:31:04,810 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 17:31:04,810 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 17:31:04,810 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 17:31:04,810 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 17:31:04,810 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 17:31:04,810 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 17:31:04,810 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 17:31:04,810 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 17:31:04,810 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 17:31:04,811 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 17:31:04,811 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 17:31:04,811 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 17:31:04,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:31:04 BoogieIcfgContainer [2020-12-09 17:31:04,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 17:31:04,826 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 17:31:04,826 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 17:31:04,826 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 17:31:04,826 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:30:17" (3/4) ... [2020-12-09 17:31:04,828 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 17:31:04,843 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-12-09 17:31:04,845 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 17:31:04,846 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 17:31:04,847 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 17:31:04,919 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_15a809b8-4760-480a-9e7d-8cd7306d53a0/bin/utaipan/witness.graphml [2020-12-09 17:31:04,919 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 17:31:04,919 INFO L168 Benchmark]: Toolchain (without parser) took 49295.79 ms. Allocated memory was 94.4 MB in the beginning and 536.9 MB in the end (delta: 442.5 MB). Free memory was 53.1 MB in the beginning and 350.8 MB in the end (delta: -297.7 MB). Peak memory consumption was 146.9 MB. Max. memory is 16.1 GB. [2020-12-09 17:31:04,920 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 94.4 MB. Free memory is still 70.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:31:04,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.24 ms. Allocated memory is still 94.4 MB. Free memory was 52.8 MB in the beginning and 50.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-12-09 17:31:04,920 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.14 ms. Allocated memory is still 94.4 MB. Free memory was 50.9 MB in the beginning and 45.6 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 17:31:04,920 INFO L168 Benchmark]: Boogie Preprocessor took 56.83 ms. Allocated memory is still 94.4 MB. Free memory was 45.6 MB in the beginning and 68.8 MB in the end (delta: -23.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-12-09 17:31:04,921 INFO L168 Benchmark]: RCFGBuilder took 1346.21 ms. Allocated memory was 94.4 MB in the beginning and 146.8 MB in the end (delta: 52.4 MB). Free memory was 68.4 MB in the beginning and 94.7 MB in the end (delta: -26.3 MB). Peak memory consumption was 51.7 MB. Max. memory is 16.1 GB. [2020-12-09 17:31:04,921 INFO L168 Benchmark]: TraceAbstraction took 47367.17 ms. Allocated memory was 146.8 MB in the beginning and 536.9 MB in the end (delta: 390.1 MB). Free memory was 93.7 MB in the beginning and 366.5 MB in the end (delta: -272.8 MB). Peak memory consumption was 308.1 MB. Max. memory is 16.1 GB. [2020-12-09 17:31:04,921 INFO L168 Benchmark]: Witness Printer took 92.93 ms. Allocated memory is still 536.9 MB. Free memory was 366.5 MB in the beginning and 350.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 17:31:04,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 94.4 MB. Free memory is still 70.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 375.24 ms. Allocated memory is still 94.4 MB. Free memory was 52.8 MB in the beginning and 50.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.14 ms. Allocated memory is still 94.4 MB. Free memory was 50.9 MB in the beginning and 45.6 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.83 ms. Allocated memory is still 94.4 MB. Free memory was 45.6 MB in the beginning and 68.8 MB in the end (delta: -23.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1346.21 ms. Allocated memory was 94.4 MB in the beginning and 146.8 MB in the end (delta: 52.4 MB). Free memory was 68.4 MB in the beginning and 94.7 MB in the end (delta: -26.3 MB). Peak memory consumption was 51.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 47367.17 ms. Allocated memory was 146.8 MB in the beginning and 536.9 MB in the end (delta: 390.1 MB). Free memory was 93.7 MB in the beginning and 366.5 MB in the end (delta: -272.8 MB). Peak memory consumption was 308.1 MB. Max. memory is 16.1 GB. * Witness Printer took 92.93 ms. Allocated memory is still 536.9 MB. Free memory was 366.5 MB in the beginning and 350.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 503]: 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: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((((((((((9 <= a28 && a25 == 1) && a28 <= 9) && a17 <= 8) && a11 == 1) || ((((a11 <= 0 && 9 <= a28) && a19 == 1) && a28 < 11) && a17 <= 8)) || ((((a11 <= 0 && a19 == 1) && a21 == 1) && a17 == 8) && a25 == 1)) || (((a19 <= 0 && a28 <= 9) && a11 == 1) && a17 <= 8)) || ((((a19 <= 0 && a25 == 0) && a28 < 11) && a11 == 1) && a17 <= 8)) || ((((9 <= a28 && a19 == 1) && a28 < 11) && a17 <= 8) && a11 == 1)) || (((a25 == 0 && a28 <= 9) && a11 == 1) && a17 <= 8)) || (((((a11 <= 0 && a19 <= 0) && a21 == 1) && a17 == 8) && a25 == 1) && a28 == 10)) || (((((a11 <= 0 && a19 == 1) && a25 == 0) && a28 <= 9) && a17 <= 8) && 7 < a28)) || ((((a25 == a11 && a19 == 1) && a25 == 1) && a28 <= 7) && a17 <= 8)) || (((a11 <= 0 && a19 <= 0) && a28 <= 9) && a17 <= 8)) || (((((a25 == a11 && a19 == 1) && a25 == 0) && a21 == 1) && a17 == 8) && a28 <= 7) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((((((((9 <= a28 && a25 == 1) && a28 <= 9) && a17 <= 8) && a11 == 1) || ((((a11 <= 0 && 9 <= a28) && a19 == 1) && a28 < 11) && a17 <= 8)) || ((((a11 <= 0 && a19 == 1) && a21 == 1) && a17 == 8) && a25 == 1)) || (((a19 <= 0 && a28 <= 9) && a11 == 1) && a17 <= 8)) || ((((a19 <= 0 && a25 == 0) && a28 < 11) && a11 == 1) && a17 <= 8)) || ((((9 <= a28 && a19 == 1) && a28 < 11) && a17 <= 8) && a11 == 1)) || (((a25 == 0 && a28 <= 9) && a11 == 1) && a17 <= 8)) || (((((a11 <= 0 && a19 <= 0) && a21 == 1) && a17 == 8) && a25 == 1) && a28 == 10)) || (((((a11 <= 0 && a19 == 1) && a25 == 0) && a28 <= 9) && a17 <= 8) && 7 < a28)) || ((((a25 == a11 && a19 == 1) && a25 == 1) && a28 <= 7) && a17 <= 8)) || (((a11 <= 0 && a19 <= 0) && a28 <= 9) && a17 <= 8)) || (((((a25 == a11 && a19 == 1) && a25 == 0) && a21 == 1) && a17 == 8) && a28 <= 7) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 46.7s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 722 SDtfs, 1032 SDslu, 105 SDs, 0 SdLazy, 3708 SolverSat, 745 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1877 GetRequests, 1592 SyntacticMatches, 244 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1892 ImplicationChecksByTransitivity, 18.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2723occurred in iteration=6, 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, 11 MinimizatonAttempts, 1120 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 79 NumberOfFragments, 387 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1904 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 1010 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 2134 NumberOfCodeBlocks, 2134 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2895 ConstructedInterpolants, 0 QuantifiedInterpolants, 1223411 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1893 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 23 InterpolantComputations, 15 PerfectInterpolantSequences, 1823/2104 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...