./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label26.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_2707da27-2948-4cca-a4e9-993608c41b7e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2707da27-2948-4cca-a4e9-993608c41b7e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2707da27-2948-4cca-a4e9-993608c41b7e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2707da27-2948-4cca-a4e9-993608c41b7e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label26.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2707da27-2948-4cca-a4e9-993608c41b7e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2707da27-2948-4cca-a4e9-993608c41b7e/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 51d92a84bc78e88f15f7a4ac533fe50d944a2d4f .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 10:13:37,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 10:13:37,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 10:13:37,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 10:13:37,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 10:13:37,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 10:13:37,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 10:13:37,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 10:13:37,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 10:13:37,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 10:13:37,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 10:13:37,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 10:13:37,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 10:13:37,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 10:13:37,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 10:13:37,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 10:13:37,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 10:13:37,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 10:13:37,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 10:13:37,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 10:13:37,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 10:13:37,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 10:13:37,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 10:13:37,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 10:13:37,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 10:13:37,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 10:13:37,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 10:13:37,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 10:13:37,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 10:13:37,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 10:13:37,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 10:13:37,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 10:13:37,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 10:13:37,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 10:13:37,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 10:13:37,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 10:13:37,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 10:13:37,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 10:13:37,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 10:13:37,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 10:13:37,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 10:13:37,777 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2707da27-2948-4cca-a4e9-993608c41b7e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 10:13:37,799 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 10:13:37,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 10:13:37,799 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 10:13:37,800 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 10:13:37,800 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 10:13:37,800 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 10:13:37,800 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 10:13:37,800 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 10:13:37,800 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 10:13:37,800 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 10:13:37,800 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 10:13:37,801 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 10:13:37,801 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 10:13:37,801 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 10:13:37,801 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 10:13:37,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 10:13:37,802 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 10:13:37,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 10:13:37,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 10:13:37,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 10:13:37,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 10:13:37,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 10:13:37,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 10:13:37,802 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 10:13:37,803 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 10:13:37,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 10:13:37,803 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 10:13:37,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 10:13:37,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 10:13:37,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 10:13:37,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:13:37,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 10:13:37,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 10:13:37,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 10:13:37,804 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 10:13:37,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 10:13:37,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 10:13:37,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 10:13:37,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 10:13:37,804 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_2707da27-2948-4cca-a4e9-993608c41b7e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2707da27-2948-4cca-a4e9-993608c41b7e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51d92a84bc78e88f15f7a4ac533fe50d944a2d4f [2020-12-09 10:13:37,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 10:13:37,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 10:13:37,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 10:13:37,998 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 10:13:37,999 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 10:13:38,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2707da27-2948-4cca-a4e9-993608c41b7e/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label26.c [2020-12-09 10:13:38,040 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2707da27-2948-4cca-a4e9-993608c41b7e/bin/utaipan/data/99dff3170/be9ffa43be56414c9a6dda6a1f6938a3/FLAGc4d3cd344 [2020-12-09 10:13:38,450 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 10:13:38,450 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2707da27-2948-4cca-a4e9-993608c41b7e/sv-benchmarks/c/eca-rers2012/Problem01_label26.c [2020-12-09 10:13:38,459 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2707da27-2948-4cca-a4e9-993608c41b7e/bin/utaipan/data/99dff3170/be9ffa43be56414c9a6dda6a1f6938a3/FLAGc4d3cd344 [2020-12-09 10:13:38,472 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2707da27-2948-4cca-a4e9-993608c41b7e/bin/utaipan/data/99dff3170/be9ffa43be56414c9a6dda6a1f6938a3 [2020-12-09 10:13:38,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 10:13:38,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 10:13:38,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 10:13:38,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 10:13:38,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 10:13:38,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:13:38" (1/1) ... [2020-12-09 10:13:38,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39d649df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:13:38, skipping insertion in model container [2020-12-09 10:13:38,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:13:38" (1/1) ... [2020-12-09 10:13:38,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 10:13:38,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 10:13:38,772 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_2707da27-2948-4cca-a4e9-993608c41b7e/sv-benchmarks/c/eca-rers2012/Problem01_label26.c[18357,18370] [2020-12-09 10:13:38,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:13:38,802 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 10:13:38,863 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_2707da27-2948-4cca-a4e9-993608c41b7e/sv-benchmarks/c/eca-rers2012/Problem01_label26.c[18357,18370] [2020-12-09 10:13:38,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:13:38,888 INFO L208 MainTranslator]: Completed translation [2020-12-09 10:13:38,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:13:38 WrapperNode [2020-12-09 10:13:38,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 10:13:38,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 10:13:38,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 10:13:38,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 10:13:38,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:13:38" (1/1) ... [2020-12-09 10:13:38,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:13:38" (1/1) ... [2020-12-09 10:13:38,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 10:13:38,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 10:13:38,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 10:13:38,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 10:13:38,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:13:38" (1/1) ... [2020-12-09 10:13:38,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:13:38" (1/1) ... [2020-12-09 10:13:38,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:13:38" (1/1) ... [2020-12-09 10:13:38,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:13:38" (1/1) ... [2020-12-09 10:13:38,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:13:38" (1/1) ... [2020-12-09 10:13:38,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:13:38" (1/1) ... [2020-12-09 10:13:39,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:13:38" (1/1) ... [2020-12-09 10:13:39,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 10:13:39,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 10:13:39,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 10:13:39,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 10:13:39,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:13:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2707da27-2948-4cca-a4e9-993608c41b7e/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 10:13:39,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 10:13:39,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 10:13:39,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 10:13:39,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 10:13:40,262 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 10:13:40,263 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 10:13:40,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:13:40 BoogieIcfgContainer [2020-12-09 10:13:40,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 10:13:40,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 10:13:40,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 10:13:40,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 10:13:40,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:13:38" (1/3) ... [2020-12-09 10:13:40,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae549a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:13:40, skipping insertion in model container [2020-12-09 10:13:40,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:13:38" (2/3) ... [2020-12-09 10:13:40,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae549a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:13:40, skipping insertion in model container [2020-12-09 10:13:40,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:13:40" (3/3) ... [2020-12-09 10:13:40,273 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label26.c [2020-12-09 10:13:40,287 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 10:13:40,290 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 10:13:40,301 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 10:13:40,320 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 10:13:40,320 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 10:13:40,320 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 10:13:40,320 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 10:13:40,321 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 10:13:40,321 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 10:13:40,321 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 10:13:40,321 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 10:13:40,331 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-12-09 10:13:40,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-09 10:13:40,337 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:13:40,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:13:40,338 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:13:40,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:13:40,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1806911320, now seen corresponding path program 1 times [2020-12-09 10:13:40,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:13:40,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989958066] [2020-12-09 10:13:40,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:13:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:13:40,595 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 10:13:40,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989958066] [2020-12-09 10:13:40,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:13:40,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:13:40,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983020012] [2020-12-09 10:13:40,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:13:40,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:13:40,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:13:40,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:13:40,611 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-12-09 10:13:40,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:13:40,910 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-12-09 10:13:40,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:13:40,911 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-09 10:13:40,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:13:40,920 INFO L225 Difference]: With dead ends: 224 [2020-12-09 10:13:40,920 INFO L226 Difference]: Without dead ends: 145 [2020-12-09 10:13:40,923 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 10:13:40,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-09 10:13:40,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-12-09 10:13:40,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-09 10:13:40,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 265 transitions. [2020-12-09 10:13:40,964 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 265 transitions. Word has length 71 [2020-12-09 10:13:40,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:13:40,964 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 265 transitions. [2020-12-09 10:13:40,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:13:40,965 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 265 transitions. [2020-12-09 10:13:40,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-09 10:13:40,967 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:13:40,967 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 10:13:40,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 10:13:40,968 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:13:40,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:13:40,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1034855813, now seen corresponding path program 1 times [2020-12-09 10:13:40,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:13:40,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427571708] [2020-12-09 10:13:40,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:13:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:13:41,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:13:41,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427571708] [2020-12-09 10:13:41,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:13:41,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:13:41,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142028366] [2020-12-09 10:13:41,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:13:41,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:13:41,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:13:41,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:13:41,012 INFO L87 Difference]: Start difference. First operand 145 states and 265 transitions. Second operand 3 states. [2020-12-09 10:13:41,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:13:41,220 INFO L93 Difference]: Finished difference Result 431 states and 792 transitions. [2020-12-09 10:13:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:13:41,220 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-09 10:13:41,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:13:41,223 INFO L225 Difference]: With dead ends: 431 [2020-12-09 10:13:41,223 INFO L226 Difference]: Without dead ends: 287 [2020-12-09 10:13:41,224 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 10:13:41,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-09 10:13:41,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-12-09 10:13:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-09 10:13:41,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 486 transitions. [2020-12-09 10:13:41,239 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 486 transitions. Word has length 77 [2020-12-09 10:13:41,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:13:41,239 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 486 transitions. [2020-12-09 10:13:41,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:13:41,239 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 486 transitions. [2020-12-09 10:13:41,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-09 10:13:41,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:13:41,242 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 10:13:41,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 10:13:41,242 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:13:41,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:13:41,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1703776455, now seen corresponding path program 1 times [2020-12-09 10:13:41,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:13:41,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089436727] [2020-12-09 10:13:41,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:13:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:13:41,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:13:41,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089436727] [2020-12-09 10:13:41,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:13:41,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:13:41,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932640609] [2020-12-09 10:13:41,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:13:41,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:13:41,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:13:41,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:13:41,418 INFO L87 Difference]: Start difference. First operand 287 states and 486 transitions. Second operand 4 states. [2020-12-09 10:13:41,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:13:41,730 INFO L93 Difference]: Finished difference Result 784 states and 1303 transitions. [2020-12-09 10:13:41,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:13:41,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-09 10:13:41,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:13:41,732 INFO L225 Difference]: With dead ends: 784 [2020-12-09 10:13:41,732 INFO L226 Difference]: Without dead ends: 429 [2020-12-09 10:13:41,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:13:41,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-12-09 10:13:41,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2020-12-09 10:13:41,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-12-09 10:13:41,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 512 transitions. [2020-12-09 10:13:41,748 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 512 transitions. Word has length 78 [2020-12-09 10:13:41,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:13:41,749 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 512 transitions. [2020-12-09 10:13:41,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:13:41,749 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 512 transitions. [2020-12-09 10:13:41,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-09 10:13:41,751 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:13:41,751 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:13:41,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 10:13:41,752 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:13:41,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:13:41,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1572562034, now seen corresponding path program 1 times [2020-12-09 10:13:41,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:13:41,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462642212] [2020-12-09 10:13:41,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:13:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:13:41,796 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 10:13:41,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462642212] [2020-12-09 10:13:41,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:13:41,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:13:41,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067954106] [2020-12-09 10:13:41,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:13:41,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:13:41,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:13:41,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:13:41,798 INFO L87 Difference]: Start difference. First operand 358 states and 512 transitions. Second operand 3 states. [2020-12-09 10:13:41,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:13:41,973 INFO L93 Difference]: Finished difference Result 857 states and 1253 transitions. [2020-12-09 10:13:41,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:13:41,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-12-09 10:13:41,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:13:41,975 INFO L225 Difference]: With dead ends: 857 [2020-12-09 10:13:41,975 INFO L226 Difference]: Without dead ends: 500 [2020-12-09 10:13:41,976 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 10:13:41,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-12-09 10:13:41,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 429. [2020-12-09 10:13:41,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-12-09 10:13:41,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 595 transitions. [2020-12-09 10:13:41,992 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 595 transitions. Word has length 88 [2020-12-09 10:13:41,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:13:41,992 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 595 transitions. [2020-12-09 10:13:41,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:13:41,992 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 595 transitions. [2020-12-09 10:13:41,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-09 10:13:41,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:13:41,995 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:13:41,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 10:13:41,995 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:13:41,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:13:41,996 INFO L82 PathProgramCache]: Analyzing trace with hash -169372714, now seen corresponding path program 1 times [2020-12-09 10:13:41,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:13:41,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116940991] [2020-12-09 10:13:41,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:13:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:13:42,033 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-09 10:13:42,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116940991] [2020-12-09 10:13:42,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:13:42,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:13:42,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430469810] [2020-12-09 10:13:42,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:13:42,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:13:42,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:13:42,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:13:42,035 INFO L87 Difference]: Start difference. First operand 429 states and 595 transitions. Second operand 3 states. [2020-12-09 10:13:42,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:13:42,226 INFO L93 Difference]: Finished difference Result 1141 states and 1560 transitions. [2020-12-09 10:13:42,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:13:42,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-09 10:13:42,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:13:42,229 INFO L225 Difference]: With dead ends: 1141 [2020-12-09 10:13:42,230 INFO L226 Difference]: Without dead ends: 713 [2020-12-09 10:13:42,230 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 10:13:42,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-12-09 10:13:42,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 571. [2020-12-09 10:13:42,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-09 10:13:42,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 787 transitions. [2020-12-09 10:13:42,250 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 787 transitions. Word has length 97 [2020-12-09 10:13:42,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:13:42,250 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 787 transitions. [2020-12-09 10:13:42,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:13:42,251 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 787 transitions. [2020-12-09 10:13:42,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 10:13:42,253 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:13:42,253 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2020-12-09 10:13:42,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 10:13:42,253 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:13:42,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:13:42,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1376082555, now seen corresponding path program 1 times [2020-12-09 10:13:42,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:13:42,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678712478] [2020-12-09 10:13:42,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:13:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:13:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-09 10:13:42,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678712478] [2020-12-09 10:13:42,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:13:42,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:13:42,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571694625] [2020-12-09 10:13:42,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:13:42,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:13:42,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:13:42,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:13:42,310 INFO L87 Difference]: Start difference. First operand 571 states and 787 transitions. Second operand 4 states. [2020-12-09 10:13:42,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:13:42,602 INFO L93 Difference]: Finished difference Result 1496 states and 2052 transitions. [2020-12-09 10:13:42,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:13:42,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-12-09 10:13:42,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:13:42,608 INFO L225 Difference]: With dead ends: 1496 [2020-12-09 10:13:42,608 INFO L226 Difference]: Without dead ends: 926 [2020-12-09 10:13:42,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:13:42,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-12-09 10:13:42,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2020-12-09 10:13:42,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-12-09 10:13:42,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1053 transitions. [2020-12-09 10:13:42,634 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1053 transitions. Word has length 103 [2020-12-09 10:13:42,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:13:42,635 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1053 transitions. [2020-12-09 10:13:42,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:13:42,635 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1053 transitions. [2020-12-09 10:13:42,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-09 10:13:42,638 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:13:42,638 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-09 10:13:42,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 10:13:42,638 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:13:42,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:13:42,639 INFO L82 PathProgramCache]: Analyzing trace with hash 918721188, now seen corresponding path program 1 times [2020-12-09 10:13:42,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:13:42,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448539632] [2020-12-09 10:13:42,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:13:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:13:42,700 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-09 10:13:42,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448539632] [2020-12-09 10:13:42,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:13:42,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:13:42,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901880964] [2020-12-09 10:13:42,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:13:42,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:13:42,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:13:42,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:13:42,702 INFO L87 Difference]: Start difference. First operand 784 states and 1053 transitions. Second operand 3 states. [2020-12-09 10:13:42,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:13:42,890 INFO L93 Difference]: Finished difference Result 1709 states and 2311 transitions. [2020-12-09 10:13:42,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:13:42,890 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2020-12-09 10:13:42,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:13:42,895 INFO L225 Difference]: With dead ends: 1709 [2020-12-09 10:13:42,895 INFO L226 Difference]: Without dead ends: 926 [2020-12-09 10:13:42,896 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 10:13:42,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-12-09 10:13:42,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2020-12-09 10:13:42,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-12-09 10:13:42,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1211 transitions. [2020-12-09 10:13:42,913 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1211 transitions. Word has length 121 [2020-12-09 10:13:42,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:13:42,913 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1211 transitions. [2020-12-09 10:13:42,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:13:42,914 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1211 transitions. [2020-12-09 10:13:42,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-09 10:13:42,915 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:13:42,915 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-09 10:13:42,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 10:13:42,916 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:13:42,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:13:42,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1163048265, now seen corresponding path program 1 times [2020-12-09 10:13:42,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:13:42,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379462074] [2020-12-09 10:13:42,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:13:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:13:42,974 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:13:42,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379462074] [2020-12-09 10:13:42,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:13:42,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:13:42,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971542547] [2020-12-09 10:13:42,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:13:42,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:13:42,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:13:42,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:13:42,976 INFO L87 Difference]: Start difference. First operand 926 states and 1211 transitions. Second operand 3 states. [2020-12-09 10:13:43,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:13:43,186 INFO L93 Difference]: Finished difference Result 2064 states and 2727 transitions. [2020-12-09 10:13:43,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:13:43,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2020-12-09 10:13:43,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:13:43,193 INFO L225 Difference]: With dead ends: 2064 [2020-12-09 10:13:43,193 INFO L226 Difference]: Without dead ends: 1139 [2020-12-09 10:13:43,195 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 10:13:43,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-12-09 10:13:43,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1068. [2020-12-09 10:13:43,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-12-09 10:13:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1383 transitions. [2020-12-09 10:13:43,222 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1383 transitions. Word has length 130 [2020-12-09 10:13:43,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:13:43,223 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1383 transitions. [2020-12-09 10:13:43,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:13:43,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1383 transitions. [2020-12-09 10:13:43,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-09 10:13:43,226 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:13:43,226 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:13:43,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 10:13:43,227 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:13:43,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:13:43,227 INFO L82 PathProgramCache]: Analyzing trace with hash -2126445930, now seen corresponding path program 1 times [2020-12-09 10:13:43,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:13:43,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199023638] [2020-12-09 10:13:43,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:13:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:13:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-09 10:13:43,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199023638] [2020-12-09 10:13:43,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:13:43,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:13:43,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432155271] [2020-12-09 10:13:43,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:13:43,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:13:43,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:13:43,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:13:43,318 INFO L87 Difference]: Start difference. First operand 1068 states and 1383 transitions. Second operand 3 states. [2020-12-09 10:13:43,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:13:43,500 INFO L93 Difference]: Finished difference Result 2277 states and 2917 transitions. [2020-12-09 10:13:43,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:13:43,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-12-09 10:13:43,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:13:43,507 INFO L225 Difference]: With dead ends: 2277 [2020-12-09 10:13:43,507 INFO L226 Difference]: Without dead ends: 1210 [2020-12-09 10:13:43,509 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 10:13:43,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-12-09 10:13:43,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2020-12-09 10:13:43,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-12-09 10:13:43,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1371 transitions. [2020-12-09 10:13:43,536 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1371 transitions. Word has length 153 [2020-12-09 10:13:43,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:13:43,537 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1371 transitions. [2020-12-09 10:13:43,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:13:43,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1371 transitions. [2020-12-09 10:13:43,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-12-09 10:13:43,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:13:43,542 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:13:43,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 10:13:43,542 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:13:43,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:13:43,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1638897923, now seen corresponding path program 1 times [2020-12-09 10:13:43,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:13:43,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802829608] [2020-12-09 10:13:43,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:13:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:13:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 185 proven. 88 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-09 10:13:43,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802829608] [2020-12-09 10:13:43,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814569952] [2020-12-09 10:13:43,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2707da27-2948-4cca-a4e9-993608c41b7e/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 10:13:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:13:43,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 10:13:43,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:13:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-12-09 10:13:44,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:13:44,177 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-12-09 10:13:44,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 10:13:44,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-12-09 10:13:44,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759956146] [2020-12-09 10:13:44,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:13:44,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:13:44,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:13:44,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:13:44,179 INFO L87 Difference]: Start difference. First operand 1068 states and 1371 transitions. Second operand 3 states. [2020-12-09 10:13:44,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:13:44,338 INFO L93 Difference]: Finished difference Result 2135 states and 2741 transitions. [2020-12-09 10:13:44,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:13:44,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2020-12-09 10:13:44,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:13:44,342 INFO L225 Difference]: With dead ends: 2135 [2020-12-09 10:13:44,342 INFO L226 Difference]: Without dead ends: 1068 [2020-12-09 10:13:44,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 434 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:13:44,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-12-09 10:13:44,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1068. [2020-12-09 10:13:44,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-12-09 10:13:44,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1305 transitions. [2020-12-09 10:13:44,359 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1305 transitions. Word has length 218 [2020-12-09 10:13:44,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:13:44,360 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1305 transitions. [2020-12-09 10:13:44,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:13:44,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1305 transitions. [2020-12-09 10:13:44,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-12-09 10:13:44,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:13:44,363 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:13:44,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 10:13:44,565 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:13:44,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:13:44,566 INFO L82 PathProgramCache]: Analyzing trace with hash 228343667, now seen corresponding path program 1 times [2020-12-09 10:13:44,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:13:44,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650140743] [2020-12-09 10:13:44,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:13:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:13:44,798 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-12-09 10:13:44,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650140743] [2020-12-09 10:13:44,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:13:44,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:13:44,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266612011] [2020-12-09 10:13:44,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:13:44,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:13:44,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:13:44,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:13:44,800 INFO L87 Difference]: Start difference. First operand 1068 states and 1305 transitions. Second operand 3 states. [2020-12-09 10:13:44,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:13:44,998 INFO L93 Difference]: Finished difference Result 2346 states and 2849 transitions. [2020-12-09 10:13:44,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:13:44,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2020-12-09 10:13:44,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:13:44,999 INFO L225 Difference]: With dead ends: 2346 [2020-12-09 10:13:45,000 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 10:13:45,001 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 10:13:45,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 10:13:45,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 10:13:45,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 10:13:45,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 10:13:45,002 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 222 [2020-12-09 10:13:45,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:13:45,002 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 10:13:45,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:13:45,002 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 10:13:45,002 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 10:13:45,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 10:13:45,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 10:13:45,202 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-12-09 10:13:45,202 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-12-09 10:13:45,202 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-12-09 10:13:45,202 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-12-09 10:13:45,202 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-12-09 10:13:45,203 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-12-09 10:13:45,203 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-12-09 10:13:45,203 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-12-09 10:13:45,203 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-12-09 10:13:45,203 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-12-09 10:13:45,203 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-12-09 10:13:45,203 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-12-09 10:13:45,203 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-12-09 10:13:45,203 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-12-09 10:13:45,203 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-12-09 10:13:45,203 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-12-09 10:13:45,203 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-12-09 10:13:45,204 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-12-09 10:13:45,204 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-12-09 10:13:45,204 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-12-09 10:13:45,204 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-12-09 10:13:45,204 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-12-09 10:13:45,204 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-12-09 10:13:45,204 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-12-09 10:13:45,204 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-12-09 10:13:45,204 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-12-09 10:13:45,204 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-12-09 10:13:45,205 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-12-09 10:13:45,205 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-12-09 10:13:45,205 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-12-09 10:13:45,205 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-12-09 10:13:45,205 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-12-09 10:13:45,205 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-12-09 10:13:45,205 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-12-09 10:13:45,205 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-12-09 10:13:45,205 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-12-09 10:13:45,205 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 10:13:45,205 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-12-09 10:13:45,205 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-12-09 10:13:45,206 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-12-09 10:13:45,206 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse2 (not (= ~a7~0 1))) (.cse0 (= ~a21~0 1)) (.cse3 (<= ~a20~0 0)) (.cse1 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse2 .cse3) (and .cse0 (or (and .cse1 (= ~a17~0 1)) (and .cse1 (<= 5 ~a16~0)))) (and (<= ~a16~0 5) .cse3) (and .cse1 (<= ~a8~0 13)))) [2020-12-09 10:13:45,206 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-12-09 10:13:45,206 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-12-09 10:13:45,206 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-12-09 10:13:45,206 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-12-09 10:13:45,206 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-12-09 10:13:45,207 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-12-09 10:13:45,207 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-12-09 10:13:45,207 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 10:13:45,207 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-12-09 10:13:45,207 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-12-09 10:13:45,207 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-12-09 10:13:45,207 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-12-09 10:13:45,207 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-12-09 10:13:45,207 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-12-09 10:13:45,207 INFO L262 CegarLoopResult]: For program point L491-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 10:13:45,207 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-12-09 10:13:45,208 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-12-09 10:13:45,208 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-12-09 10:13:45,208 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-12-09 10:13:45,208 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-12-09 10:13:45,208 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-12-09 10:13:45,208 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-12-09 10:13:45,208 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-12-09 10:13:45,208 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-12-09 10:13:45,208 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse2 (not (= ~a7~0 1))) (.cse0 (= ~a21~0 1)) (.cse3 (<= ~a20~0 0)) (.cse1 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse2 .cse3) (and .cse0 (or (and .cse1 (= ~a17~0 1)) (and .cse1 (<= 5 ~a16~0)))) (and (<= ~a16~0 5) .cse3) (and .cse1 (<= ~a8~0 13)))) [2020-12-09 10:13:45,208 INFO L262 CegarLoopResult]: For program point L494-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 10:13:45,209 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-12-09 10:13:45,209 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 495) no Hoare annotation was computed. [2020-12-09 10:13:45,209 INFO L262 CegarLoopResult]: For program point L495(line 495) no Hoare annotation was computed. [2020-12-09 10:13:45,209 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-12-09 10:13:45,209 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-12-09 10:13:45,209 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-12-09 10:13:45,209 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-12-09 10:13:45,209 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-12-09 10:13:45,209 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-12-09 10:13:45,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:13:45 BoogieIcfgContainer [2020-12-09 10:13:45,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 10:13:45,223 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 10:13:45,223 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 10:13:45,223 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 10:13:45,223 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:13:40" (3/4) ... [2020-12-09 10:13:45,225 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 10:13:45,243 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2020-12-09 10:13:45,244 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-12-09 10:13:45,246 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 10:13:45,247 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 10:13:45,349 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2707da27-2948-4cca-a4e9-993608c41b7e/bin/utaipan/witness.graphml [2020-12-09 10:13:45,349 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 10:13:45,350 INFO L168 Benchmark]: Toolchain (without parser) took 6873.92 ms. Allocated memory was 83.9 MB in the beginning and 274.7 MB in the end (delta: 190.8 MB). Free memory was 53.3 MB in the beginning and 228.9 MB in the end (delta: -175.6 MB). Peak memory consumption was 87.4 MB. Max. memory is 16.1 GB. [2020-12-09 10:13:45,350 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 83.9 MB. Free memory was 61.8 MB in the beginning and 61.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:13:45,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.16 ms. Allocated memory is still 83.9 MB. Free memory was 53.2 MB in the beginning and 45.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 10:13:45,351 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.84 ms. Allocated memory is still 83.9 MB. Free memory was 45.2 MB in the beginning and 59.1 MB in the end (delta: -14.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-12-09 10:13:45,351 INFO L168 Benchmark]: Boogie Preprocessor took 44.01 ms. Allocated memory is still 83.9 MB. Free memory was 59.1 MB in the beginning and 54.8 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 10:13:45,351 INFO L168 Benchmark]: RCFGBuilder took 1256.59 ms. Allocated memory was 83.9 MB in the beginning and 125.8 MB in the end (delta: 41.9 MB). Free memory was 54.8 MB in the beginning and 85.0 MB in the end (delta: -30.3 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.1 GB. [2020-12-09 10:13:45,352 INFO L168 Benchmark]: TraceAbstraction took 4955.04 ms. Allocated memory was 125.8 MB in the beginning and 274.7 MB in the end (delta: 148.9 MB). Free memory was 84.2 MB in the beginning and 162.5 MB in the end (delta: -78.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 16.1 GB. [2020-12-09 10:13:45,352 INFO L168 Benchmark]: Witness Printer took 126.42 ms. Allocated memory is still 274.7 MB. Free memory was 162.5 MB in the beginning and 228.9 MB in the end (delta: -66.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 10:13:45,354 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 83.9 MB. Free memory was 61.8 MB in the beginning and 61.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 412.16 ms. Allocated memory is still 83.9 MB. Free memory was 53.2 MB in the beginning and 45.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.84 ms. Allocated memory is still 83.9 MB. Free memory was 45.2 MB in the beginning and 59.1 MB in the end (delta: -14.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.01 ms. Allocated memory is still 83.9 MB. Free memory was 59.1 MB in the beginning and 54.8 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1256.59 ms. Allocated memory was 83.9 MB in the beginning and 125.8 MB in the end (delta: 41.9 MB). Free memory was 54.8 MB in the beginning and 85.0 MB in the end (delta: -30.3 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4955.04 ms. Allocated memory was 125.8 MB in the beginning and 274.7 MB in the end (delta: 148.9 MB). Free memory was 84.2 MB in the beginning and 162.5 MB in the end (delta: -78.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 16.1 GB. * Witness Printer took 126.42 ms. Allocated memory is still 274.7 MB. Free memory was 162.5 MB in the beginning and 228.9 MB in the end (delta: -66.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 495]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((a21 == 1 && a20 == 1) && !(a7 == 1)) || (!(a7 == 1) && a20 <= 0)) || (a21 == 1 && ((a20 == 1 && a17 == 1) || (a20 == 1 && 5 <= a16)))) || (a16 <= 5 && a20 <= 0)) || (a20 == 1 && a8 <= 13) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((a21 == 1 && a20 == 1) && !(a7 == 1)) || (!(a7 == 1) && a20 <= 0)) || (a21 == 1 && ((a20 == 1 && a17 == 1) || (a20 == 1 && 5 <= a16)))) || (a16 <= 5 && a20 <= 0)) || (a20 == 1 && a8 <= 13) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 547 SDtfs, 610 SDslu, 48 SDs, 0 SdLazy, 2366 SolverSat, 560 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 466 GetRequests, 448 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 639 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 107 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2244 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 234 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 1576 NumberOfCodeBlocks, 1576 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1781 ConstructedInterpolants, 0 QuantifiedInterpolants, 1127991 SizeOfPredicates, 0 NumberOfNonLiveVariables, 486 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 1496/1584 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...