./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6a8a8426-5995-45ba-8340-6799f7bf2e7b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6a8a8426-5995-45ba-8340-6799f7bf2e7b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6a8a8426-5995-45ba-8340-6799f7bf2e7b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6a8a8426-5995-45ba-8340-6799f7bf2e7b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label05.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6a8a8426-5995-45ba-8340-6799f7bf2e7b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6a8a8426-5995-45ba-8340-6799f7bf2e7b/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 57986f5df1647173a809f7445e253a7d11975932 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:39:47,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:39:47,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:39:47,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:39:47,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:39:47,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:39:47,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:39:47,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:39:47,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:39:47,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:39:47,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:39:47,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:39:47,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:39:47,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:39:47,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:39:47,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:39:47,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:39:47,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:39:47,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:39:47,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:39:47,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:39:47,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:39:47,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:39:47,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:39:47,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:39:47,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:39:47,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:39:47,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:39:47,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:39:47,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:39:47,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:39:47,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:39:47,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:39:47,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:39:47,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:39:47,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:39:47,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:39:47,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:39:47,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:39:47,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:39:47,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:39:47,667 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6a8a8426-5995-45ba-8340-6799f7bf2e7b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:39:47,692 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:39:47,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:39:47,693 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:39:47,693 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:39:47,694 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:39:47,694 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:39:47,694 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:39:47,694 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:39:47,695 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:39:47,695 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:39:47,695 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:39:47,695 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:39:47,696 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:39:47,696 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:39:47,696 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:39:47,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:39:47,697 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:39:47,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:39:47,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:39:47,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:39:47,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:39:47,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:39:47,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:39:47,699 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:39:47,699 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:39:47,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:39:47,700 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:39:47,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:39:47,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:39:47,700 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:39:47,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:39:47,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:39:47,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:39:47,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:39:47,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:39:47,702 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:39:47,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:39:47,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:39:47,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:39:47,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:39:47,703 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_6a8a8426-5995-45ba-8340-6799f7bf2e7b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6a8a8426-5995-45ba-8340-6799f7bf2e7b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57986f5df1647173a809f7445e253a7d11975932 [2020-11-28 07:39:47,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:39:47,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:39:47,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:39:47,974 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:39:47,976 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:39:47,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6a8a8426-5995-45ba-8340-6799f7bf2e7b/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label05.c [2020-11-28 07:39:48,051 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6a8a8426-5995-45ba-8340-6799f7bf2e7b/bin/utaipan/data/ddf11874e/3c5b2b7c33a8440ca47bc601f5c19d75/FLAG21645a7b2 [2020-11-28 07:39:48,752 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:39:48,753 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6a8a8426-5995-45ba-8340-6799f7bf2e7b/sv-benchmarks/c/eca-rers2012/Problem01_label05.c [2020-11-28 07:39:48,775 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6a8a8426-5995-45ba-8340-6799f7bf2e7b/bin/utaipan/data/ddf11874e/3c5b2b7c33a8440ca47bc601f5c19d75/FLAG21645a7b2 [2020-11-28 07:39:48,977 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6a8a8426-5995-45ba-8340-6799f7bf2e7b/bin/utaipan/data/ddf11874e/3c5b2b7c33a8440ca47bc601f5c19d75 [2020-11-28 07:39:48,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:39:48,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:39:48,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:39:48,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:39:48,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:39:48,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:39:48" (1/1) ... [2020-11-28 07:39:48,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a6761fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:48, skipping insertion in model container [2020-11-28 07:39:48,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:39:48" (1/1) ... [2020-11-28 07:39:49,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:39:49,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:39:49,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:39:49,524 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:39:49,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:39:49,656 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:39:49,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49 WrapperNode [2020-11-28 07:39:49,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:39:49,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:39:49,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:39:49,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:39:49,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (1/1) ... [2020-11-28 07:39:49,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (1/1) ... [2020-11-28 07:39:49,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:39:49,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:39:49,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:39:49,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:39:49,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (1/1) ... [2020-11-28 07:39:49,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (1/1) ... [2020-11-28 07:39:49,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (1/1) ... [2020-11-28 07:39:49,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (1/1) ... [2020-11-28 07:39:49,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (1/1) ... [2020-11-28 07:39:49,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (1/1) ... [2020-11-28 07:39:49,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (1/1) ... [2020-11-28 07:39:49,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:39:49,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:39:49,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:39:49,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:39:49,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a8a8426-5995-45ba-8340-6799f7bf2e7b/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 [2020-11-28 07:39:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:39:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:39:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:39:49,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:39:52,796 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:39:52,797 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:39:52,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:39:52 BoogieIcfgContainer [2020-11-28 07:39:52,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:39:52,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:39:52,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:39:52,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:39:52,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:39:48" (1/3) ... [2020-11-28 07:39:52,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31747609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:39:52, skipping insertion in model container [2020-11-28 07:39:52,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (2/3) ... [2020-11-28 07:39:52,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31747609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:39:52, skipping insertion in model container [2020-11-28 07:39:52,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:39:52" (3/3) ... [2020-11-28 07:39:52,809 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2020-11-28 07:39:52,820 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:39:52,824 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:39:52,836 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:39:52,860 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:39:52,860 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:39:52,860 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:39:52,860 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:39:52,861 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:39:52,861 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:39:52,861 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:39:52,861 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:39:52,876 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-28 07:39:52,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-28 07:39:52,884 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:52,885 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] [2020-11-28 07:39:52,885 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:52,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:52,891 INFO L82 PathProgramCache]: Analyzing trace with hash 2004381228, now seen corresponding path program 1 times [2020-11-28 07:39:52,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:52,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492045198] [2020-11-28 07:39:52,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:53,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492045198] [2020-11-28 07:39:53,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:53,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:39:53,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999167955] [2020-11-28 07:39:53,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:39:53,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:39:53,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:39:53,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:39:53,240 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-28 07:39:54,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:54,035 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-28 07:39:54,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:39:54,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-28 07:39:54,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:54,059 INFO L225 Difference]: With dead ends: 224 [2020-11-28 07:39:54,059 INFO L226 Difference]: Without dead ends: 145 [2020-11-28 07:39:54,062 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 [2020-11-28 07:39:54,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-28 07:39:54,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-28 07:39:54,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-28 07:39:54,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2020-11-28 07:39:54,141 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2020-11-28 07:39:54,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:54,143 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2020-11-28 07:39:54,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:39:54,143 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2020-11-28 07:39:54,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-28 07:39:54,149 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:54,149 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] [2020-11-28 07:39:54,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:39:54,150 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:54,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:54,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1988673087, now seen corresponding path program 1 times [2020-11-28 07:39:54,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:54,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747290879] [2020-11-28 07:39:54,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:54,256 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:54,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747290879] [2020-11-28 07:39:54,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:54,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:39:54,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420419895] [2020-11-28 07:39:54,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:39:54,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:39:54,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:39:54,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:39:54,264 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2020-11-28 07:39:54,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:54,980 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2020-11-28 07:39:54,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:39:54,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-11-28 07:39:54,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:54,984 INFO L225 Difference]: With dead ends: 431 [2020-11-28 07:39:54,984 INFO L226 Difference]: Without dead ends: 287 [2020-11-28 07:39:54,985 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 [2020-11-28 07:39:54,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-28 07:39:55,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-11-28 07:39:55,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-28 07:39:55,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2020-11-28 07:39:55,020 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 77 [2020-11-28 07:39:55,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:55,021 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2020-11-28 07:39:55,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:39:55,021 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2020-11-28 07:39:55,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-11-28 07:39:55,028 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:55,028 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:55,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:39:55,029 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:55,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:55,030 INFO L82 PathProgramCache]: Analyzing trace with hash 2005730778, now seen corresponding path program 1 times [2020-11-28 07:39:55,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:55,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301367038] [2020-11-28 07:39:55,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:55,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301367038] [2020-11-28 07:39:55,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:55,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:39:55,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413089752] [2020-11-28 07:39:55,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:39:55,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:39:55,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:39:55,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:39:55,237 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand 4 states. [2020-11-28 07:39:56,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:56,119 INFO L93 Difference]: Finished difference Result 715 states and 1141 transitions. [2020-11-28 07:39:56,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:39:56,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-11-28 07:39:56,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:56,123 INFO L225 Difference]: With dead ends: 715 [2020-11-28 07:39:56,123 INFO L226 Difference]: Without dead ends: 429 [2020-11-28 07:39:56,125 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 [2020-11-28 07:39:56,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-11-28 07:39:56,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2020-11-28 07:39:56,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-28 07:39:56,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 639 transitions. [2020-11-28 07:39:56,159 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 639 transitions. Word has length 105 [2020-11-28 07:39:56,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:56,160 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 639 transitions. [2020-11-28 07:39:56,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:39:56,160 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 639 transitions. [2020-11-28 07:39:56,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-11-28 07:39:56,168 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:56,168 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:56,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:39:56,168 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:56,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:56,169 INFO L82 PathProgramCache]: Analyzing trace with hash 38856612, now seen corresponding path program 1 times [2020-11-28 07:39:56,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:56,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134085187] [2020-11-28 07:39:56,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:56,271 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-28 07:39:56,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134085187] [2020-11-28 07:39:56,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:56,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:39:56,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587110215] [2020-11-28 07:39:56,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:39:56,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:39:56,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:39:56,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:39:56,274 INFO L87 Difference]: Start difference. First operand 429 states and 639 transitions. Second operand 3 states. [2020-11-28 07:39:56,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:56,695 INFO L93 Difference]: Finished difference Result 999 states and 1479 transitions. [2020-11-28 07:39:56,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:39:56,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-11-28 07:39:56,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:56,702 INFO L225 Difference]: With dead ends: 999 [2020-11-28 07:39:56,702 INFO L226 Difference]: Without dead ends: 571 [2020-11-28 07:39:56,704 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 [2020-11-28 07:39:56,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-11-28 07:39:56,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 429. [2020-11-28 07:39:56,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-28 07:39:56,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 627 transitions. [2020-11-28 07:39:56,723 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 627 transitions. Word has length 109 [2020-11-28 07:39:56,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:56,723 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 627 transitions. [2020-11-28 07:39:56,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:39:56,724 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 627 transitions. [2020-11-28 07:39:56,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-11-28 07:39:56,725 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:56,726 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:56,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:39:56,726 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:56,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:56,727 INFO L82 PathProgramCache]: Analyzing trace with hash 920135646, now seen corresponding path program 1 times [2020-11-28 07:39:56,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:56,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706124563] [2020-11-28 07:39:56,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:56,855 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-28 07:39:56,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706124563] [2020-11-28 07:39:56,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:56,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:39:56,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847677413] [2020-11-28 07:39:56,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:39:56,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:39:56,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:39:56,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:39:56,858 INFO L87 Difference]: Start difference. First operand 429 states and 627 transitions. Second operand 3 states. [2020-11-28 07:39:57,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:57,285 INFO L93 Difference]: Finished difference Result 1070 states and 1538 transitions. [2020-11-28 07:39:57,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:39:57,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-11-28 07:39:57,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:57,289 INFO L225 Difference]: With dead ends: 1070 [2020-11-28 07:39:57,289 INFO L226 Difference]: Without dead ends: 571 [2020-11-28 07:39:57,290 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 [2020-11-28 07:39:57,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-11-28 07:39:57,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2020-11-28 07:39:57,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-28 07:39:57,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 711 transitions. [2020-11-28 07:39:57,321 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 711 transitions. Word has length 113 [2020-11-28 07:39:57,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:57,322 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 711 transitions. [2020-11-28 07:39:57,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:39:57,323 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 711 transitions. [2020-11-28 07:39:57,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-11-28 07:39:57,325 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:57,326 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:57,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:39:57,326 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:57,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:57,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1460868266, now seen corresponding path program 1 times [2020-11-28 07:39:57,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:57,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924878136] [2020-11-28 07:39:57,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:57,428 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-11-28 07:39:57,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924878136] [2020-11-28 07:39:57,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:57,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:39:57,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605582505] [2020-11-28 07:39:57,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:39:57,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:39:57,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:39:57,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:39:57,432 INFO L87 Difference]: Start difference. First operand 571 states and 711 transitions. Second operand 3 states. [2020-11-28 07:39:57,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:57,892 INFO L93 Difference]: Finished difference Result 1496 states and 1860 transitions. [2020-11-28 07:39:57,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:39:57,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-11-28 07:39:57,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:57,902 INFO L225 Difference]: With dead ends: 1496 [2020-11-28 07:39:57,902 INFO L226 Difference]: Without dead ends: 926 [2020-11-28 07:39:57,903 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 [2020-11-28 07:39:57,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-28 07:39:57,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 713. [2020-11-28 07:39:57,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-11-28 07:39:57,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 889 transitions. [2020-11-28 07:39:57,941 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 889 transitions. Word has length 122 [2020-11-28 07:39:57,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:57,942 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 889 transitions. [2020-11-28 07:39:57,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:39:57,948 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 889 transitions. [2020-11-28 07:39:57,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-11-28 07:39:57,950 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:57,951 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:57,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:39:57,951 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:57,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:57,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1698488802, now seen corresponding path program 1 times [2020-11-28 07:39:57,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:57,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270538695] [2020-11-28 07:39:57,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-11-28 07:39:58,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270538695] [2020-11-28 07:39:58,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:58,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:39:58,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884915264] [2020-11-28 07:39:58,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:39:58,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:39:58,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:39:58,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:39:58,062 INFO L87 Difference]: Start difference. First operand 713 states and 889 transitions. Second operand 3 states. [2020-11-28 07:39:58,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:58,473 INFO L93 Difference]: Finished difference Result 1567 states and 1960 transitions. [2020-11-28 07:39:58,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:39:58,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-11-28 07:39:58,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:58,479 INFO L225 Difference]: With dead ends: 1567 [2020-11-28 07:39:58,479 INFO L226 Difference]: Without dead ends: 855 [2020-11-28 07:39:58,480 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 [2020-11-28 07:39:58,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-11-28 07:39:58,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 855. [2020-11-28 07:39:58,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-11-28 07:39:58,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1056 transitions. [2020-11-28 07:39:58,512 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1056 transitions. Word has length 138 [2020-11-28 07:39:58,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:58,512 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1056 transitions. [2020-11-28 07:39:58,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:39:58,512 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1056 transitions. [2020-11-28 07:39:58,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-11-28 07:39:58,515 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:58,516 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:58,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:39:58,516 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:58,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:58,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1725636602, now seen corresponding path program 1 times [2020-11-28 07:39:58,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:58,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126971846] [2020-11-28 07:39:58,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:58,644 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-11-28 07:39:58,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126971846] [2020-11-28 07:39:58,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:58,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:39:58,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656080626] [2020-11-28 07:39:58,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:39:58,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:39:58,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:39:58,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:39:58,647 INFO L87 Difference]: Start difference. First operand 855 states and 1056 transitions. Second operand 4 states. [2020-11-28 07:39:59,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:59,230 INFO L93 Difference]: Finished difference Result 1851 states and 2308 transitions. [2020-11-28 07:39:59,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:39:59,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-11-28 07:39:59,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:59,238 INFO L225 Difference]: With dead ends: 1851 [2020-11-28 07:39:59,238 INFO L226 Difference]: Without dead ends: 997 [2020-11-28 07:39:59,239 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 [2020-11-28 07:39:59,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-28 07:39:59,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2020-11-28 07:39:59,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-28 07:39:59,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1230 transitions. [2020-11-28 07:39:59,269 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1230 transitions. Word has length 154 [2020-11-28 07:39:59,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:59,270 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1230 transitions. [2020-11-28 07:39:59,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:39:59,270 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1230 transitions. [2020-11-28 07:39:59,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-28 07:39:59,274 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:59,274 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:59,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:39:59,276 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:59,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:59,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1286997425, now seen corresponding path program 1 times [2020-11-28 07:39:59,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:59,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494196625] [2020-11-28 07:39:59,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 124 proven. 6 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-11-28 07:39:59,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494196625] [2020-11-28 07:39:59,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111303429] [2020-11-28 07:39:59,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a8a8426-5995-45ba-8340-6799f7bf2e7b/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 [2020-11-28 07:39:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:59,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:39:59,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-11-28 07:39:59,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:59,905 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-11-28 07:39:59,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:39:59,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-28 07:39:59,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149758910] [2020-11-28 07:39:59,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:39:59,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:39:59,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:39:59,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:39:59,909 INFO L87 Difference]: Start difference. First operand 997 states and 1230 transitions. Second operand 3 states. [2020-11-28 07:40:00,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:00,334 INFO L93 Difference]: Finished difference Result 1993 states and 2459 transitions. [2020-11-28 07:40:00,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:00,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-11-28 07:40:00,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:00,343 INFO L225 Difference]: With dead ends: 1993 [2020-11-28 07:40:00,343 INFO L226 Difference]: Without dead ends: 997 [2020-11-28 07:40:00,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 339 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:00,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-28 07:40:00,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2020-11-28 07:40:00,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-28 07:40:00,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1099 transitions. [2020-11-28 07:40:00,379 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1099 transitions. Word has length 171 [2020-11-28 07:40:00,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:00,380 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1099 transitions. [2020-11-28 07:40:00,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:00,381 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1099 transitions. [2020-11-28 07:40:00,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-11-28 07:40:00,384 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:00,384 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:00,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-28 07:40:00,600 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:00,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:00,600 INFO L82 PathProgramCache]: Analyzing trace with hash -361635998, now seen corresponding path program 1 times [2020-11-28 07:40:00,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:00,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548754088] [2020-11-28 07:40:00,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:00,760 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 130 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-11-28 07:40:00,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548754088] [2020-11-28 07:40:00,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483897980] [2020-11-28 07:40:00,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a8a8426-5995-45ba-8340-6799f7bf2e7b/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:00,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:40:00,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:00,972 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-11-28 07:40:00,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:01,021 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-11-28 07:40:01,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:40:01,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-28 07:40:01,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032664410] [2020-11-28 07:40:01,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:01,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:01,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:01,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:01,024 INFO L87 Difference]: Start difference. First operand 926 states and 1099 transitions. Second operand 3 states. [2020-11-28 07:40:01,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:01,444 INFO L93 Difference]: Finished difference Result 2135 states and 2557 transitions. [2020-11-28 07:40:01,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:01,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2020-11-28 07:40:01,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:01,452 INFO L225 Difference]: With dead ends: 2135 [2020-11-28 07:40:01,452 INFO L226 Difference]: Without dead ends: 1210 [2020-11-28 07:40:01,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 351 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:01,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-11-28 07:40:01,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2020-11-28 07:40:01,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-28 07:40:01,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1276 transitions. [2020-11-28 07:40:01,486 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1276 transitions. Word has length 177 [2020-11-28 07:40:01,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:01,486 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1276 transitions. [2020-11-28 07:40:01,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:01,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1276 transitions. [2020-11-28 07:40:01,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-11-28 07:40:01,491 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:01,491 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:01,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 07:40:01,718 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:01,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:01,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1794294458, now seen corresponding path program 1 times [2020-11-28 07:40:01,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:01,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750073116] [2020-11-28 07:40:01,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 165 proven. 6 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-11-28 07:40:01,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750073116] [2020-11-28 07:40:01,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252263206] [2020-11-28 07:40:01,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a8a8426-5995-45ba-8340-6799f7bf2e7b/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:01,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:40:01,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-11-28 07:40:02,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:02,124 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-11-28 07:40:02,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:40:02,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-28 07:40:02,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34835528] [2020-11-28 07:40:02,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:02,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:02,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:02,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:02,126 INFO L87 Difference]: Start difference. First operand 1068 states and 1276 transitions. Second operand 3 states. [2020-11-28 07:40:02,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:02,694 INFO L93 Difference]: Finished difference Result 2632 states and 3129 transitions. [2020-11-28 07:40:02,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:02,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 198 [2020-11-28 07:40:02,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:02,704 INFO L225 Difference]: With dead ends: 2632 [2020-11-28 07:40:02,704 INFO L226 Difference]: Without dead ends: 1565 [2020-11-28 07:40:02,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 393 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:02,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2020-11-28 07:40:02,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1494. [2020-11-28 07:40:02,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-11-28 07:40:02,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1753 transitions. [2020-11-28 07:40:02,746 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1753 transitions. Word has length 198 [2020-11-28 07:40:02,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:02,746 INFO L481 AbstractCegarLoop]: Abstraction has 1494 states and 1753 transitions. [2020-11-28 07:40:02,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:02,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1753 transitions. [2020-11-28 07:40:02,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-11-28 07:40:02,751 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:02,752 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:02,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-28 07:40:02,967 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:02,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:02,968 INFO L82 PathProgramCache]: Analyzing trace with hash -273338752, now seen corresponding path program 1 times [2020-11-28 07:40:02,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:02,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288896329] [2020-11-28 07:40:02,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:03,318 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 178 proven. 49 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-28 07:40:03,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288896329] [2020-11-28 07:40:03,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106967839] [2020-11-28 07:40:03,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a8a8426-5995-45ba-8340-6799f7bf2e7b/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:03,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:40:03,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:03,534 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-11-28 07:40:03,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:03,597 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-11-28 07:40:03,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:40:03,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-11-28 07:40:03,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287701521] [2020-11-28 07:40:03,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:03,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:03,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:03,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:40:03,607 INFO L87 Difference]: Start difference. First operand 1494 states and 1753 transitions. Second operand 3 states. [2020-11-28 07:40:04,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:04,025 INFO L93 Difference]: Finished difference Result 3271 states and 3842 transitions. [2020-11-28 07:40:04,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:04,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-11-28 07:40:04,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:04,035 INFO L225 Difference]: With dead ends: 3271 [2020-11-28 07:40:04,036 INFO L226 Difference]: Without dead ends: 1778 [2020-11-28 07:40:04,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 431 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:40:04,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2020-11-28 07:40:04,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1494. [2020-11-28 07:40:04,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-11-28 07:40:04,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1753 transitions. [2020-11-28 07:40:04,076 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1753 transitions. Word has length 217 [2020-11-28 07:40:04,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:04,077 INFO L481 AbstractCegarLoop]: Abstraction has 1494 states and 1753 transitions. [2020-11-28 07:40:04,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:04,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1753 transitions. [2020-11-28 07:40:04,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-11-28 07:40:04,082 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:04,082 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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] [2020-11-28 07:40:04,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:04,295 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:04,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:04,296 INFO L82 PathProgramCache]: Analyzing trace with hash 2072649142, now seen corresponding path program 1 times [2020-11-28 07:40:04,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:04,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455586921] [2020-11-28 07:40:04,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 202 proven. 6 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-11-28 07:40:04,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455586921] [2020-11-28 07:40:04,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999498571] [2020-11-28 07:40:04,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a8a8426-5995-45ba-8340-6799f7bf2e7b/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:04,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:40:04,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:04,664 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-11-28 07:40:04,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-11-28 07:40:04,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:40:04,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2020-11-28 07:40:04,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968010598] [2020-11-28 07:40:04,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:04,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:04,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:04,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:40:04,745 INFO L87 Difference]: Start difference. First operand 1494 states and 1753 transitions. Second operand 4 states. [2020-11-28 07:40:05,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:05,267 INFO L93 Difference]: Finished difference Result 2843 states and 3306 transitions. [2020-11-28 07:40:05,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:40:05,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 229 [2020-11-28 07:40:05,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:05,268 INFO L225 Difference]: With dead ends: 2843 [2020-11-28 07:40:05,268 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:40:05,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:40:05,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:40:05,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:40:05,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:40:05,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:40:05,271 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 229 [2020-11-28 07:40:05,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:05,272 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:40:05,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:05,272 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:40:05,272 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:40:05,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-28 07:40:05,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:40:05,743 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2020-11-28 07:40:05,935 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2020-11-28 07:40:05,938 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-28 07:40:05,938 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-28 07:40:05,938 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-28 07:40:05,938 INFO L274 CegarLoopResult]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:40:05,938 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-28 07:40:05,938 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-28 07:40:05,938 INFO L274 CegarLoopResult]: For program point L468(line 468) no Hoare annotation was computed. [2020-11-28 07:40:05,938 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-28 07:40:05,938 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-28 07:40:05,939 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-28 07:40:05,939 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-28 07:40:05,939 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-28 07:40:05,939 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-28 07:40:05,939 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-28 07:40:05,939 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-28 07:40:05,939 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-28 07:40:05,939 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-28 07:40:05,939 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-28 07:40:05,940 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-28 07:40:05,941 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-28 07:40:05,941 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-28 07:40:05,941 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-28 07:40:05,941 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-28 07:40:05,941 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-28 07:40:05,942 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-28 07:40:05,942 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-28 07:40:05,942 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-28 07:40:05,942 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-28 07:40:05,942 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-28 07:40:05,942 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-28 07:40:05,942 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-28 07:40:05,942 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-28 07:40:05,942 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-28 07:40:05,942 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-28 07:40:05,943 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-28 07:40:05,943 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-28 07:40:05,943 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-28 07:40:05,943 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-28 07:40:05,943 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:40:05,943 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-28 07:40:05,943 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-28 07:40:05,943 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-28 07:40:05,944 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse8 (= ~a20~0 1))) (let ((.cse7 (<= ~a7~0 0)) (.cse5 (<= ~a16~0 4)) (.cse4 (<= 15 ~a8~0)) (.cse3 (= ~a21~0 1)) (.cse0 (<= ~a16~0 5)) (.cse6 (<= ~a17~0 0)) (.cse9 (not .cse8)) (.cse1 (<= ~a21~0 0)) (.cse2 (= ~a17~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse2) (and .cse3 .cse5 .cse6 .cse7) (and .cse6 .cse8 .cse1) (and .cse3 .cse7 .cse8 .cse2) (and .cse5 .cse8 .cse2) (and .cse6 .cse9 .cse4) (and (<= 14 ~a8~0) .cse3 .cse6 .cse8) (and .cse0 .cse6 .cse9) (and .cse1 .cse8 .cse2)))) [2020-11-28 07:40:05,944 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-28 07:40:05,944 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-28 07:40:05,944 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-28 07:40:05,944 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-28 07:40:05,944 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-28 07:40:05,944 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-28 07:40:05,944 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-28 07:40:05,944 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:40:05,944 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-28 07:40:05,945 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-28 07:40:05,945 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-28 07:40:05,945 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-28 07:40:05,945 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-28 07:40:05,945 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-28 07:40:05,945 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-28 07:40:05,945 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-28 07:40:05,945 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-28 07:40:05,945 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-28 07:40:05,945 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-28 07:40:05,945 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-28 07:40:05,946 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-28 07:40:05,946 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-28 07:40:05,946 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-28 07:40:05,946 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse8 (= ~a20~0 1))) (let ((.cse7 (<= ~a7~0 0)) (.cse5 (<= ~a16~0 4)) (.cse4 (<= 15 ~a8~0)) (.cse3 (= ~a21~0 1)) (.cse0 (<= ~a16~0 5)) (.cse6 (<= ~a17~0 0)) (.cse9 (not .cse8)) (.cse1 (<= ~a21~0 0)) (.cse2 (= ~a17~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse2) (and .cse3 .cse5 .cse6 .cse7) (and .cse6 .cse8 .cse1) (and .cse3 .cse7 .cse8 .cse2) (and .cse5 .cse8 .cse2) (and .cse6 .cse9 .cse4) (and (<= 14 ~a8~0) .cse3 .cse6 .cse8) (and .cse0 .cse6 .cse9) (and .cse1 .cse8 .cse2)))) [2020-11-28 07:40:05,947 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-28 07:40:05,947 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:40:05,947 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-28 07:40:05,947 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-28 07:40:05,947 INFO L274 CegarLoopResult]: For program point L464-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:40:05,947 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-28 07:40:05,947 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-28 07:40:05,947 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-28 07:40:05,947 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-28 07:40:05,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:40:05 BoogieIcfgContainer [2020-11-28 07:40:05,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:40:05,994 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:40:05,994 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:40:05,994 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:40:05,994 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:39:52" (3/4) ... [2020-11-28 07:40:05,997 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:40:06,022 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-28 07:40:06,024 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-28 07:40:06,025 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 07:40:06,027 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 07:40:06,167 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6a8a8426-5995-45ba-8340-6799f7bf2e7b/bin/utaipan/witness.graphml [2020-11-28 07:40:06,167 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:40:06,168 INFO L168 Benchmark]: Toolchain (without parser) took 17187.17 ms. Allocated memory was 92.3 MB in the beginning and 390.1 MB in the end (delta: 297.8 MB). Free memory was 59.4 MB in the beginning and 351.7 MB in the end (delta: -292.3 MB). Peak memory consumption was 179.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:06,168 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 92.3 MB. Free memory is still 51.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:06,169 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.71 ms. Allocated memory is still 92.3 MB. Free memory was 59.2 MB in the beginning and 51.6 MB in the end (delta: 7.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:06,169 INFO L168 Benchmark]: Boogie Procedure Inliner took 116.64 ms. Allocated memory is still 92.3 MB. Free memory was 51.6 MB in the beginning and 46.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:06,169 INFO L168 Benchmark]: Boogie Preprocessor took 64.31 ms. Allocated memory is still 92.3 MB. Free memory was 45.6 MB in the beginning and 41.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:06,170 INFO L168 Benchmark]: RCFGBuilder took 2959.20 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 41.4 MB in the beginning and 102.4 MB in the end (delta: -61.0 MB). Peak memory consumption was 46.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:06,170 INFO L168 Benchmark]: TraceAbstraction took 13192.42 ms. Allocated memory was 134.2 MB in the beginning and 299.9 MB in the end (delta: 165.7 MB). Free memory was 101.4 MB in the beginning and 104.6 MB in the end (delta: -3.2 MB). Peak memory consumption was 163.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:06,171 INFO L168 Benchmark]: Witness Printer took 173.54 ms. Allocated memory was 299.9 MB in the beginning and 390.1 MB in the end (delta: 90.2 MB). Free memory was 104.6 MB in the beginning and 351.7 MB in the end (delta: -247.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:06,173 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 92.3 MB. Free memory is still 51.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 669.71 ms. Allocated memory is still 92.3 MB. Free memory was 59.2 MB in the beginning and 51.6 MB in the end (delta: 7.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 116.64 ms. Allocated memory is still 92.3 MB. Free memory was 51.6 MB in the beginning and 46.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.31 ms. Allocated memory is still 92.3 MB. Free memory was 45.6 MB in the beginning and 41.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2959.20 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 41.4 MB in the beginning and 102.4 MB in the end (delta: -61.0 MB). Peak memory consumption was 46.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13192.42 ms. Allocated memory was 134.2 MB in the beginning and 299.9 MB in the end (delta: 165.7 MB). Free memory was 101.4 MB in the beginning and 104.6 MB in the end (delta: -3.2 MB). Peak memory consumption was 163.5 MB. Max. memory is 16.1 GB. * Witness Printer took 173.54 ms. Allocated memory was 299.9 MB in the beginning and 390.1 MB in the end (delta: 90.2 MB). Free memory was 104.6 MB in the beginning and 351.7 MB in the end (delta: -247.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((a16 <= 5 && a21 <= 0) && a17 == 1) || ((a21 == 1 && 15 <= a8) && a17 == 1)) || (((a21 == 1 && a16 <= 4) && a17 <= 0) && a7 <= 0)) || ((a17 <= 0 && a20 == 1) && a21 <= 0)) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || ((a17 <= 0 && !(a20 == 1)) && 15 <= a8)) || (((14 <= a8 && a21 == 1) && a17 <= 0) && a20 == 1)) || ((a16 <= 5 && a17 <= 0) && !(a20 == 1))) || ((a21 <= 0 && a20 == 1) && a17 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((((a16 <= 5 && a21 <= 0) && a17 == 1) || ((a21 == 1 && 15 <= a8) && a17 == 1)) || (((a21 == 1 && a16 <= 4) && a17 <= 0) && a7 <= 0)) || ((a17 <= 0 && a20 == 1) && a21 <= 0)) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || ((a17 <= 0 && !(a20 == 1)) && 15 <= a8)) || (((14 <= a8 && a21 == 1) && a17 <= 0) && a20 == 1)) || ((a16 <= 5 && a17 <= 0) && !(a20 == 1))) || ((a21 <= 0 && a20 == 1) && a17 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.6s, OverallIterations: 13, TraceHistogramMax: 7, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 544 SDtfs, 924 SDslu, 60 SDs, 0 SdLazy, 2965 SolverSat, 660 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2014 GetRequests, 1978 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1494occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 923 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 225 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1086 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 314 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 2873 NumberOfCodeBlocks, 2873 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 3842 ConstructedInterpolants, 0 QuantifiedInterpolants, 1519841 SizeOfPredicates, 7 NumberOfNonLiveVariables, 2216 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 23 InterpolantComputations, 18 PerfectInterpolantSequences, 4115/4188 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...