./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.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_fc90f8c4-fa16-4361-9089-bee9ebb85d1f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fc90f8c4-fa16-4361-9089-bee9ebb85d1f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fc90f8c4-fa16-4361-9089-bee9ebb85d1f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fc90f8c4-fa16-4361-9089-bee9ebb85d1f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fc90f8c4-fa16-4361-9089-bee9ebb85d1f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fc90f8c4-fa16-4361-9089-bee9ebb85d1f/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 5b57e964dbb610d8a39ef60225ec1dbb75ce4568 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 07:33:39,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:33:39,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:33:39,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:33:39,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:33:39,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:33:39,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:33:39,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:33:39,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:33:39,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:33:39,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:33:39,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:33:39,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:33:39,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:33:39,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:33:39,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:33:39,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:33:39,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:33:39,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:33:39,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:33:39,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:33:39,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:33:39,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:33:39,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:33:39,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:33:39,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:33:39,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:33:39,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:33:39,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:33:39,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:33:39,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:33:39,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:33:39,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:33:39,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:33:39,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:33:39,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:33:39,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:33:39,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:33:39,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:33:39,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:33:39,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:33:39,731 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fc90f8c4-fa16-4361-9089-bee9ebb85d1f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:33:39,756 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:33:39,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:33:39,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:33:39,758 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:33:39,758 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:33:39,759 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:33:39,759 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:33:39,760 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:33:39,760 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:33:39,760 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:33:39,761 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:33:39,761 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:33:39,762 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:33:39,762 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:33:39,762 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:33:39,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:33:39,764 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:33:39,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:33:39,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:33:39,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:33:39,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:33:39,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:33:39,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:33:39,766 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:33:39,767 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:33:39,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:33:39,768 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:33:39,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:33:39,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:33:39,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:33:39,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:33:39,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:33:39,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:33:39,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:33:39,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:33:39,771 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:33:39,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:33:39,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:33:39,772 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:33:39,773 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:33:39,775 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_fc90f8c4-fa16-4361-9089-bee9ebb85d1f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fc90f8c4-fa16-4361-9089-bee9ebb85d1f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b57e964dbb610d8a39ef60225ec1dbb75ce4568 [2020-11-28 07:33:40,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:33:40,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:33:40,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:33:40,096 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:33:40,097 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:33:40,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fc90f8c4-fa16-4361-9089-bee9ebb85d1f/bin/utaipan/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2020-11-28 07:33:40,180 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc90f8c4-fa16-4361-9089-bee9ebb85d1f/bin/utaipan/data/b09bd72e3/647c7b00fdc346f081fa8d87c539c420/FLAG496cb3170 [2020-11-28 07:33:40,817 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:33:40,818 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fc90f8c4-fa16-4361-9089-bee9ebb85d1f/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2020-11-28 07:33:40,835 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc90f8c4-fa16-4361-9089-bee9ebb85d1f/bin/utaipan/data/b09bd72e3/647c7b00fdc346f081fa8d87c539c420/FLAG496cb3170 [2020-11-28 07:33:41,155 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fc90f8c4-fa16-4361-9089-bee9ebb85d1f/bin/utaipan/data/b09bd72e3/647c7b00fdc346f081fa8d87c539c420 [2020-11-28 07:33:41,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:33:41,164 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:33:41,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:33:41,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:33:41,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:33:41,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:33:41" (1/1) ... [2020-11-28 07:33:41,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177b0038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:41, skipping insertion in model container [2020-11-28 07:33:41,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:33:41" (1/1) ... [2020-11-28 07:33:41,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:33:41,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:33:41,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:33:41,521 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:33:41,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:33:41,612 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:33:41,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:41 WrapperNode [2020-11-28 07:33:41,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:33:41,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:33:41,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:33:41,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:33:41,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:41" (1/1) ... [2020-11-28 07:33:41,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:41" (1/1) ... [2020-11-28 07:33:41,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:33:41,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:33:41,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:33:41,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:33:41,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:41" (1/1) ... [2020-11-28 07:33:41,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:41" (1/1) ... [2020-11-28 07:33:41,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:41" (1/1) ... [2020-11-28 07:33:41,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:41" (1/1) ... [2020-11-28 07:33:41,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:41" (1/1) ... [2020-11-28 07:33:41,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:41" (1/1) ... [2020-11-28 07:33:41,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:41" (1/1) ... [2020-11-28 07:33:41,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:33:41,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:33:41,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:33:41,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:33:41,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc90f8c4-fa16-4361-9089-bee9ebb85d1f/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 07:33:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:33:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:33:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:33:41,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:33:42,566 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:33:42,567 INFO L298 CfgBuilder]: Removed 40 assume(true) statements. [2020-11-28 07:33:42,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:33:42 BoogieIcfgContainer [2020-11-28 07:33:42,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:33:42,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:33:42,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:33:42,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:33:42,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:33:41" (1/3) ... [2020-11-28 07:33:42,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb4e945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:33:42, skipping insertion in model container [2020-11-28 07:33:42,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:41" (2/3) ... [2020-11-28 07:33:42,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb4e945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:33:42, skipping insertion in model container [2020-11-28 07:33:42,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:33:42" (3/3) ... [2020-11-28 07:33:42,578 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+lhb-reducer.c [2020-11-28 07:33:42,589 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:33:42,594 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2020-11-28 07:33:42,606 INFO L253 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-11-28 07:33:42,631 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:33:42,632 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:33:42,632 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:33:42,632 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:33:42,632 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:33:42,632 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:33:42,633 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:33:42,633 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:33:42,651 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-11-28 07:33:42,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:33:42,656 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:42,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:42,658 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:42,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:42,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1182418176, now seen corresponding path program 1 times [2020-11-28 07:33:42,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:42,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161108180] [2020-11-28 07:33:42,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:42,865 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 07:33:42,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161108180] [2020-11-28 07:33:42,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:42,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:33:42,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808008324] [2020-11-28 07:33:42,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:33:42,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:42,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:33:42,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:33:42,891 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-11-28 07:33:43,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:43,084 INFO L93 Difference]: Finished difference Result 118 states and 159 transitions. [2020-11-28 07:33:43,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:33:43,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 07:33:43,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:43,094 INFO L225 Difference]: With dead ends: 118 [2020-11-28 07:33:43,095 INFO L226 Difference]: Without dead ends: 106 [2020-11-28 07:33:43,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:43,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-28 07:33:43,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 68. [2020-11-28 07:33:43,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-28 07:33:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-11-28 07:33:43,158 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 7 [2020-11-28 07:33:43,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:43,159 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-11-28 07:33:43,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:33:43,160 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-11-28 07:33:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:33:43,160 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:43,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:43,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:33:43,162 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:43,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:43,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1178169984, now seen corresponding path program 1 times [2020-11-28 07:33:43,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:43,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210106755] [2020-11-28 07:33:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:43,239 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 07:33:43,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210106755] [2020-11-28 07:33:43,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:43,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:33:43,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119399514] [2020-11-28 07:33:43,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:33:43,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:43,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:33:43,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:33:43,243 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 4 states. [2020-11-28 07:33:43,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:43,429 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2020-11-28 07:33:43,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:33:43,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 07:33:43,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:43,432 INFO L225 Difference]: With dead ends: 106 [2020-11-28 07:33:43,432 INFO L226 Difference]: Without dead ends: 104 [2020-11-28 07:33:43,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:43,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-28 07:33:43,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 66. [2020-11-28 07:33:43,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-28 07:33:43,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-11-28 07:33:43,454 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 7 [2020-11-28 07:33:43,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:43,455 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-11-28 07:33:43,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:33:43,455 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-11-28 07:33:43,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:33:43,457 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:43,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:43,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:33:43,458 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:43,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:43,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1895962006, now seen corresponding path program 1 times [2020-11-28 07:33:43,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:43,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519025673] [2020-11-28 07:33:43,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:43,576 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 07:33:43,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519025673] [2020-11-28 07:33:43,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:43,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:33:43,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843180351] [2020-11-28 07:33:43,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:33:43,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:43,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:33:43,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:43,579 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 5 states. [2020-11-28 07:33:43,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:43,731 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-11-28 07:33:43,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:33:43,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 07:33:43,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:43,733 INFO L225 Difference]: With dead ends: 68 [2020-11-28 07:33:43,734 INFO L226 Difference]: Without dead ends: 66 [2020-11-28 07:33:43,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:33:43,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-28 07:33:43,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-11-28 07:33:43,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-28 07:33:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-11-28 07:33:43,740 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 10 [2020-11-28 07:33:43,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:43,741 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-11-28 07:33:43,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:33:43,745 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-11-28 07:33:43,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:33:43,746 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:43,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:43,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:33:43,746 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:43,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:43,747 INFO L82 PathProgramCache]: Analyzing trace with hash 395032961, now seen corresponding path program 1 times [2020-11-28 07:33:43,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:43,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054134630] [2020-11-28 07:33:43,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:43,842 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 07:33:43,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054134630] [2020-11-28 07:33:43,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:43,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:33:43,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271478550] [2020-11-28 07:33:43,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:33:43,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:43,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:33:43,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:43,844 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2020-11-28 07:33:43,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:43,979 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-11-28 07:33:43,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:33:43,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 07:33:43,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:43,980 INFO L225 Difference]: With dead ends: 66 [2020-11-28 07:33:43,980 INFO L226 Difference]: Without dead ends: 64 [2020-11-28 07:33:43,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:33:43,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-28 07:33:43,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-11-28 07:33:43,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-28 07:33:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-11-28 07:33:43,987 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 10 [2020-11-28 07:33:43,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:43,988 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-11-28 07:33:43,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:33:43,988 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-11-28 07:33:43,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:33:43,988 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:43,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:43,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:33:43,989 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:43,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:43,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1354726155, now seen corresponding path program 1 times [2020-11-28 07:33:43,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:43,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557696036] [2020-11-28 07:33:43,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:44,052 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 07:33:44,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557696036] [2020-11-28 07:33:44,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:44,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:33:44,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056478278] [2020-11-28 07:33:44,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:33:44,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:44,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:33:44,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:33:44,055 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 4 states. [2020-11-28 07:33:44,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:44,148 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-11-28 07:33:44,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:33:44,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 07:33:44,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:44,150 INFO L225 Difference]: With dead ends: 64 [2020-11-28 07:33:44,150 INFO L226 Difference]: Without dead ends: 60 [2020-11-28 07:33:44,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:44,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-28 07:33:44,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-11-28 07:33:44,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-28 07:33:44,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-11-28 07:33:44,156 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 11 [2020-11-28 07:33:44,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:44,157 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-11-28 07:33:44,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:33:44,157 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-11-28 07:33:44,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:33:44,158 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:44,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:44,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:33:44,174 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:44,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:44,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1355335877, now seen corresponding path program 1 times [2020-11-28 07:33:44,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:44,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487359604] [2020-11-28 07:33:44,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:44,256 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 07:33:44,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487359604] [2020-11-28 07:33:44,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:44,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:33:44,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452219348] [2020-11-28 07:33:44,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:33:44,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:44,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:33:44,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:44,259 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 5 states. [2020-11-28 07:33:44,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:44,532 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2020-11-28 07:33:44,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:33:44,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 07:33:44,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:44,534 INFO L225 Difference]: With dead ends: 94 [2020-11-28 07:33:44,534 INFO L226 Difference]: Without dead ends: 92 [2020-11-28 07:33:44,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:33:44,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-28 07:33:44,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2020-11-28 07:33:44,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-28 07:33:44,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-11-28 07:33:44,540 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 11 [2020-11-28 07:33:44,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:44,541 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-11-28 07:33:44,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:33:44,541 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-11-28 07:33:44,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:33:44,542 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:44,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:44,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:33:44,543 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:44,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:44,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1355355737, now seen corresponding path program 1 times [2020-11-28 07:33:44,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:44,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423733868] [2020-11-28 07:33:44,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:44,640 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 07:33:44,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423733868] [2020-11-28 07:33:44,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:44,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:33:44,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746665368] [2020-11-28 07:33:44,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:33:44,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:44,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:33:44,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:44,643 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 5 states. [2020-11-28 07:33:44,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:44,822 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2020-11-28 07:33:44,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:33:44,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 07:33:44,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:44,824 INFO L225 Difference]: With dead ends: 99 [2020-11-28 07:33:44,824 INFO L226 Difference]: Without dead ends: 97 [2020-11-28 07:33:44,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:33:44,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-28 07:33:44,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 54. [2020-11-28 07:33:44,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-28 07:33:44,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-11-28 07:33:44,830 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 11 [2020-11-28 07:33:44,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:44,830 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-11-28 07:33:44,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:33:44,831 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-11-28 07:33:44,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:33:44,831 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:44,831 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:44,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:33:44,832 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:44,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:44,832 INFO L82 PathProgramCache]: Analyzing trace with hash -638874037, now seen corresponding path program 1 times [2020-11-28 07:33:44,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:44,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411562914] [2020-11-28 07:33:44,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:44,909 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 07:33:44,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411562914] [2020-11-28 07:33:44,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:44,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:33:44,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620969774] [2020-11-28 07:33:44,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:33:44,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:44,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:33:44,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:33:44,911 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 4 states. [2020-11-28 07:33:44,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:44,987 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-11-28 07:33:44,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:33:44,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 07:33:44,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:44,988 INFO L225 Difference]: With dead ends: 56 [2020-11-28 07:33:44,988 INFO L226 Difference]: Without dead ends: 52 [2020-11-28 07:33:44,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:44,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-28 07:33:44,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-11-28 07:33:44,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-28 07:33:44,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-11-28 07:33:44,999 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 11 [2020-11-28 07:33:44,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:45,000 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-11-28 07:33:45,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:33:45,000 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-11-28 07:33:45,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:33:45,000 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:45,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:45,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:33:45,001 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:45,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:45,002 INFO L82 PathProgramCache]: Analyzing trace with hash -934254553, now seen corresponding path program 1 times [2020-11-28 07:33:45,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:45,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307197288] [2020-11-28 07:33:45,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:45,198 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 07:33:45,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307197288] [2020-11-28 07:33:45,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:45,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:33:45,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930469079] [2020-11-28 07:33:45,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:33:45,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:45,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:33:45,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:33:45,201 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 6 states. [2020-11-28 07:33:45,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:45,411 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2020-11-28 07:33:45,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:33:45,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-28 07:33:45,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:45,412 INFO L225 Difference]: With dead ends: 117 [2020-11-28 07:33:45,413 INFO L226 Difference]: Without dead ends: 115 [2020-11-28 07:33:45,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:33:45,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-11-28 07:33:45,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 55. [2020-11-28 07:33:45,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-28 07:33:45,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-11-28 07:33:45,419 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 12 [2020-11-28 07:33:45,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:45,419 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-11-28 07:33:45,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:33:45,420 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-11-28 07:33:45,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:33:45,420 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:45,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:45,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:33:45,421 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:45,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:45,425 INFO L82 PathProgramCache]: Analyzing trace with hash -933638873, now seen corresponding path program 1 times [2020-11-28 07:33:45,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:45,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187792211] [2020-11-28 07:33:45,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:45,574 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 07:33:45,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187792211] [2020-11-28 07:33:45,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:45,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:33:45,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970528212] [2020-11-28 07:33:45,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:33:45,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:45,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:33:45,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:33:45,576 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 6 states. [2020-11-28 07:33:45,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:45,754 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2020-11-28 07:33:45,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:33:45,754 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-28 07:33:45,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:45,755 INFO L225 Difference]: With dead ends: 115 [2020-11-28 07:33:45,756 INFO L226 Difference]: Without dead ends: 113 [2020-11-28 07:33:45,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:33:45,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-28 07:33:45,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 57. [2020-11-28 07:33:45,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-28 07:33:45,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2020-11-28 07:33:45,763 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 12 [2020-11-28 07:33:45,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:45,763 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2020-11-28 07:33:45,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:33:45,763 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2020-11-28 07:33:45,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:33:45,764 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:45,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:45,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 07:33:45,765 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:45,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:45,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1690551450, now seen corresponding path program 1 times [2020-11-28 07:33:45,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:45,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613899287] [2020-11-28 07:33:45,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:45,800 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 07:33:45,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613899287] [2020-11-28 07:33:45,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:45,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:33:45,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206554176] [2020-11-28 07:33:45,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:33:45,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:45,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:33:45,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:45,802 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 5 states. [2020-11-28 07:33:45,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:45,919 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-11-28 07:33:45,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:33:45,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 07:33:45,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:45,920 INFO L225 Difference]: With dead ends: 75 [2020-11-28 07:33:45,921 INFO L226 Difference]: Without dead ends: 73 [2020-11-28 07:33:45,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:33:45,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-28 07:33:45,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 55. [2020-11-28 07:33:45,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-28 07:33:45,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-11-28 07:33:45,937 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 12 [2020-11-28 07:33:45,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:45,937 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-11-28 07:33:45,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:33:45,937 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-11-28 07:33:45,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:33:45,938 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:45,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:45,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 07:33:45,939 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:45,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:45,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1692644762, now seen corresponding path program 1 times [2020-11-28 07:33:45,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:45,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967743201] [2020-11-28 07:33:45,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:45,973 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 07:33:45,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967743201] [2020-11-28 07:33:45,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:45,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:33:45,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342419095] [2020-11-28 07:33:45,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:33:45,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:45,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:33:45,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:45,975 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 5 states. [2020-11-28 07:33:46,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:46,080 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2020-11-28 07:33:46,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:33:46,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 07:33:46,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:46,081 INFO L225 Difference]: With dead ends: 56 [2020-11-28 07:33:46,081 INFO L226 Difference]: Without dead ends: 54 [2020-11-28 07:33:46,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:33:46,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-28 07:33:46,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-11-28 07:33:46,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-28 07:33:46,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-11-28 07:33:46,087 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 12 [2020-11-28 07:33:46,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:46,088 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-11-28 07:33:46,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:33:46,088 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-11-28 07:33:46,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:33:46,089 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:46,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:46,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 07:33:46,090 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:46,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:46,091 INFO L82 PathProgramCache]: Analyzing trace with hash 869404081, now seen corresponding path program 1 times [2020-11-28 07:33:46,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:46,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395054985] [2020-11-28 07:33:46,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:46,127 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 07:33:46,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395054985] [2020-11-28 07:33:46,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:46,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:33:46,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373294703] [2020-11-28 07:33:46,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:33:46,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:46,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:33:46,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:46,130 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 5 states. [2020-11-28 07:33:46,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:46,256 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2020-11-28 07:33:46,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:33:46,257 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 07:33:46,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:46,257 INFO L225 Difference]: With dead ends: 74 [2020-11-28 07:33:46,258 INFO L226 Difference]: Without dead ends: 72 [2020-11-28 07:33:46,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:33:46,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-28 07:33:46,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 51. [2020-11-28 07:33:46,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-28 07:33:46,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2020-11-28 07:33:46,262 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 13 [2020-11-28 07:33:46,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:46,263 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2020-11-28 07:33:46,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:33:46,263 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2020-11-28 07:33:46,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:33:46,263 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:46,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:46,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 07:33:46,264 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:46,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:46,264 INFO L82 PathProgramCache]: Analyzing trace with hash 867493486, now seen corresponding path program 1 times [2020-11-28 07:33:46,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:46,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735964699] [2020-11-28 07:33:46,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:46,393 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 07:33:46,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735964699] [2020-11-28 07:33:46,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:46,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:33:46,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415406669] [2020-11-28 07:33:46,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:33:46,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:46,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:33:46,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:33:46,396 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 6 states. [2020-11-28 07:33:46,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:46,540 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2020-11-28 07:33:46,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:33:46,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-28 07:33:46,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:46,542 INFO L225 Difference]: With dead ends: 85 [2020-11-28 07:33:46,543 INFO L226 Difference]: Without dead ends: 83 [2020-11-28 07:33:46,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:33:46,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-28 07:33:46,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 57. [2020-11-28 07:33:46,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-28 07:33:46,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-11-28 07:33:46,548 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 13 [2020-11-28 07:33:46,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:46,548 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-11-28 07:33:46,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:33:46,549 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-11-28 07:33:46,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:33:46,557 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:46,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:46,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 07:33:46,558 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:46,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:46,560 INFO L82 PathProgramCache]: Analyzing trace with hash 932386226, now seen corresponding path program 1 times [2020-11-28 07:33:46,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:46,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763196934] [2020-11-28 07:33:46,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:46,692 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 07:33:46,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763196934] [2020-11-28 07:33:46,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:46,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:33:46,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284639015] [2020-11-28 07:33:46,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:33:46,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:46,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:33:46,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:33:46,694 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 6 states. [2020-11-28 07:33:46,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:46,838 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2020-11-28 07:33:46,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:33:46,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-28 07:33:46,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:46,839 INFO L225 Difference]: With dead ends: 69 [2020-11-28 07:33:46,839 INFO L226 Difference]: Without dead ends: 65 [2020-11-28 07:33:46,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:33:46,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-28 07:33:46,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2020-11-28 07:33:46,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-28 07:33:46,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-11-28 07:33:46,844 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 13 [2020-11-28 07:33:46,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:46,844 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-11-28 07:33:46,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:33:46,844 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-11-28 07:33:46,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:33:46,848 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:46,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:46,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-28 07:33:46,848 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:46,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:46,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1181728866, now seen corresponding path program 1 times [2020-11-28 07:33:46,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:46,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349079709] [2020-11-28 07:33:46,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:46,987 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 07:33:46,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349079709] [2020-11-28 07:33:46,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:46,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:33:46,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35420509] [2020-11-28 07:33:46,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:33:46,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:46,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:33:46,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:33:46,988 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 6 states. [2020-11-28 07:33:47,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:47,178 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2020-11-28 07:33:47,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:33:47,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 07:33:47,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:47,179 INFO L225 Difference]: With dead ends: 86 [2020-11-28 07:33:47,179 INFO L226 Difference]: Without dead ends: 84 [2020-11-28 07:33:47,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:33:47,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-28 07:33:47,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 61. [2020-11-28 07:33:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-28 07:33:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-11-28 07:33:47,186 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 14 [2020-11-28 07:33:47,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:47,186 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-11-28 07:33:47,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:33:47,187 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-11-28 07:33:47,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 07:33:47,188 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:47,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:47,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-28 07:33:47,189 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:47,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:47,189 INFO L82 PathProgramCache]: Analyzing trace with hash 437773777, now seen corresponding path program 1 times [2020-11-28 07:33:47,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:47,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214350322] [2020-11-28 07:33:47,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:47,226 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 07:33:47,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214350322] [2020-11-28 07:33:47,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:47,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:33:47,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348241023] [2020-11-28 07:33:47,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:33:47,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:47,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:33:47,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:33:47,228 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 4 states. [2020-11-28 07:33:47,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:47,275 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2020-11-28 07:33:47,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:33:47,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-28 07:33:47,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:47,277 INFO L225 Difference]: With dead ends: 61 [2020-11-28 07:33:47,277 INFO L226 Difference]: Without dead ends: 59 [2020-11-28 07:33:47,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:47,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-28 07:33:47,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-11-28 07:33:47,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-28 07:33:47,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-11-28 07:33:47,282 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 15 [2020-11-28 07:33:47,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:47,283 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-11-28 07:33:47,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:33:47,283 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-11-28 07:33:47,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 07:33:47,283 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:47,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:47,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-28 07:33:47,284 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:47,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:47,284 INFO L82 PathProgramCache]: Analyzing trace with hash 686091308, now seen corresponding path program 1 times [2020-11-28 07:33:47,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:47,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348505173] [2020-11-28 07:33:47,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:47,323 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 07:33:47,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348505173] [2020-11-28 07:33:47,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:47,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:33:47,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364261307] [2020-11-28 07:33:47,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:33:47,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:47,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:33:47,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:33:47,325 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 4 states. [2020-11-28 07:33:47,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:47,392 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2020-11-28 07:33:47,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:33:47,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-28 07:33:47,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:47,393 INFO L225 Difference]: With dead ends: 59 [2020-11-28 07:33:47,394 INFO L226 Difference]: Without dead ends: 55 [2020-11-28 07:33:47,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:47,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-28 07:33:47,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-28 07:33:47,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-28 07:33:47,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-11-28 07:33:47,401 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 16 [2020-11-28 07:33:47,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:47,403 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-11-28 07:33:47,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:33:47,403 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-11-28 07:33:47,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:33:47,403 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:47,404 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:47,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-28 07:33:47,404 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:47,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:47,405 INFO L82 PathProgramCache]: Analyzing trace with hash 2127759202, now seen corresponding path program 1 times [2020-11-28 07:33:47,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:47,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681712504] [2020-11-28 07:33:47,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:47,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:47,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681712504] [2020-11-28 07:33:47,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552739756] [2020-11-28 07:33:47,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc90f8c4-fa16-4361-9089-bee9ebb85d1f/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 07:33:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:47,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:33:47,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:33:48,055 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:33:48,060 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 07:33:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:48,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:33:48,096 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:33:48,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:33:48,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1249425998] [2020-11-28 07:33:48,160 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2020-11-28 07:33:48,160 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:33:48,167 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:33:48,173 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:33:48,173 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:33:48,695 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:33:49,159 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2020-11-28 07:33:49,361 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-11-28 07:33:49,751 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-11-28 07:33:50,052 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-11-28 07:33:50,299 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-11-28 07:33:50,606 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2020-11-28 07:33:51,291 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2020-11-28 07:33:51,523 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2020-11-28 07:33:51,780 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2020-11-28 07:33:52,111 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-11-28 07:33:52,432 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2020-11-28 07:33:52,734 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2020-11-28 07:33:53,044 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2020-11-28 07:33:53,047 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:33:53,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:33:53,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 13 [2020-11-28 07:33:53,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257926996] [2020-11-28 07:33:53,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 07:33:53,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:53,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 07:33:53,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2020-11-28 07:33:53,049 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 13 states. [2020-11-28 07:33:53,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:53,391 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2020-11-28 07:33:53,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-28 07:33:53,391 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2020-11-28 07:33:53,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:53,392 INFO L225 Difference]: With dead ends: 120 [2020-11-28 07:33:53,393 INFO L226 Difference]: Without dead ends: 118 [2020-11-28 07:33:53,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2020-11-28 07:33:53,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-11-28 07:33:53,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 51. [2020-11-28 07:33:53,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-28 07:33:53,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2020-11-28 07:33:53,398 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 17 [2020-11-28 07:33:53,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:53,399 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2020-11-28 07:33:53,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 07:33:53,399 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2020-11-28 07:33:53,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:33:53,399 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:53,399 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:53,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:33:53,617 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:53,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:53,618 INFO L82 PathProgramCache]: Analyzing trace with hash 2128374882, now seen corresponding path program 1 times [2020-11-28 07:33:53,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:53,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662956226] [2020-11-28 07:33:53,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:53,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:53,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662956226] [2020-11-28 07:33:53,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727001485] [2020-11-28 07:33:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc90f8c4-fa16-4361-9089-bee9ebb85d1f/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 07:33:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:53,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:33:53,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:33:53,894 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:53,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:33:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:33:53,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2094967651] [2020-11-28 07:33:53,962 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2020-11-28 07:33:53,963 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:33:53,963 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:33:53,963 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:33:53,963 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:33:54,322 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:33:54,669 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2020-11-28 07:33:54,827 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-11-28 07:33:55,025 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-11-28 07:33:55,251 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-11-28 07:33:55,459 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-11-28 07:33:55,709 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2020-11-28 07:33:56,247 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2020-11-28 07:33:56,483 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-11-28 07:33:56,700 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2020-11-28 07:33:56,954 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2020-11-28 07:33:57,285 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-11-28 07:33:57,287 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:33:57,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:33:57,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 13 [2020-11-28 07:33:57,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199073482] [2020-11-28 07:33:57,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 07:33:57,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:57,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 07:33:57,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2020-11-28 07:33:57,289 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 13 states. [2020-11-28 07:33:57,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:57,601 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2020-11-28 07:33:57,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-28 07:33:57,602 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2020-11-28 07:33:57,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:57,602 INFO L225 Difference]: With dead ends: 99 [2020-11-28 07:33:57,602 INFO L226 Difference]: Without dead ends: 97 [2020-11-28 07:33:57,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2020-11-28 07:33:57,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-28 07:33:57,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 44. [2020-11-28 07:33:57,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-28 07:33:57,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-11-28 07:33:57,606 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 17 [2020-11-28 07:33:57,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:57,606 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-11-28 07:33:57,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 07:33:57,606 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-11-28 07:33:57,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:33:57,606 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:57,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:57,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-11-28 07:33:57,807 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:57,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:57,807 INFO L82 PathProgramCache]: Analyzing trace with hash -187129202, now seen corresponding path program 1 times [2020-11-28 07:33:57,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:57,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813069171] [2020-11-28 07:33:57,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:57,873 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 07:33:57,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813069171] [2020-11-28 07:33:57,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:57,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:33:57,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774374813] [2020-11-28 07:33:57,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:33:57,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:57,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:33:57,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:33:57,875 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 6 states. [2020-11-28 07:33:57,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:57,985 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-11-28 07:33:57,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:33:57,986 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-28 07:33:57,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:57,986 INFO L225 Difference]: With dead ends: 59 [2020-11-28 07:33:57,986 INFO L226 Difference]: Without dead ends: 57 [2020-11-28 07:33:57,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:33:57,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-28 07:33:57,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2020-11-28 07:33:57,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-28 07:33:57,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-11-28 07:33:57,990 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 17 [2020-11-28 07:33:57,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:57,991 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-11-28 07:33:57,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:33:57,991 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-11-28 07:33:57,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:33:57,991 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:57,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:57,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-11-28 07:33:57,992 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:57,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:57,992 INFO L82 PathProgramCache]: Analyzing trace with hash 548809757, now seen corresponding path program 1 times [2020-11-28 07:33:57,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:57,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898828026] [2020-11-28 07:33:57,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:58,083 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 07:33:58,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898828026] [2020-11-28 07:33:58,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:58,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 07:33:58,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008458928] [2020-11-28 07:33:58,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:33:58,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:58,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:33:58,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:33:58,084 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 7 states. [2020-11-28 07:33:58,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:58,184 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-11-28 07:33:58,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:33:58,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-11-28 07:33:58,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:58,187 INFO L225 Difference]: With dead ends: 51 [2020-11-28 07:33:58,187 INFO L226 Difference]: Without dead ends: 49 [2020-11-28 07:33:58,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:33:58,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-28 07:33:58,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2020-11-28 07:33:58,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-28 07:33:58,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-11-28 07:33:58,191 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 18 [2020-11-28 07:33:58,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:58,191 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-11-28 07:33:58,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:33:58,192 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-11-28 07:33:58,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:33:58,192 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:58,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:58,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-11-28 07:33:58,192 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:58,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:58,193 INFO L82 PathProgramCache]: Analyzing trace with hash 613702497, now seen corresponding path program 1 times [2020-11-28 07:33:58,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:58,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442996469] [2020-11-28 07:33:58,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:58,267 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 07:33:58,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442996469] [2020-11-28 07:33:58,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:58,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 07:33:58,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194224955] [2020-11-28 07:33:58,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:33:58,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:58,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:33:58,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:33:58,268 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 7 states. [2020-11-28 07:33:58,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:58,328 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-11-28 07:33:58,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:33:58,328 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-11-28 07:33:58,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:58,328 INFO L225 Difference]: With dead ends: 34 [2020-11-28 07:33:58,328 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:33:58,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:33:58,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:33:58,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:33:58,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:33:58,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:33:58,329 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-28 07:33:58,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:58,329 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:33:58,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:33:58,330 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:33:58,330 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:33:58,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-11-28 07:33:58,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:33:58,827 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 24 [2020-11-28 07:33:59,310 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 33 [2020-11-28 07:33:59,312 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,312 INFO L274 CegarLoopResult]: For program point L234(lines 234 242) no Hoare annotation was computed. [2020-11-28 07:33:59,312 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,312 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:33:59,312 INFO L274 CegarLoopResult]: For program point L152(lines 152 160) no Hoare annotation was computed. [2020-11-28 07:33:59,312 INFO L274 CegarLoopResult]: For program point L20(lines 20 401) no Hoare annotation was computed. [2020-11-28 07:33:59,313 INFO L277 CegarLoopResult]: At program point L400(lines 15 402) the Hoare annotation is: true [2020-11-28 07:33:59,313 INFO L274 CegarLoopResult]: For program point L70(lines 70 94) no Hoare annotation was computed. [2020-11-28 07:33:59,313 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,313 INFO L274 CegarLoopResult]: For program point L4-2(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,313 INFO L274 CegarLoopResult]: For program point L4-4(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,313 INFO L270 CegarLoopResult]: At program point L384(lines 282 391) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~main__t~0 0))) (let ((.cse0 (let ((.cse2 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)))) (or (and .cse2 .cse1) (and .cse2 (<= 1 ULTIMATE.start_main_~main__t~0)))))) (or (and .cse0 (< 0 ULTIMATE.start_main_~main__tagbuf_len~0) .cse1) (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~19) .cse0 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~18 0)))))) [2020-11-28 07:33:59,313 INFO L270 CegarLoopResult]: At program point L351(lines 32 395) the Hoare annotation is: (or (and (< 0 ULTIMATE.start_main_~main__tagbuf_len~0) (= ULTIMATE.start_main_~main__t~0 0)) (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (let ((.cse2 (<= ULTIMATE.start_main_~main__t~0 1))) (let ((.cse0 (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~17)) (.cse1 (let ((.cse3 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0))) (.cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~16 0))) (.cse5 (<= 1 ULTIMATE.start_main_~main__t~0))) (or (and .cse3 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~19 0)) .cse4 .cse5) (and .cse3 .cse4 .cse5 .cse2))))) (or (and (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~19) .cse0 .cse1) (and .cse2 .cse0 .cse1)))))) [2020-11-28 07:33:59,313 INFO L274 CegarLoopResult]: For program point L4-6(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,314 INFO L274 CegarLoopResult]: For program point L4-8(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,314 INFO L274 CegarLoopResult]: For program point L4-10(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,314 INFO L274 CegarLoopResult]: For program point L186(lines 186 196) no Hoare annotation was computed. [2020-11-28 07:33:59,314 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,314 INFO L274 CegarLoopResult]: For program point L4-12(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,314 INFO L274 CegarLoopResult]: For program point L4-14(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,314 INFO L274 CegarLoopResult]: For program point L4-16(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,314 INFO L274 CegarLoopResult]: For program point L4-18(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,314 INFO L274 CegarLoopResult]: For program point L4-20(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,314 INFO L274 CegarLoopResult]: For program point L4-22(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,314 INFO L274 CegarLoopResult]: For program point L4-24(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,314 INFO L274 CegarLoopResult]: For program point L4-26(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,314 INFO L274 CegarLoopResult]: For program point L4-28(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,315 INFO L274 CegarLoopResult]: For program point L4-30(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,315 INFO L274 CegarLoopResult]: For program point L4-32(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,315 INFO L274 CegarLoopResult]: For program point L4-34(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,315 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,315 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,315 INFO L274 CegarLoopResult]: For program point L105(lines 105 209) no Hoare annotation was computed. [2020-11-28 07:33:59,315 INFO L274 CegarLoopResult]: For program point L39(lines 39 255) no Hoare annotation was computed. [2020-11-28 07:33:59,315 INFO L274 CegarLoopResult]: For program point L288(lines 288 390) no Hoare annotation was computed. [2020-11-28 07:33:59,315 INFO L274 CegarLoopResult]: For program point L222(lines 222 244) no Hoare annotation was computed. [2020-11-28 07:33:59,315 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,315 INFO L274 CegarLoopResult]: For program point L24(lines 24 396) no Hoare annotation was computed. [2020-11-28 07:33:59,315 INFO L274 CegarLoopResult]: For program point L140(lines 140 162) no Hoare annotation was computed. [2020-11-28 07:33:59,315 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:33:59,316 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,316 INFO L274 CegarLoopResult]: For program point L124(lines 124 201) no Hoare annotation was computed. [2020-11-28 07:33:59,316 INFO L274 CegarLoopResult]: For program point L174(lines 174 198) no Hoare annotation was computed. [2020-11-28 07:33:59,316 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,316 INFO L274 CegarLoopResult]: For program point L307(lines 307 315) no Hoare annotation was computed. [2020-11-28 07:33:59,316 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,316 INFO L274 CegarLoopResult]: For program point L324(lines 324 389) no Hoare annotation was computed. [2020-11-28 07:33:59,316 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,316 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,316 INFO L274 CegarLoopResult]: For program point L276(lines 276 391) no Hoare annotation was computed. [2020-11-28 07:33:59,316 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,316 INFO L274 CegarLoopResult]: For program point L376(lines 376 385) no Hoare annotation was computed. [2020-11-28 07:33:59,316 INFO L274 CegarLoopResult]: For program point L343(lines 343 352) no Hoare annotation was computed. [2020-11-28 07:33:59,317 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,317 INFO L274 CegarLoopResult]: For program point L112(lines 112 203) no Hoare annotation was computed. [2020-11-28 07:33:59,317 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,317 INFO L270 CegarLoopResult]: At program point L195(lines 56 253) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~main__t~0) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) [2020-11-28 07:33:59,317 INFO L274 CegarLoopResult]: For program point L295(lines 295 317) no Hoare annotation was computed. [2020-11-28 07:33:59,317 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,317 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,317 INFO L274 CegarLoopResult]: For program point L32(lines 32 395) no Hoare annotation was computed. [2020-11-28 07:33:59,317 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,317 INFO L274 CegarLoopResult]: For program point L82(lines 82 92) no Hoare annotation was computed. [2020-11-28 07:33:59,317 INFO L277 CegarLoopResult]: At program point L314(lines 32 395) the Hoare annotation is: true [2020-11-28 07:33:59,317 INFO L274 CegarLoopResult]: For program point L215(lines 215 250) no Hoare annotation was computed. [2020-11-28 07:33:59,318 INFO L274 CegarLoopResult]: For program point L50(lines 50 253) no Hoare annotation was computed. [2020-11-28 07:33:59,318 INFO L274 CegarLoopResult]: For program point L364(lines 364 387) no Hoare annotation was computed. [2020-11-28 07:33:59,318 INFO L274 CegarLoopResult]: For program point L331(lines 331 354) no Hoare annotation was computed. [2020-11-28 07:33:59,318 INFO L274 CegarLoopResult]: For program point L265(lines 265 393) no Hoare annotation was computed. [2020-11-28 07:33:59,318 INFO L274 CegarLoopResult]: For program point L133(lines 133 200) no Hoare annotation was computed. [2020-11-28 07:33:59,318 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:33:59,318 INFO L270 CegarLoopResult]: At program point L249(lines 101 251) the Hoare annotation is: (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (<= 1 ULTIMATE.start_main_~main__t~0)) [2020-11-28 07:33:59,318 INFO L274 CegarLoopResult]: For program point L101(lines 101 251) no Hoare annotation was computed. [2020-11-28 07:33:59,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:33:59 BoogieIcfgContainer [2020-11-28 07:33:59,336 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:33:59,337 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:33:59,337 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:33:59,337 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:33:59,338 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:33:42" (3/4) ... [2020-11-28 07:33:59,340 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:33:59,353 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 07:33:59,355 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:33:59,356 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:33:59,356 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:33:59,431 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fc90f8c4-fa16-4361-9089-bee9ebb85d1f/bin/utaipan/witness.graphml [2020-11-28 07:33:59,432 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:33:59,433 INFO L168 Benchmark]: Toolchain (without parser) took 18268.69 ms. Allocated memory was 98.6 MB in the beginning and 302.0 MB in the end (delta: 203.4 MB). Free memory was 72.3 MB in the beginning and 236.4 MB in the end (delta: -164.1 MB). Peak memory consumption was 38.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:59,433 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:33:59,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 440.63 ms. Allocated memory is still 98.6 MB. Free memory was 72.1 MB in the beginning and 73.4 MB in the end (delta: -1.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:59,434 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.78 ms. Allocated memory is still 98.6 MB. Free memory was 73.3 MB in the beginning and 71.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:59,434 INFO L168 Benchmark]: Boogie Preprocessor took 57.28 ms. Allocated memory is still 98.6 MB. Free memory was 71.2 MB in the beginning and 69.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:59,435 INFO L168 Benchmark]: RCFGBuilder took 816.00 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 69.7 MB in the beginning and 113.0 MB in the end (delta: -43.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:59,435 INFO L168 Benchmark]: TraceAbstraction took 16765.71 ms. Allocated memory was 144.7 MB in the beginning and 302.0 MB in the end (delta: 157.3 MB). Free memory was 112.5 MB in the beginning and 242.7 MB in the end (delta: -130.1 MB). Peak memory consumption was 171.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:59,436 INFO L168 Benchmark]: Witness Printer took 94.92 ms. Allocated memory is still 302.0 MB. Free memory was 242.7 MB in the beginning and 236.4 MB in the end (delta: 6.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:59,438 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 440.63 ms. Allocated memory is still 98.6 MB. Free memory was 72.1 MB in the beginning and 73.4 MB in the end (delta: -1.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.78 ms. Allocated memory is still 98.6 MB. Free memory was 73.3 MB in the beginning and 71.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.28 ms. Allocated memory is still 98.6 MB. Free memory was 71.2 MB in the beginning and 69.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 816.00 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 69.7 MB in the beginning and 113.0 MB in the end (delta: -43.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 16765.71 ms. Allocated memory was 144.7 MB in the beginning and 302.0 MB in the end (delta: 157.3 MB). Free memory was 112.5 MB in the beginning and 242.7 MB in the end (delta: -130.1 MB). Peak memory consumption was 171.9 MB. Max. memory is 16.1 GB. * Witness Printer took 94.92 ms. Allocated memory is still 302.0 MB. Free memory was 242.7 MB in the beginning and 236.4 MB in the end (delta: 6.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 282]: Loop Invariant Derived loop invariant: ((((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && 0 < main__tagbuf_len) && main__t == 0) || (((main__t < main__tagbuf_len && 1 <= __VERIFIER_assert__cond) && ((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t))) && !(__VERIFIER_assert__cond == 0)) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 1 <= main__t && main__t <= main__tagbuf_len - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: main__t < main__tagbuf_len && 1 <= main__t - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (0 < main__tagbuf_len && main__t == 0) || (main__t < main__tagbuf_len && (((1 <= __VERIFIER_assert__cond && 1 <= __VERIFIER_assert__cond) && ((((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 1 <= main__t) || (((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && 1 <= main__t) && main__t <= 1))) || ((main__t <= 1 && 1 <= __VERIFIER_assert__cond) && ((((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 1 <= main__t) || (((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && 1 <= main__t) && main__t <= 1))))) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 73 locations, 18 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.7s, OverallIterations: 23, TraceHistogramMax: 2, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 998 SDtfs, 1801 SDslu, 1587 SDs, 0 SdLazy, 1950 SolverSat, 219 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 259 GetRequests, 100 SyntacticMatches, 10 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 23 MinimizatonAttempts, 528 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 12 NumberOfFragments, 160 HoareAnnotationTreeSize, 6 FomulaSimplifications, 19039930 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 6 FomulaSimplificationsInter, 5050613 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 331 NumberOfCodeBlocks, 331 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 338 ConstructedInterpolants, 0 QuantifiedInterpolants, 18116 SizeOfPredicates, 10 NumberOfNonLiveVariables, 229 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 27 InterpolantComputations, 21 PerfectInterpolantSequences, 8/24 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...