./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_f3c3a42e-2c76-4eb3-bd36-7ad699fa7e23/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f3c3a42e-2c76-4eb3-bd36-7ad699fa7e23/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f3c3a42e-2c76-4eb3-bd36-7ad699fa7e23/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f3c3a42e-2c76-4eb3-bd36-7ad699fa7e23/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_f3c3a42e-2c76-4eb3-bd36-7ad699fa7e23/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f3c3a42e-2c76-4eb3-bd36-7ad699fa7e23/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 [2020-11-30 01:49:26,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:49:26,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:49:26,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:49:26,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:49:26,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:49:26,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:49:26,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:49:26,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:49:26,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:49:26,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:49:26,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:49:26,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:49:26,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:49:26,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:49:26,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:49:26,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:49:26,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:49:26,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:49:26,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:49:26,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:49:26,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:49:26,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:49:26,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:49:26,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:49:26,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:49:26,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:49:26,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:49:26,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:49:26,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:49:26,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:49:26,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:49:26,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:49:26,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:49:26,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:49:26,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:49:26,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:49:26,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:49:26,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:49:26,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:49:26,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:49:26,328 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f3c3a42e-2c76-4eb3-bd36-7ad699fa7e23/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 01:49:26,376 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:49:26,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:49:26,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:49:26,378 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:49:26,378 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:49:26,378 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:49:26,379 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:49:26,379 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:49:26,379 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:49:26,379 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:49:26,380 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:49:26,381 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:49:26,381 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:49:26,381 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:49:26,381 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:49:26,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:49:26,382 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:49:26,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:49:26,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:49:26,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:49:26,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:49:26,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:49:26,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:49:26,384 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:49:26,384 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:49:26,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:49:26,385 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:49:26,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:49:26,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:49:26,387 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:49:26,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:49:26,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:49:26,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:49:26,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:49:26,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:49:26,388 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:49:26,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:49:26,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:49:26,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:49:26,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:49:26,389 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_f3c3a42e-2c76-4eb3-bd36-7ad699fa7e23/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f3c3a42e-2c76-4eb3-bd36-7ad699fa7e23/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b57e964dbb610d8a39ef60225ec1dbb75ce4568 [2020-11-30 01:49:26,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:49:26,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:49:26,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:49:26,714 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:49:26,718 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:49:26,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f3c3a42e-2c76-4eb3-bd36-7ad699fa7e23/bin/utaipan/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2020-11-30 01:49:26,816 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f3c3a42e-2c76-4eb3-bd36-7ad699fa7e23/bin/utaipan/data/af84a46b9/e615024150354d4890c7396b68ec77ee/FLAG3e0bb0053 [2020-11-30 01:49:27,397 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:49:27,398 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f3c3a42e-2c76-4eb3-bd36-7ad699fa7e23/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2020-11-30 01:49:27,406 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f3c3a42e-2c76-4eb3-bd36-7ad699fa7e23/bin/utaipan/data/af84a46b9/e615024150354d4890c7396b68ec77ee/FLAG3e0bb0053 [2020-11-30 01:49:27,734 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f3c3a42e-2c76-4eb3-bd36-7ad699fa7e23/bin/utaipan/data/af84a46b9/e615024150354d4890c7396b68ec77ee [2020-11-30 01:49:27,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:49:27,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:49:27,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:49:27,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:49:27,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:49:27,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:49:27" (1/1) ... [2020-11-30 01:49:27,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45108d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:27, skipping insertion in model container [2020-11-30 01:49:27,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:49:27" (1/1) ... [2020-11-30 01:49:27,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:49:27,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:49:28,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:49:28,032 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:49:28,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:49:28,087 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:49:28,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:28 WrapperNode [2020-11-30 01:49:28,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:49:28,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:49:28,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:49:28,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:49:28,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:28" (1/1) ... [2020-11-30 01:49:28,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:28" (1/1) ... [2020-11-30 01:49:28,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:49:28,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:49:28,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:49:28,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:49:28,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:28" (1/1) ... [2020-11-30 01:49:28,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:28" (1/1) ... [2020-11-30 01:49:28,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:28" (1/1) ... [2020-11-30 01:49:28,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:28" (1/1) ... [2020-11-30 01:49:28,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:28" (1/1) ... [2020-11-30 01:49:28,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:28" (1/1) ... [2020-11-30 01:49:28,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:28" (1/1) ... [2020-11-30 01:49:28,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:49:28,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:49:28,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:49:28,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:49:28,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3c3a42e-2c76-4eb3-bd36-7ad699fa7e23/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 [2020-11-30 01:49:28,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:49:28,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:49:28,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:49:28,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:49:28,949 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:49:28,950 INFO L298 CfgBuilder]: Removed 40 assume(true) statements. [2020-11-30 01:49:28,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:49:28 BoogieIcfgContainer [2020-11-30 01:49:28,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:49:28,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:49:28,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:49:28,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:49:28,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:49:27" (1/3) ... [2020-11-30 01:49:28,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f19975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:49:28, skipping insertion in model container [2020-11-30 01:49:28,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:28" (2/3) ... [2020-11-30 01:49:28,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f19975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:49:28, skipping insertion in model container [2020-11-30 01:49:28,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:49:28" (3/3) ... [2020-11-30 01:49:28,960 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+lhb-reducer.c [2020-11-30 01:49:28,972 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:49:28,977 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2020-11-30 01:49:28,989 INFO L253 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-11-30 01:49:29,014 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:49:29,015 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:49:29,015 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:49:29,015 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:49:29,015 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:49:29,015 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:49:29,015 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:49:29,016 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:49:29,033 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-11-30 01:49:29,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:49:29,038 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:29,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:29,039 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]=== [2020-11-30 01:49:29,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:29,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1182418176, now seen corresponding path program 1 times [2020-11-30 01:49:29,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:29,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375589387] [2020-11-30 01:49:29,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:29,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:29,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375589387] [2020-11-30 01:49:29,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:29,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:49:29,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217157286] [2020-11-30 01:49:29,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:49:29,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:29,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:49:29,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:49:29,296 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-11-30 01:49:29,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:29,466 INFO L93 Difference]: Finished difference Result 118 states and 159 transitions. [2020-11-30 01:49:29,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:49:29,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 01:49:29,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:29,482 INFO L225 Difference]: With dead ends: 118 [2020-11-30 01:49:29,482 INFO L226 Difference]: Without dead ends: 106 [2020-11-30 01:49:29,495 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 [2020-11-30 01:49:29,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-30 01:49:29,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 68. [2020-11-30 01:49:29,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-30 01:49:29,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-11-30 01:49:29,534 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 7 [2020-11-30 01:49:29,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:29,534 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-11-30 01:49:29,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:49:29,535 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-11-30 01:49:29,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:49:29,535 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:29,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:29,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:49:29,536 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]=== [2020-11-30 01:49:29,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:29,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1178169984, now seen corresponding path program 1 times [2020-11-30 01:49:29,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:29,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065368122] [2020-11-30 01:49:29,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:29,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065368122] [2020-11-30 01:49:29,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:29,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:49:29,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566636518] [2020-11-30 01:49:29,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:49:29,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:29,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:49:29,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:49:29,647 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 4 states. [2020-11-30 01:49:29,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:29,741 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2020-11-30 01:49:29,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:49:29,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 01:49:29,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:29,745 INFO L225 Difference]: With dead ends: 106 [2020-11-30 01:49:29,747 INFO L226 Difference]: Without dead ends: 104 [2020-11-30 01:49:29,748 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 [2020-11-30 01:49:29,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-30 01:49:29,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 66. [2020-11-30 01:49:29,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-30 01:49:29,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-11-30 01:49:29,768 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 7 [2020-11-30 01:49:29,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:29,768 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-11-30 01:49:29,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:49:29,769 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-11-30 01:49:29,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 01:49:29,769 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:29,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:29,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:49:29,770 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]=== [2020-11-30 01:49:29,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:29,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1895962006, now seen corresponding path program 1 times [2020-11-30 01:49:29,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:29,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286014088] [2020-11-30 01:49:29,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:29,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286014088] [2020-11-30 01:49:29,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:29,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:49:29,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73434469] [2020-11-30 01:49:29,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:49:29,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:29,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:49:29,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:49:29,864 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 5 states. [2020-11-30 01:49:30,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:30,012 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-11-30 01:49:30,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:49:30,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-30 01:49:30,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:30,014 INFO L225 Difference]: With dead ends: 68 [2020-11-30 01:49:30,014 INFO L226 Difference]: Without dead ends: 66 [2020-11-30 01:49:30,015 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 [2020-11-30 01:49:30,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-30 01:49:30,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-11-30 01:49:30,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-30 01:49:30,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-11-30 01:49:30,023 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 10 [2020-11-30 01:49:30,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:30,023 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-11-30 01:49:30,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:49:30,024 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-11-30 01:49:30,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 01:49:30,024 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:30,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:30,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:49:30,025 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]=== [2020-11-30 01:49:30,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:30,026 INFO L82 PathProgramCache]: Analyzing trace with hash 395032961, now seen corresponding path program 1 times [2020-11-30 01:49:30,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:30,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458298943] [2020-11-30 01:49:30,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:30,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:30,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458298943] [2020-11-30 01:49:30,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:30,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:49:30,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146292734] [2020-11-30 01:49:30,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:49:30,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:30,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:49:30,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:49:30,091 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2020-11-30 01:49:30,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:30,251 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-11-30 01:49:30,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:49:30,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-30 01:49:30,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:30,252 INFO L225 Difference]: With dead ends: 66 [2020-11-30 01:49:30,252 INFO L226 Difference]: Without dead ends: 64 [2020-11-30 01:49:30,253 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 [2020-11-30 01:49:30,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-30 01:49:30,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-11-30 01:49:30,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-30 01:49:30,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-11-30 01:49:30,261 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 10 [2020-11-30 01:49:30,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:30,262 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-11-30 01:49:30,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:49:30,262 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-11-30 01:49:30,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 01:49:30,263 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:30,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:30,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 01:49:30,264 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]=== [2020-11-30 01:49:30,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:30,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1354726155, now seen corresponding path program 1 times [2020-11-30 01:49:30,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:30,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380525209] [2020-11-30 01:49:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:30,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380525209] [2020-11-30 01:49:30,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:30,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:49:30,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934381067] [2020-11-30 01:49:30,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:49:30,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:30,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:49:30,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:49:30,344 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 4 states. [2020-11-30 01:49:30,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:30,420 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-11-30 01:49:30,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:49:30,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-30 01:49:30,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:30,422 INFO L225 Difference]: With dead ends: 64 [2020-11-30 01:49:30,422 INFO L226 Difference]: Without dead ends: 60 [2020-11-30 01:49:30,422 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 [2020-11-30 01:49:30,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-30 01:49:30,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-11-30 01:49:30,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-30 01:49:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-11-30 01:49:30,429 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 11 [2020-11-30 01:49:30,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:30,429 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-11-30 01:49:30,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:49:30,429 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-11-30 01:49:30,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 01:49:30,430 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:30,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:30,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 01:49:30,431 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]=== [2020-11-30 01:49:30,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:30,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1355335877, now seen corresponding path program 1 times [2020-11-30 01:49:30,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:30,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864284803] [2020-11-30 01:49:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:30,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864284803] [2020-11-30 01:49:30,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:30,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:49:30,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253234517] [2020-11-30 01:49:30,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:49:30,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:30,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:49:30,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:49:30,487 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 5 states. [2020-11-30 01:49:30,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:30,672 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2020-11-30 01:49:30,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:49:30,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-30 01:49:30,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:30,676 INFO L225 Difference]: With dead ends: 94 [2020-11-30 01:49:30,676 INFO L226 Difference]: Without dead ends: 92 [2020-11-30 01:49:30,676 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 [2020-11-30 01:49:30,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-30 01:49:30,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2020-11-30 01:49:30,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-30 01:49:30,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-11-30 01:49:30,686 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 11 [2020-11-30 01:49:30,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:30,686 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-11-30 01:49:30,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:49:30,687 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-11-30 01:49:30,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 01:49:30,687 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:30,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:30,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 01:49:30,688 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]=== [2020-11-30 01:49:30,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:30,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1355355737, now seen corresponding path program 1 times [2020-11-30 01:49:30,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:30,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024125725] [2020-11-30 01:49:30,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:30,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:30,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024125725] [2020-11-30 01:49:30,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:30,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:49:30,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753013631] [2020-11-30 01:49:30,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:49:30,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:30,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:49:30,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:49:30,765 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 5 states. [2020-11-30 01:49:30,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:30,924 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2020-11-30 01:49:30,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:49:30,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-30 01:49:30,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:30,926 INFO L225 Difference]: With dead ends: 99 [2020-11-30 01:49:30,926 INFO L226 Difference]: Without dead ends: 97 [2020-11-30 01:49:30,927 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 [2020-11-30 01:49:30,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-30 01:49:30,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 54. [2020-11-30 01:49:30,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-30 01:49:30,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-11-30 01:49:30,933 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 11 [2020-11-30 01:49:30,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:30,934 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-11-30 01:49:30,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:49:30,934 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-11-30 01:49:30,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 01:49:30,935 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:30,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:30,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 01:49:30,935 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]=== [2020-11-30 01:49:30,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:30,936 INFO L82 PathProgramCache]: Analyzing trace with hash -638874037, now seen corresponding path program 1 times [2020-11-30 01:49:30,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:30,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167501872] [2020-11-30 01:49:30,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:30,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:30,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167501872] [2020-11-30 01:49:30,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:30,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:49:30,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074867166] [2020-11-30 01:49:30,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:49:30,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:30,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:49:30,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:49:30,977 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 4 states. [2020-11-30 01:49:31,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:31,027 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-11-30 01:49:31,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:49:31,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-30 01:49:31,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:31,029 INFO L225 Difference]: With dead ends: 56 [2020-11-30 01:49:31,029 INFO L226 Difference]: Without dead ends: 52 [2020-11-30 01:49:31,029 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 [2020-11-30 01:49:31,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-30 01:49:31,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-11-30 01:49:31,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-30 01:49:31,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-11-30 01:49:31,034 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 11 [2020-11-30 01:49:31,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:31,034 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-11-30 01:49:31,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:49:31,035 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-11-30 01:49:31,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 01:49:31,035 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:31,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:31,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 01:49:31,036 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]=== [2020-11-30 01:49:31,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:31,037 INFO L82 PathProgramCache]: Analyzing trace with hash -934254553, now seen corresponding path program 1 times [2020-11-30 01:49:31,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:31,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244060383] [2020-11-30 01:49:31,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:31,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:31,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244060383] [2020-11-30 01:49:31,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:31,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:49:31,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146400947] [2020-11-30 01:49:31,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:49:31,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:31,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:49:31,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:49:31,199 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 6 states. [2020-11-30 01:49:31,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:31,349 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2020-11-30 01:49:31,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:49:31,350 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-30 01:49:31,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:31,351 INFO L225 Difference]: With dead ends: 117 [2020-11-30 01:49:31,351 INFO L226 Difference]: Without dead ends: 115 [2020-11-30 01:49:31,352 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 [2020-11-30 01:49:31,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-11-30 01:49:31,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 55. [2020-11-30 01:49:31,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-30 01:49:31,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-11-30 01:49:31,358 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 12 [2020-11-30 01:49:31,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:31,358 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-11-30 01:49:31,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:49:31,361 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-11-30 01:49:31,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 01:49:31,365 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:31,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:31,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 01:49:31,366 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]=== [2020-11-30 01:49:31,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:31,366 INFO L82 PathProgramCache]: Analyzing trace with hash -933638873, now seen corresponding path program 1 times [2020-11-30 01:49:31,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:31,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869903872] [2020-11-30 01:49:31,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:31,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869903872] [2020-11-30 01:49:31,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:31,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:49:31,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638623792] [2020-11-30 01:49:31,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:49:31,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:31,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:49:31,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:49:31,517 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 6 states. [2020-11-30 01:49:31,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:31,668 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2020-11-30 01:49:31,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:49:31,669 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-30 01:49:31,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:31,669 INFO L225 Difference]: With dead ends: 115 [2020-11-30 01:49:31,670 INFO L226 Difference]: Without dead ends: 113 [2020-11-30 01:49:31,670 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 [2020-11-30 01:49:31,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-30 01:49:31,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 57. [2020-11-30 01:49:31,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-30 01:49:31,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2020-11-30 01:49:31,683 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 12 [2020-11-30 01:49:31,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:31,684 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2020-11-30 01:49:31,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:49:31,684 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2020-11-30 01:49:31,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 01:49:31,685 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:31,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:31,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 01:49:31,685 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]=== [2020-11-30 01:49:31,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:31,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1690551450, now seen corresponding path program 1 times [2020-11-30 01:49:31,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:31,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969258174] [2020-11-30 01:49:31,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:31,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:31,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969258174] [2020-11-30 01:49:31,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:31,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:49:31,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765997103] [2020-11-30 01:49:31,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:49:31,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:31,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:49:31,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:49:31,730 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 5 states. [2020-11-30 01:49:31,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:31,826 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-11-30 01:49:31,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:49:31,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-30 01:49:31,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:31,827 INFO L225 Difference]: With dead ends: 75 [2020-11-30 01:49:31,828 INFO L226 Difference]: Without dead ends: 73 [2020-11-30 01:49:31,828 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 [2020-11-30 01:49:31,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-30 01:49:31,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 55. [2020-11-30 01:49:31,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-30 01:49:31,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-11-30 01:49:31,833 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 12 [2020-11-30 01:49:31,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:31,833 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-11-30 01:49:31,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:49:31,833 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-11-30 01:49:31,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 01:49:31,834 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:31,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:31,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 01:49:31,841 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]=== [2020-11-30 01:49:31,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:31,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1692644762, now seen corresponding path program 1 times [2020-11-30 01:49:31,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:31,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438733942] [2020-11-30 01:49:31,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:31,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:31,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438733942] [2020-11-30 01:49:31,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:31,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:49:31,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731706212] [2020-11-30 01:49:31,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:49:31,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:31,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:49:31,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:49:31,895 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 5 states. [2020-11-30 01:49:31,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:31,975 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2020-11-30 01:49:31,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:49:31,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-30 01:49:31,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:31,976 INFO L225 Difference]: With dead ends: 56 [2020-11-30 01:49:31,976 INFO L226 Difference]: Without dead ends: 54 [2020-11-30 01:49:31,977 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 [2020-11-30 01:49:31,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-30 01:49:31,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-11-30 01:49:31,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-30 01:49:31,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-11-30 01:49:31,982 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 12 [2020-11-30 01:49:31,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:31,983 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-11-30 01:49:31,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:49:31,983 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-11-30 01:49:31,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 01:49:31,983 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:31,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:31,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-30 01:49:31,984 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]=== [2020-11-30 01:49:31,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:31,985 INFO L82 PathProgramCache]: Analyzing trace with hash 869404081, now seen corresponding path program 1 times [2020-11-30 01:49:31,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:31,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130681336] [2020-11-30 01:49:31,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:32,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:32,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130681336] [2020-11-30 01:49:32,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:32,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:49:32,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91822103] [2020-11-30 01:49:32,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:49:32,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:32,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:49:32,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:49:32,026 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 5 states. [2020-11-30 01:49:32,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:32,135 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2020-11-30 01:49:32,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:49:32,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-30 01:49:32,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:32,136 INFO L225 Difference]: With dead ends: 74 [2020-11-30 01:49:32,137 INFO L226 Difference]: Without dead ends: 72 [2020-11-30 01:49:32,137 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 [2020-11-30 01:49:32,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-30 01:49:32,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 51. [2020-11-30 01:49:32,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-30 01:49:32,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2020-11-30 01:49:32,141 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 13 [2020-11-30 01:49:32,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:32,142 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2020-11-30 01:49:32,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:49:32,142 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2020-11-30 01:49:32,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 01:49:32,149 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:32,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:32,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-30 01:49:32,150 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]=== [2020-11-30 01:49:32,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:32,151 INFO L82 PathProgramCache]: Analyzing trace with hash 867493486, now seen corresponding path program 1 times [2020-11-30 01:49:32,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:32,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156912843] [2020-11-30 01:49:32,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:32,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156912843] [2020-11-30 01:49:32,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:32,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:49:32,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525587318] [2020-11-30 01:49:32,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:49:32,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:32,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:49:32,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:49:32,279 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 6 states. [2020-11-30 01:49:32,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:32,440 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2020-11-30 01:49:32,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:49:32,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-30 01:49:32,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:32,443 INFO L225 Difference]: With dead ends: 85 [2020-11-30 01:49:32,443 INFO L226 Difference]: Without dead ends: 83 [2020-11-30 01:49:32,443 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 [2020-11-30 01:49:32,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-30 01:49:32,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 57. [2020-11-30 01:49:32,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-30 01:49:32,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-11-30 01:49:32,449 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 13 [2020-11-30 01:49:32,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:32,450 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-11-30 01:49:32,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:49:32,450 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-11-30 01:49:32,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 01:49:32,451 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:32,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:32,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-30 01:49:32,451 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]=== [2020-11-30 01:49:32,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:32,452 INFO L82 PathProgramCache]: Analyzing trace with hash 932386226, now seen corresponding path program 1 times [2020-11-30 01:49:32,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:32,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464411392] [2020-11-30 01:49:32,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:32,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464411392] [2020-11-30 01:49:32,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:32,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:49:32,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202337939] [2020-11-30 01:49:32,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:49:32,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:32,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:49:32,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:49:32,573 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 6 states. [2020-11-30 01:49:32,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:32,667 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2020-11-30 01:49:32,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:49:32,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-30 01:49:32,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:32,669 INFO L225 Difference]: With dead ends: 69 [2020-11-30 01:49:32,669 INFO L226 Difference]: Without dead ends: 65 [2020-11-30 01:49:32,669 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 [2020-11-30 01:49:32,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-30 01:49:32,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2020-11-30 01:49:32,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-30 01:49:32,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-11-30 01:49:32,674 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 13 [2020-11-30 01:49:32,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:32,674 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-11-30 01:49:32,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:49:32,675 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-11-30 01:49:32,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 01:49:32,675 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:32,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:32,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-30 01:49:32,676 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]=== [2020-11-30 01:49:32,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:32,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1181728866, now seen corresponding path program 1 times [2020-11-30 01:49:32,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:32,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15638005] [2020-11-30 01:49:32,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:32,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:32,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15638005] [2020-11-30 01:49:32,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:32,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:49:32,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784769674] [2020-11-30 01:49:32,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:49:32,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:32,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:49:32,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:49:32,792 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 6 states. [2020-11-30 01:49:32,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:32,977 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2020-11-30 01:49:32,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:49:32,978 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-30 01:49:32,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:32,979 INFO L225 Difference]: With dead ends: 86 [2020-11-30 01:49:32,979 INFO L226 Difference]: Without dead ends: 84 [2020-11-30 01:49:32,980 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 [2020-11-30 01:49:32,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-30 01:49:32,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 61. [2020-11-30 01:49:32,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-30 01:49:32,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-11-30 01:49:32,988 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 14 [2020-11-30 01:49:32,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:32,988 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-11-30 01:49:32,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:49:32,989 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-11-30 01:49:32,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:49:32,991 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:32,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:32,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-30 01:49:32,992 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]=== [2020-11-30 01:49:32,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:32,992 INFO L82 PathProgramCache]: Analyzing trace with hash 437773777, now seen corresponding path program 1 times [2020-11-30 01:49:32,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:32,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122828327] [2020-11-30 01:49:32,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:33,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122828327] [2020-11-30 01:49:33,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:33,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:49:33,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744891013] [2020-11-30 01:49:33,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:49:33,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:33,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:49:33,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:49:33,034 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 4 states. [2020-11-30 01:49:33,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:33,080 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2020-11-30 01:49:33,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:49:33,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-30 01:49:33,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:33,082 INFO L225 Difference]: With dead ends: 61 [2020-11-30 01:49:33,082 INFO L226 Difference]: Without dead ends: 59 [2020-11-30 01:49:33,083 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 [2020-11-30 01:49:33,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-30 01:49:33,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-11-30 01:49:33,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-30 01:49:33,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-11-30 01:49:33,088 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 15 [2020-11-30 01:49:33,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:33,088 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-11-30 01:49:33,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:49:33,088 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-11-30 01:49:33,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 01:49:33,088 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:33,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:33,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-30 01:49:33,089 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]=== [2020-11-30 01:49:33,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:33,089 INFO L82 PathProgramCache]: Analyzing trace with hash 686091308, now seen corresponding path program 1 times [2020-11-30 01:49:33,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:33,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83322197] [2020-11-30 01:49:33,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:33,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:33,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83322197] [2020-11-30 01:49:33,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:33,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:49:33,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490345989] [2020-11-30 01:49:33,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:49:33,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:33,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:49:33,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:49:33,135 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 4 states. [2020-11-30 01:49:33,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:33,193 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2020-11-30 01:49:33,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:49:33,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-30 01:49:33,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:33,194 INFO L225 Difference]: With dead ends: 59 [2020-11-30 01:49:33,194 INFO L226 Difference]: Without dead ends: 55 [2020-11-30 01:49:33,195 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 [2020-11-30 01:49:33,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-30 01:49:33,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-30 01:49:33,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-30 01:49:33,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-11-30 01:49:33,202 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 16 [2020-11-30 01:49:33,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:33,202 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-11-30 01:49:33,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:49:33,203 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-11-30 01:49:33,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 01:49:33,203 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:33,203 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:33,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-30 01:49:33,204 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]=== [2020-11-30 01:49:33,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:33,205 INFO L82 PathProgramCache]: Analyzing trace with hash 2127759202, now seen corresponding path program 1 times [2020-11-30 01:49:33,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:33,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360552040] [2020-11-30 01:49:33,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:33,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:33,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360552040] [2020-11-30 01:49:33,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966064322] [2020-11-30 01:49:33,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3c3a42e-2c76-4eb3-bd36-7ad699fa7e23/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 [2020-11-30 01:49:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:33,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 01:49:33,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:49:33,611 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:49:33,617 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 01:49:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:33,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:49:33,655 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:49:33,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 01:49:33,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [394144166] [2020-11-30 01:49:33,713 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2020-11-30 01:49:33,714 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:49:33,718 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:49:33,724 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:49:33,724 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:49:34,292 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:49:34,673 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2020-11-30 01:49:35,033 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-11-30 01:49:35,229 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-11-30 01:49:35,461 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-11-30 01:49:35,741 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-11-30 01:49:36,013 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2020-11-30 01:49:36,677 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2020-11-30 01:49:36,922 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2020-11-30 01:49:37,232 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2020-11-30 01:49:37,518 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-11-30 01:49:37,871 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2020-11-30 01:49:38,217 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2020-11-30 01:49:38,500 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2020-11-30 01:49:38,502 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:49:38,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:49:38,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 13 [2020-11-30 01:49:38,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845231963] [2020-11-30 01:49:38,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 01:49:38,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:38,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 01:49:38,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2020-11-30 01:49:38,504 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 13 states. [2020-11-30 01:49:38,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:38,842 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2020-11-30 01:49:38,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-30 01:49:38,843 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2020-11-30 01:49:38,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:38,844 INFO L225 Difference]: With dead ends: 120 [2020-11-30 01:49:38,844 INFO L226 Difference]: Without dead ends: 118 [2020-11-30 01:49:38,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2020-11-30 01:49:38,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-11-30 01:49:38,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 51. [2020-11-30 01:49:38,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-30 01:49:38,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2020-11-30 01:49:38,850 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 17 [2020-11-30 01:49:38,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:38,852 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2020-11-30 01:49:38,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 01:49:38,853 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2020-11-30 01:49:38,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 01:49:38,853 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:38,854 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:39,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:49:39,065 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]=== [2020-11-30 01:49:39,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:39,066 INFO L82 PathProgramCache]: Analyzing trace with hash 2128374882, now seen corresponding path program 1 times [2020-11-30 01:49:39,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:39,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935860173] [2020-11-30 01:49:39,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:39,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:39,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935860173] [2020-11-30 01:49:39,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666373513] [2020-11-30 01:49:39,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3c3a42e-2c76-4eb3-bd36-7ad699fa7e23/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 [2020-11-30 01:49:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:39,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 01:49:39,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:49:39,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:39,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:49:39,447 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 01:49:39,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1761369501] [2020-11-30 01:49:39,450 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2020-11-30 01:49:39,450 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:49:39,450 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:49:39,450 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:49:39,451 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:49:39,758 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:49:40,125 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2020-11-30 01:49:40,304 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-11-30 01:49:40,501 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-11-30 01:49:40,669 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-11-30 01:49:40,947 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-11-30 01:49:41,190 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2020-11-30 01:49:41,778 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2020-11-30 01:49:41,953 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-11-30 01:49:42,244 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2020-11-30 01:49:42,491 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2020-11-30 01:49:42,834 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-11-30 01:49:42,835 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:49:42,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:49:42,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 13 [2020-11-30 01:49:42,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220351453] [2020-11-30 01:49:42,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 01:49:42,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:42,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 01:49:42,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2020-11-30 01:49:42,837 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 13 states. [2020-11-30 01:49:43,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:43,179 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2020-11-30 01:49:43,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-30 01:49:43,179 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2020-11-30 01:49:43,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:43,180 INFO L225 Difference]: With dead ends: 99 [2020-11-30 01:49:43,180 INFO L226 Difference]: Without dead ends: 97 [2020-11-30 01:49:43,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2020-11-30 01:49:43,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-30 01:49:43,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 44. [2020-11-30 01:49:43,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-30 01:49:43,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-11-30 01:49:43,186 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 17 [2020-11-30 01:49:43,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:43,186 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-11-30 01:49:43,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 01:49:43,187 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-11-30 01:49:43,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 01:49:43,187 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:43,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:43,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-11-30 01:49:43,400 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]=== [2020-11-30 01:49:43,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:43,400 INFO L82 PathProgramCache]: Analyzing trace with hash -187129202, now seen corresponding path program 1 times [2020-11-30 01:49:43,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:43,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658076536] [2020-11-30 01:49:43,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:43,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:43,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658076536] [2020-11-30 01:49:43,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:43,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:49:43,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993404615] [2020-11-30 01:49:43,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:49:43,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:43,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:49:43,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:49:43,496 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 6 states. [2020-11-30 01:49:43,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:43,618 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-11-30 01:49:43,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:49:43,619 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-30 01:49:43,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:43,619 INFO L225 Difference]: With dead ends: 59 [2020-11-30 01:49:43,620 INFO L226 Difference]: Without dead ends: 57 [2020-11-30 01:49:43,620 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 [2020-11-30 01:49:43,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-30 01:49:43,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2020-11-30 01:49:43,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 01:49:43,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-11-30 01:49:43,628 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 17 [2020-11-30 01:49:43,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:43,628 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-11-30 01:49:43,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:49:43,629 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-11-30 01:49:43,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:49:43,630 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:43,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:43,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-11-30 01:49:43,631 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]=== [2020-11-30 01:49:43,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:43,635 INFO L82 PathProgramCache]: Analyzing trace with hash 548809757, now seen corresponding path program 1 times [2020-11-30 01:49:43,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:43,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453126415] [2020-11-30 01:49:43,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:43,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:43,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453126415] [2020-11-30 01:49:43,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:43,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 01:49:43,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67162438] [2020-11-30 01:49:43,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:49:43,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:43,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:49:43,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:49:43,708 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 7 states. [2020-11-30 01:49:43,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:43,807 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-11-30 01:49:43,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:49:43,810 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-11-30 01:49:43,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:43,811 INFO L225 Difference]: With dead ends: 51 [2020-11-30 01:49:43,811 INFO L226 Difference]: Without dead ends: 49 [2020-11-30 01:49:43,812 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 [2020-11-30 01:49:43,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-30 01:49:43,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2020-11-30 01:49:43,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-30 01:49:43,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-11-30 01:49:43,816 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 18 [2020-11-30 01:49:43,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:43,816 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-11-30 01:49:43,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:49:43,816 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-11-30 01:49:43,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:49:43,817 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:43,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:49:43,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-11-30 01:49:43,817 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]=== [2020-11-30 01:49:43,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:43,817 INFO L82 PathProgramCache]: Analyzing trace with hash 613702497, now seen corresponding path program 1 times [2020-11-30 01:49:43,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:43,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714373260] [2020-11-30 01:49:43,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:43,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:43,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714373260] [2020-11-30 01:49:43,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:43,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 01:49:43,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57845606] [2020-11-30 01:49:43,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:49:43,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:43,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:49:43,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:49:43,874 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 7 states. [2020-11-30 01:49:43,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:43,936 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-11-30 01:49:43,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:49:43,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-11-30 01:49:43,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:43,937 INFO L225 Difference]: With dead ends: 34 [2020-11-30 01:49:43,937 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:49:43,937 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 [2020-11-30 01:49:43,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:49:43,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:49:43,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:49:43,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:49:43,938 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-30 01:49:43,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:43,938 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:49:43,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:49:43,939 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:49:43,939 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:49:43,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-11-30 01:49:43,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 01:49:44,215 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2020-11-30 01:49:44,448 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 24 [2020-11-30 01:49:44,876 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 33 [2020-11-30 01:49:44,880 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,880 INFO L274 CegarLoopResult]: For program point L234(lines 234 242) no Hoare annotation was computed. [2020-11-30 01:49:44,880 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,880 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 01:49:44,880 INFO L274 CegarLoopResult]: For program point L152(lines 152 160) no Hoare annotation was computed. [2020-11-30 01:49:44,880 INFO L274 CegarLoopResult]: For program point L20(lines 20 401) no Hoare annotation was computed. [2020-11-30 01:49:44,881 INFO L277 CegarLoopResult]: At program point L400(lines 15 402) the Hoare annotation is: true [2020-11-30 01:49:44,881 INFO L274 CegarLoopResult]: For program point L70(lines 70 94) no Hoare annotation was computed. [2020-11-30 01:49:44,881 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,881 INFO L274 CegarLoopResult]: For program point L4-2(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,881 INFO L274 CegarLoopResult]: For program point L4-4(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,881 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)))))) [2020-11-30 01:49:44,882 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)))))) [2020-11-30 01:49:44,882 INFO L274 CegarLoopResult]: For program point L4-6(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,882 INFO L274 CegarLoopResult]: For program point L4-8(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,882 INFO L274 CegarLoopResult]: For program point L4-10(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,882 INFO L274 CegarLoopResult]: For program point L186(lines 186 196) no Hoare annotation was computed. [2020-11-30 01:49:44,882 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,882 INFO L274 CegarLoopResult]: For program point L4-12(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,882 INFO L274 CegarLoopResult]: For program point L4-14(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,883 INFO L274 CegarLoopResult]: For program point L4-16(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,883 INFO L274 CegarLoopResult]: For program point L4-18(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,883 INFO L274 CegarLoopResult]: For program point L4-20(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,883 INFO L274 CegarLoopResult]: For program point L4-22(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,883 INFO L274 CegarLoopResult]: For program point L4-24(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,883 INFO L274 CegarLoopResult]: For program point L4-26(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,883 INFO L274 CegarLoopResult]: For program point L4-28(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,883 INFO L274 CegarLoopResult]: For program point L4-30(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,883 INFO L274 CegarLoopResult]: For program point L4-32(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,883 INFO L274 CegarLoopResult]: For program point L4-34(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,884 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,884 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,884 INFO L274 CegarLoopResult]: For program point L105(lines 105 209) no Hoare annotation was computed. [2020-11-30 01:49:44,884 INFO L274 CegarLoopResult]: For program point L39(lines 39 255) no Hoare annotation was computed. [2020-11-30 01:49:44,884 INFO L274 CegarLoopResult]: For program point L288(lines 288 390) no Hoare annotation was computed. [2020-11-30 01:49:44,884 INFO L274 CegarLoopResult]: For program point L222(lines 222 244) no Hoare annotation was computed. [2020-11-30 01:49:44,884 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,884 INFO L274 CegarLoopResult]: For program point L24(lines 24 396) no Hoare annotation was computed. [2020-11-30 01:49:44,884 INFO L274 CegarLoopResult]: For program point L140(lines 140 162) no Hoare annotation was computed. [2020-11-30 01:49:44,884 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 01:49:44,885 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,885 INFO L274 CegarLoopResult]: For program point L124(lines 124 201) no Hoare annotation was computed. [2020-11-30 01:49:44,885 INFO L274 CegarLoopResult]: For program point L174(lines 174 198) no Hoare annotation was computed. [2020-11-30 01:49:44,885 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,885 INFO L274 CegarLoopResult]: For program point L307(lines 307 315) no Hoare annotation was computed. [2020-11-30 01:49:44,885 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,885 INFO L274 CegarLoopResult]: For program point L324(lines 324 389) no Hoare annotation was computed. [2020-11-30 01:49:44,885 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,885 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,886 INFO L274 CegarLoopResult]: For program point L276(lines 276 391) no Hoare annotation was computed. [2020-11-30 01:49:44,886 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,886 INFO L274 CegarLoopResult]: For program point L376(lines 376 385) no Hoare annotation was computed. [2020-11-30 01:49:44,886 INFO L274 CegarLoopResult]: For program point L343(lines 343 352) no Hoare annotation was computed. [2020-11-30 01:49:44,886 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,886 INFO L274 CegarLoopResult]: For program point L112(lines 112 203) no Hoare annotation was computed. [2020-11-30 01:49:44,886 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,888 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)) [2020-11-30 01:49:44,888 INFO L274 CegarLoopResult]: For program point L295(lines 295 317) no Hoare annotation was computed. [2020-11-30 01:49:44,888 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,888 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,888 INFO L274 CegarLoopResult]: For program point L32(lines 32 395) no Hoare annotation was computed. [2020-11-30 01:49:44,888 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,889 INFO L274 CegarLoopResult]: For program point L82(lines 82 92) no Hoare annotation was computed. [2020-11-30 01:49:44,889 INFO L277 CegarLoopResult]: At program point L314(lines 32 395) the Hoare annotation is: true [2020-11-30 01:49:44,889 INFO L274 CegarLoopResult]: For program point L215(lines 215 250) no Hoare annotation was computed. [2020-11-30 01:49:44,889 INFO L274 CegarLoopResult]: For program point L50(lines 50 253) no Hoare annotation was computed. [2020-11-30 01:49:44,889 INFO L274 CegarLoopResult]: For program point L364(lines 364 387) no Hoare annotation was computed. [2020-11-30 01:49:44,889 INFO L274 CegarLoopResult]: For program point L331(lines 331 354) no Hoare annotation was computed. [2020-11-30 01:49:44,890 INFO L274 CegarLoopResult]: For program point L265(lines 265 393) no Hoare annotation was computed. [2020-11-30 01:49:44,890 INFO L274 CegarLoopResult]: For program point L133(lines 133 200) no Hoare annotation was computed. [2020-11-30 01:49:44,890 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:49:44,890 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)) [2020-11-30 01:49:44,890 INFO L274 CegarLoopResult]: For program point L101(lines 101 251) no Hoare annotation was computed. [2020-11-30 01:49:44,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:49:44 BoogieIcfgContainer [2020-11-30 01:49:44,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:49:44,911 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:49:44,911 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:49:44,912 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:49:44,912 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:49:28" (3/4) ... [2020-11-30 01:49:44,921 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:49:44,941 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-30 01:49:44,941 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 01:49:44,942 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:49:44,943 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:49:45,013 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f3c3a42e-2c76-4eb3-bd36-7ad699fa7e23/bin/utaipan/witness.graphml [2020-11-30 01:49:45,013 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:49:45,014 INFO L168 Benchmark]: Toolchain (without parser) took 17276.10 ms. Allocated memory was 98.6 MB in the beginning and 251.7 MB in the end (delta: 153.1 MB). Free memory was 68.3 MB in the beginning and 135.2 MB in the end (delta: -66.9 MB). Peak memory consumption was 87.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:49:45,014 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 73.4 MB. Free memory was 35.5 MB in the beginning and 35.5 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:49:45,015 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.53 ms. Allocated memory is still 98.6 MB. Free memory was 68.2 MB in the beginning and 74.1 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:49:45,015 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.61 ms. Allocated memory is still 98.6 MB. Free memory was 74.1 MB in the beginning and 72.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:49:45,016 INFO L168 Benchmark]: Boogie Preprocessor took 28.44 ms. Allocated memory is still 98.6 MB. Free memory was 72.0 MB in the beginning and 70.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:49:45,016 INFO L168 Benchmark]: RCFGBuilder took 788.21 ms. Allocated memory is still 98.6 MB. Free memory was 70.4 MB in the beginning and 38.4 MB in the end (delta: 32.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:49:45,017 INFO L168 Benchmark]: TraceAbstraction took 15957.52 ms. Allocated memory was 98.6 MB in the beginning and 251.7 MB in the end (delta: 153.1 MB). Free memory was 37.9 MB in the beginning and 141.5 MB in the end (delta: -103.6 MB). Peak memory consumption was 115.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:49:45,017 INFO L168 Benchmark]: Witness Printer took 101.91 ms. Allocated memory is still 251.7 MB. Free memory was 141.5 MB in the beginning and 135.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:49:45,019 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 73.4 MB. Free memory was 35.5 MB in the beginning and 35.5 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 348.53 ms. Allocated memory is still 98.6 MB. Free memory was 68.2 MB in the beginning and 74.1 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.61 ms. Allocated memory is still 98.6 MB. Free memory was 74.1 MB in the beginning and 72.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.44 ms. Allocated memory is still 98.6 MB. Free memory was 72.0 MB in the beginning and 70.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 788.21 ms. Allocated memory is still 98.6 MB. Free memory was 70.4 MB in the beginning and 38.4 MB in the end (delta: 32.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15957.52 ms. Allocated memory was 98.6 MB in the beginning and 251.7 MB in the end (delta: 153.1 MB). Free memory was 37.9 MB in the beginning and 141.5 MB in the end (delta: -103.6 MB). Peak memory consumption was 115.6 MB. Max. memory is 16.1 GB. * Witness Printer took 101.91 ms. Allocated memory is still 251.7 MB. Free memory was 141.5 MB in the beginning and 135.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 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: 14.9s, OverallIterations: 23, TraceHistogramMax: 2, AutomataDifference: 3.2s, 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, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 259 GetRequests, 100 SyntacticMatches, 10 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 8.8s 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, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s 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...