./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-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_7506d623-989b-4f18-a8e9-3fe20bc712cf/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7506d623-989b-4f18-a8e9-3fe20bc712cf/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7506d623-989b-4f18-a8e9-3fe20bc712cf/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7506d623-989b-4f18-a8e9-3fe20bc712cf/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7506d623-989b-4f18-a8e9-3fe20bc712cf/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7506d623-989b-4f18-a8e9-3fe20bc712cf/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef15c4790969d8e640b2241771e44174daa41407 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:20:47,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:20:47,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:20:47,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:20:47,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:20:47,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:20:47,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:20:47,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:20:47,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:20:47,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:20:47,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:20:47,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:20:47,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:20:47,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:20:47,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:20:47,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:20:47,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:20:47,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:20:47,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:20:47,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:20:47,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:20:47,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:20:47,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:20:47,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:20:47,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:20:47,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:20:47,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:20:47,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:20:47,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:20:47,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:20:47,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:20:47,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:20:47,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:20:47,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:20:47,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:20:47,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:20:47,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:20:47,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:20:47,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:20:47,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:20:47,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:20:47,389 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7506d623-989b-4f18-a8e9-3fe20bc712cf/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:20:47,426 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:20:47,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:20:47,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:20:47,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:20:47,429 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:20:47,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:20:47,430 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:20:47,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:20:47,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:20:47,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:20:47,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:20:47,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:20:47,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:20:47,433 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:20:47,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:20:47,433 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:20:47,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:20:47,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:20:47,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:20:47,434 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:20:47,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:20:47,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:20:47,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:20:47,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:20:47,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:20:47,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:20:47,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:20:47,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:20:47,437 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:20:47,437 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_7506d623-989b-4f18-a8e9-3fe20bc712cf/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7506d623-989b-4f18-a8e9-3fe20bc712cf/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef15c4790969d8e640b2241771e44174daa41407 [2020-11-28 03:20:47,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:20:47,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:20:47,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:20:47,765 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:20:47,766 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:20:47,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7506d623-989b-4f18-a8e9-3fe20bc712cf/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-11-28 03:20:47,906 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7506d623-989b-4f18-a8e9-3fe20bc712cf/bin/uautomizer/data/cdb1853df/fa8ceedf4a704f628e349745b4d2112e/FLAG85f65954e [2020-11-28 03:20:48,542 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:20:48,545 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7506d623-989b-4f18-a8e9-3fe20bc712cf/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-11-28 03:20:48,554 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7506d623-989b-4f18-a8e9-3fe20bc712cf/bin/uautomizer/data/cdb1853df/fa8ceedf4a704f628e349745b4d2112e/FLAG85f65954e [2020-11-28 03:20:48,906 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7506d623-989b-4f18-a8e9-3fe20bc712cf/bin/uautomizer/data/cdb1853df/fa8ceedf4a704f628e349745b4d2112e [2020-11-28 03:20:48,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:20:48,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:20:48,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:48,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:20:48,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:20:48,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:48" (1/1) ... [2020-11-28 03:20:48,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ca64fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:48, skipping insertion in model container [2020-11-28 03:20:48,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:48" (1/1) ... [2020-11-28 03:20:48,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:20:48,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:20:49,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:49,277 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:20:49,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:49,377 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:20:49,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:49 WrapperNode [2020-11-28 03:20:49,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:49,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:49,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:20:49,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:20:49,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:49" (1/1) ... [2020-11-28 03:20:49,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:49" (1/1) ... [2020-11-28 03:20:49,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:49,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:20:49,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:20:49,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:20:49,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:49" (1/1) ... [2020-11-28 03:20:49,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:49" (1/1) ... [2020-11-28 03:20:49,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:49" (1/1) ... [2020-11-28 03:20:49,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:49" (1/1) ... [2020-11-28 03:20:49,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:49" (1/1) ... [2020-11-28 03:20:49,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:49" (1/1) ... [2020-11-28 03:20:49,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:49" (1/1) ... [2020-11-28 03:20:49,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:20:49,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:20:49,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:20:49,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:20:49,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7506d623-989b-4f18-a8e9-3fe20bc712cf/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:20:49,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:20:49,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:20:49,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:20:49,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:20:50,174 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:20:50,176 INFO L298 CfgBuilder]: Removed 38 assume(true) statements. [2020-11-28 03:20:50,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:50 BoogieIcfgContainer [2020-11-28 03:20:50,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:20:50,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:20:50,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:20:50,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:20:50,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:20:48" (1/3) ... [2020-11-28 03:20:50,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d9f301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:20:50, skipping insertion in model container [2020-11-28 03:20:50,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:49" (2/3) ... [2020-11-28 03:20:50,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d9f301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:20:50, skipping insertion in model container [2020-11-28 03:20:50,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:50" (3/3) ... [2020-11-28 03:20:50,191 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+nlh-reducer.c [2020-11-28 03:20:50,203 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:20:50,208 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-11-28 03:20:50,219 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-11-28 03:20:50,245 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:20:50,245 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:20:50,246 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:20:50,246 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:20:50,246 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:20:50,246 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:20:50,246 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:20:50,246 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:20:50,270 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-11-28 03:20:50,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:20:50,280 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:50,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:50,286 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:50,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:50,293 INFO L82 PathProgramCache]: Analyzing trace with hash 124710446, now seen corresponding path program 1 times [2020-11-28 03:20:50,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:50,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415183903] [2020-11-28 03:20:50,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:50,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415183903] [2020-11-28 03:20:50,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:50,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:20:50,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226745776] [2020-11-28 03:20:50,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:20:50,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:50,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:20:50,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:20:50,569 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-11-28 03:20:50,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:50,799 INFO L93 Difference]: Finished difference Result 142 states and 183 transitions. [2020-11-28 03:20:50,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:20:50,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 03:20:50,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:50,814 INFO L225 Difference]: With dead ends: 142 [2020-11-28 03:20:50,814 INFO L226 Difference]: Without dead ends: 109 [2020-11-28 03:20:50,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:50,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-28 03:20:50,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 65. [2020-11-28 03:20:50,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-28 03:20:50,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-11-28 03:20:50,908 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 8 [2020-11-28 03:20:50,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:50,909 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-11-28 03:20:50,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:20:50,910 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-11-28 03:20:50,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:20:50,911 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:50,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:50,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:20:50,915 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:50,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:50,919 INFO L82 PathProgramCache]: Analyzing trace with hash 120336139, now seen corresponding path program 1 times [2020-11-28 03:20:50,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:50,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109216966] [2020-11-28 03:20:50,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:51,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:51,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109216966] [2020-11-28 03:20:51,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:51,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:20:51,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227968463] [2020-11-28 03:20:51,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:20:51,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:51,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:20:51,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:20:51,023 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 4 states. [2020-11-28 03:20:51,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:51,190 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-11-28 03:20:51,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:20:51,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 03:20:51,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:51,193 INFO L225 Difference]: With dead ends: 65 [2020-11-28 03:20:51,194 INFO L226 Difference]: Without dead ends: 63 [2020-11-28 03:20:51,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:51,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-28 03:20:51,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-28 03:20:51,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-28 03:20:51,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-11-28 03:20:51,208 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 8 [2020-11-28 03:20:51,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:51,209 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-11-28 03:20:51,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:20:51,209 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-11-28 03:20:51,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:20:51,210 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:51,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:51,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:20:51,210 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:51,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:51,211 INFO L82 PathProgramCache]: Analyzing trace with hash -564540945, now seen corresponding path program 1 times [2020-11-28 03:20:51,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:51,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908371811] [2020-11-28 03:20:51,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:51,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:51,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908371811] [2020-11-28 03:20:51,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:51,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:20:51,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335249419] [2020-11-28 03:20:51,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:20:51,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:51,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:20:51,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:20:51,315 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 4 states. [2020-11-28 03:20:51,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:51,401 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-11-28 03:20:51,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:20:51,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-28 03:20:51,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:51,402 INFO L225 Difference]: With dead ends: 69 [2020-11-28 03:20:51,403 INFO L226 Difference]: Without dead ends: 67 [2020-11-28 03:20:51,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:51,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-28 03:20:51,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-11-28 03:20:51,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-28 03:20:51,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-11-28 03:20:51,413 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 9 [2020-11-28 03:20:51,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:51,413 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-11-28 03:20:51,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:20:51,414 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-11-28 03:20:51,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:20:51,414 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:51,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:51,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:20:51,415 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:51,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:51,416 INFO L82 PathProgramCache]: Analyzing trace with hash 108108288, now seen corresponding path program 1 times [2020-11-28 03:20:51,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:51,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167266585] [2020-11-28 03:20:51,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:51,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:51,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167266585] [2020-11-28 03:20:51,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:51,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:20:51,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818873869] [2020-11-28 03:20:51,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:20:51,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:51,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:20:51,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:51,510 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 5 states. [2020-11-28 03:20:51,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:51,642 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-11-28 03:20:51,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:20:51,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 03:20:51,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:51,644 INFO L225 Difference]: With dead ends: 67 [2020-11-28 03:20:51,644 INFO L226 Difference]: Without dead ends: 65 [2020-11-28 03:20:51,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:20:51,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-28 03:20:51,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-11-28 03:20:51,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-28 03:20:51,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-11-28 03:20:51,653 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 11 [2020-11-28 03:20:51,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:51,653 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-11-28 03:20:51,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:20:51,654 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-11-28 03:20:51,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:20:51,654 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:51,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:51,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:20:51,655 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:51,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:51,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1357780173, now seen corresponding path program 1 times [2020-11-28 03:20:51,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:51,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297326108] [2020-11-28 03:20:51,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:51,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:51,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297326108] [2020-11-28 03:20:51,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:51,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:20:51,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666744215] [2020-11-28 03:20:51,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:20:51,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:51,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:20:51,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:51,743 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2020-11-28 03:20:51,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:51,884 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-11-28 03:20:51,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:20:51,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 03:20:51,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:51,886 INFO L225 Difference]: With dead ends: 65 [2020-11-28 03:20:51,886 INFO L226 Difference]: Without dead ends: 63 [2020-11-28 03:20:51,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:20:51,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-28 03:20:51,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-11-28 03:20:51,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-28 03:20:51,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-11-28 03:20:51,898 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 11 [2020-11-28 03:20:51,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:51,899 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-11-28 03:20:51,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:20:51,899 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-11-28 03:20:51,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:20:51,901 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:51,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:51,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:20:51,902 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:51,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:51,903 INFO L82 PathProgramCache]: Analyzing trace with hash -942992459, now seen corresponding path program 1 times [2020-11-28 03:20:51,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:51,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630492205] [2020-11-28 03:20:51,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:51,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:51,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630492205] [2020-11-28 03:20:51,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:51,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:20:51,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756844884] [2020-11-28 03:20:51,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:20:51,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:51,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:20:51,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:51,989 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 5 states. [2020-11-28 03:20:52,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:52,172 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2020-11-28 03:20:52,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:20:52,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 03:20:52,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:52,175 INFO L225 Difference]: With dead ends: 108 [2020-11-28 03:20:52,175 INFO L226 Difference]: Without dead ends: 106 [2020-11-28 03:20:52,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:20:52,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-28 03:20:52,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 60. [2020-11-28 03:20:52,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-28 03:20:52,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-11-28 03:20:52,193 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 12 [2020-11-28 03:20:52,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:52,194 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-11-28 03:20:52,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:20:52,195 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-11-28 03:20:52,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:20:52,195 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:52,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:52,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:20:52,196 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:52,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:52,197 INFO L82 PathProgramCache]: Analyzing trace with hash -943604167, now seen corresponding path program 1 times [2020-11-28 03:20:52,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:52,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37545551] [2020-11-28 03:20:52,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:52,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:52,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37545551] [2020-11-28 03:20:52,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:52,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:20:52,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743250981] [2020-11-28 03:20:52,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:20:52,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:52,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:20:52,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:20:52,279 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 4 states. [2020-11-28 03:20:52,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:52,361 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-11-28 03:20:52,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:20:52,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 03:20:52,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:52,362 INFO L225 Difference]: With dead ends: 61 [2020-11-28 03:20:52,362 INFO L226 Difference]: Without dead ends: 57 [2020-11-28 03:20:52,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:52,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-28 03:20:52,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-11-28 03:20:52,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-28 03:20:52,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-11-28 03:20:52,369 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 12 [2020-11-28 03:20:52,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:52,369 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-11-28 03:20:52,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:20:52,369 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-11-28 03:20:52,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:20:52,370 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:52,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:52,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:20:52,371 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:52,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:52,371 INFO L82 PathProgramCache]: Analyzing trace with hash 858493661, now seen corresponding path program 1 times [2020-11-28 03:20:52,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:52,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868190957] [2020-11-28 03:20:52,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:52,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:52,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868190957] [2020-11-28 03:20:52,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:52,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:20:52,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276304122] [2020-11-28 03:20:52,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:20:52,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:52,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:20:52,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:20:52,449 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 4 states. [2020-11-28 03:20:52,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:52,520 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2020-11-28 03:20:52,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:20:52,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 03:20:52,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:52,521 INFO L225 Difference]: With dead ends: 57 [2020-11-28 03:20:52,522 INFO L226 Difference]: Without dead ends: 53 [2020-11-28 03:20:52,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:52,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-28 03:20:52,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-11-28 03:20:52,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-28 03:20:52,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-11-28 03:20:52,527 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 12 [2020-11-28 03:20:52,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:52,528 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-11-28 03:20:52,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:20:52,528 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-11-28 03:20:52,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:20:52,534 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:52,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:52,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:20:52,535 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:52,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:52,536 INFO L82 PathProgramCache]: Analyzing trace with hash 832011069, now seen corresponding path program 1 times [2020-11-28 03:20:52,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:52,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577893326] [2020-11-28 03:20:52,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:52,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:52,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577893326] [2020-11-28 03:20:52,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:52,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:20:52,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925670084] [2020-11-28 03:20:52,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:20:52,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:52,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:20:52,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:20:52,715 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 6 states. [2020-11-28 03:20:52,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:52,931 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2020-11-28 03:20:52,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:20:52,932 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-28 03:20:52,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:52,933 INFO L225 Difference]: With dead ends: 118 [2020-11-28 03:20:52,933 INFO L226 Difference]: Without dead ends: 116 [2020-11-28 03:20:52,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:20:52,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-28 03:20:52,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 57. [2020-11-28 03:20:52,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-28 03:20:52,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2020-11-28 03:20:52,945 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 13 [2020-11-28 03:20:52,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:52,946 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2020-11-28 03:20:52,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:20:52,946 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2020-11-28 03:20:52,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:20:52,947 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:52,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:52,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:20:52,947 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:52,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:52,948 INFO L82 PathProgramCache]: Analyzing trace with hash 866403148, now seen corresponding path program 1 times [2020-11-28 03:20:52,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:52,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894892738] [2020-11-28 03:20:52,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:53,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:53,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894892738] [2020-11-28 03:20:53,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:53,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:20:53,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691652264] [2020-11-28 03:20:53,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:20:53,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:53,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:20:53,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:53,027 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 5 states. [2020-11-28 03:20:53,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:53,125 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-11-28 03:20:53,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:20:53,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 03:20:53,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:53,132 INFO L225 Difference]: With dead ends: 57 [2020-11-28 03:20:53,132 INFO L226 Difference]: Without dead ends: 55 [2020-11-28 03:20:53,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:20:53,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-28 03:20:53,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-28 03:20:53,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-28 03:20:53,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-11-28 03:20:53,138 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 13 [2020-11-28 03:20:53,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:53,139 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-11-28 03:20:53,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:20:53,139 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-11-28 03:20:53,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:20:53,140 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:53,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:53,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:20:53,143 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:53,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:53,143 INFO L82 PathProgramCache]: Analyzing trace with hash 864309836, now seen corresponding path program 1 times [2020-11-28 03:20:53,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:53,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512225920] [2020-11-28 03:20:53,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:53,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:53,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512225920] [2020-11-28 03:20:53,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:53,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:20:53,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551785601] [2020-11-28 03:20:53,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:20:53,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:53,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:20:53,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:53,200 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 5 states. [2020-11-28 03:20:53,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:53,315 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2020-11-28 03:20:53,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:20:53,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 03:20:53,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:53,316 INFO L225 Difference]: With dead ends: 70 [2020-11-28 03:20:53,316 INFO L226 Difference]: Without dead ends: 68 [2020-11-28 03:20:53,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:20:53,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-28 03:20:53,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 53. [2020-11-28 03:20:53,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-28 03:20:53,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-11-28 03:20:53,322 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 13 [2020-11-28 03:20:53,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:53,323 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-11-28 03:20:53,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:20:53,323 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-11-28 03:20:53,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:20:53,324 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:53,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:53,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 03:20:53,325 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:53,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:53,325 INFO L82 PathProgramCache]: Analyzing trace with hash 14757244, now seen corresponding path program 1 times [2020-11-28 03:20:53,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:53,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422347849] [2020-11-28 03:20:53,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:53,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422347849] [2020-11-28 03:20:53,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:53,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:20:53,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059234459] [2020-11-28 03:20:53,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:20:53,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:53,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:20:53,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:20:53,474 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 6 states. [2020-11-28 03:20:53,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:53,599 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2020-11-28 03:20:53,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:20:53,600 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 03:20:53,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:53,602 INFO L225 Difference]: With dead ends: 78 [2020-11-28 03:20:53,602 INFO L226 Difference]: Without dead ends: 76 [2020-11-28 03:20:53,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:20:53,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-28 03:20:53,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 53. [2020-11-28 03:20:53,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-28 03:20:53,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-11-28 03:20:53,608 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 14 [2020-11-28 03:20:53,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:53,608 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-11-28 03:20:53,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:20:53,608 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-11-28 03:20:53,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:20:53,609 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:53,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:53,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 03:20:53,609 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:53,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:53,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1088699972, now seen corresponding path program 1 times [2020-11-28 03:20:53,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:53,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941714216] [2020-11-28 03:20:53,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:53,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:53,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941714216] [2020-11-28 03:20:53,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:53,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:20:53,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632921839] [2020-11-28 03:20:53,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:20:53,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:53,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:20:53,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:20:53,772 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 6 states. [2020-11-28 03:20:53,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:53,906 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2020-11-28 03:20:53,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:20:53,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 03:20:53,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:53,907 INFO L225 Difference]: With dead ends: 76 [2020-11-28 03:20:53,907 INFO L226 Difference]: Without dead ends: 72 [2020-11-28 03:20:53,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:20:53,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-28 03:20:53,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 59. [2020-11-28 03:20:53,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-28 03:20:53,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2020-11-28 03:20:53,916 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 14 [2020-11-28 03:20:53,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:53,916 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2020-11-28 03:20:53,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:20:53,920 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2020-11-28 03:20:53,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:20:53,927 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:53,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:53,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 03:20:53,928 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:53,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:53,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1089262030, now seen corresponding path program 1 times [2020-11-28 03:20:53,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:53,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918470353] [2020-11-28 03:20:53,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:53,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:53,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918470353] [2020-11-28 03:20:53,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:53,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:20:53,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292150512] [2020-11-28 03:20:53,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:20:53,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:53,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:20:53,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:53,993 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 5 states. [2020-11-28 03:20:54,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:54,116 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2020-11-28 03:20:54,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:20:54,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-28 03:20:54,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:54,117 INFO L225 Difference]: With dead ends: 79 [2020-11-28 03:20:54,117 INFO L226 Difference]: Without dead ends: 77 [2020-11-28 03:20:54,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:20:54,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-28 03:20:54,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 57. [2020-11-28 03:20:54,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-28 03:20:54,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-11-28 03:20:54,128 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 14 [2020-11-28 03:20:54,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:54,129 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-11-28 03:20:54,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:20:54,129 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-11-28 03:20:54,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:20:54,131 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:54,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:54,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 03:20:54,132 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:54,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:54,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1023807232, now seen corresponding path program 1 times [2020-11-28 03:20:54,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:54,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370183004] [2020-11-28 03:20:54,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:54,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:54,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370183004] [2020-11-28 03:20:54,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:54,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:20:54,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637732345] [2020-11-28 03:20:54,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:20:54,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:54,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:20:54,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:20:54,266 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 6 states. [2020-11-28 03:20:54,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:54,412 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2020-11-28 03:20:54,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:20:54,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 03:20:54,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:54,413 INFO L225 Difference]: With dead ends: 82 [2020-11-28 03:20:54,413 INFO L226 Difference]: Without dead ends: 80 [2020-11-28 03:20:54,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:20:54,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-28 03:20:54,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2020-11-28 03:20:54,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-28 03:20:54,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-11-28 03:20:54,419 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 14 [2020-11-28 03:20:54,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:54,419 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-11-28 03:20:54,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:20:54,419 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-11-28 03:20:54,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:20:54,420 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:54,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:54,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-28 03:20:54,426 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:54,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:54,427 INFO L82 PathProgramCache]: Analyzing trace with hash -592609303, now seen corresponding path program 1 times [2020-11-28 03:20:54,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:54,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477890061] [2020-11-28 03:20:54,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:54,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:54,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477890061] [2020-11-28 03:20:54,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:54,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:20:54,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373312463] [2020-11-28 03:20:54,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:20:54,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:54,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:20:54,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:20:54,586 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 6 states. [2020-11-28 03:20:54,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:54,736 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2020-11-28 03:20:54,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:20:54,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-28 03:20:54,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:54,737 INFO L225 Difference]: With dead ends: 87 [2020-11-28 03:20:54,737 INFO L226 Difference]: Without dead ends: 85 [2020-11-28 03:20:54,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:20:54,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-28 03:20:54,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 63. [2020-11-28 03:20:54,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-28 03:20:54,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2020-11-28 03:20:54,743 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 15 [2020-11-28 03:20:54,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:54,743 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2020-11-28 03:20:54,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:20:54,744 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2020-11-28 03:20:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:20:54,744 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:54,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:54,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-28 03:20:54,745 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:54,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:54,745 INFO L82 PathProgramCache]: Analyzing trace with hash 331428451, now seen corresponding path program 1 times [2020-11-28 03:20:54,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:54,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414847723] [2020-11-28 03:20:54,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:54,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:54,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414847723] [2020-11-28 03:20:54,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:54,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:20:54,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598855460] [2020-11-28 03:20:54,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:20:54,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:54,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:20:54,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:20:54,775 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 4 states. [2020-11-28 03:20:54,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:54,820 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2020-11-28 03:20:54,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:20:54,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-28 03:20:54,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:54,822 INFO L225 Difference]: With dead ends: 63 [2020-11-28 03:20:54,822 INFO L226 Difference]: Without dead ends: 61 [2020-11-28 03:20:54,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:54,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-28 03:20:54,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-11-28 03:20:54,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-28 03:20:54,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-11-28 03:20:54,828 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 16 [2020-11-28 03:20:54,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:54,828 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-11-28 03:20:54,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:20:54,829 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-11-28 03:20:54,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:20:54,829 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:54,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:54,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-28 03:20:54,830 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:54,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:54,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1684353502, now seen corresponding path program 1 times [2020-11-28 03:20:54,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:54,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730823605] [2020-11-28 03:20:54,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:54,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:54,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730823605] [2020-11-28 03:20:54,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:54,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:20:54,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651592351] [2020-11-28 03:20:54,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:20:54,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:54,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:20:54,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:20:54,860 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 4 states. [2020-11-28 03:20:54,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:54,918 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2020-11-28 03:20:54,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:20:54,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-28 03:20:54,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:54,920 INFO L225 Difference]: With dead ends: 61 [2020-11-28 03:20:54,920 INFO L226 Difference]: Without dead ends: 57 [2020-11-28 03:20:54,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:54,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-28 03:20:54,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-11-28 03:20:54,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-28 03:20:54,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-11-28 03:20:54,927 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 17 [2020-11-28 03:20:54,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:54,928 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-11-28 03:20:54,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:20:54,928 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-11-28 03:20:54,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:20:54,929 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:54,929 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:54,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-28 03:20:54,929 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:54,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:54,930 INFO L82 PathProgramCache]: Analyzing trace with hash -2089868866, now seen corresponding path program 1 times [2020-11-28 03:20:54,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:54,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085383410] [2020-11-28 03:20:54,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:55,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085383410] [2020-11-28 03:20:55,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099000412] [2020-11-28 03:20:55,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7506d623-989b-4f18-a8e9-3fe20bc712cf/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:20:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:55,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:20:55,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:55,451 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:20:55,468 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:20:55,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:55,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:20:55,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2020-11-28 03:20:55,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853230101] [2020-11-28 03:20:55,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 03:20:55,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:55,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 03:20:55,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:20:55,510 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 13 states. [2020-11-28 03:20:56,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:56,065 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2020-11-28 03:20:56,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-28 03:20:56,066 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-11-28 03:20:56,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:56,067 INFO L225 Difference]: With dead ends: 104 [2020-11-28 03:20:56,067 INFO L226 Difference]: Without dead ends: 102 [2020-11-28 03:20:56,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-11-28 03:20:56,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-28 03:20:56,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 53. [2020-11-28 03:20:56,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-28 03:20:56,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-11-28 03:20:56,074 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 18 [2020-11-28 03:20:56,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:56,074 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-11-28 03:20:56,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 03:20:56,074 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-11-28 03:20:56,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:20:56,077 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:56,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:56,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:20:56,278 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:56,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:56,279 INFO L82 PathProgramCache]: Analyzing trace with hash 694227744, now seen corresponding path program 1 times [2020-11-28 03:20:56,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:56,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799285902] [2020-11-28 03:20:56,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:56,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799285902] [2020-11-28 03:20:56,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:56,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:20:56,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098736030] [2020-11-28 03:20:56,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:20:56,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:56,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:20:56,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:20:56,389 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 6 states. [2020-11-28 03:20:56,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:56,541 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-11-28 03:20:56,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:20:56,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-28 03:20:56,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:56,542 INFO L225 Difference]: With dead ends: 68 [2020-11-28 03:20:56,542 INFO L226 Difference]: Without dead ends: 66 [2020-11-28 03:20:56,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:20:56,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-28 03:20:56,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 48. [2020-11-28 03:20:56,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-28 03:20:56,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-11-28 03:20:56,553 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 18 [2020-11-28 03:20:56,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:56,554 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-11-28 03:20:56,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:20:56,554 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-11-28 03:20:56,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:20:56,554 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:56,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:56,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-28 03:20:56,555 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:56,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:56,556 INFO L82 PathProgramCache]: Analyzing trace with hash 2065566423, now seen corresponding path program 1 times [2020-11-28 03:20:56,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:56,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772640273] [2020-11-28 03:20:56,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:56,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772640273] [2020-11-28 03:20:56,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:56,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:20:56,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921298229] [2020-11-28 03:20:56,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:20:56,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:56,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:20:56,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:20:56,626 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 6 states. [2020-11-28 03:20:56,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:56,744 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2020-11-28 03:20:56,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:20:56,744 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-28 03:20:56,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:56,745 INFO L225 Difference]: With dead ends: 48 [2020-11-28 03:20:56,745 INFO L226 Difference]: Without dead ends: 44 [2020-11-28 03:20:56,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:20:56,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-28 03:20:56,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-11-28 03:20:56,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-28 03:20:56,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-11-28 03:20:56,748 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 19 [2020-11-28 03:20:56,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:56,749 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-11-28 03:20:56,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:20:56,749 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-11-28 03:20:56,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:20:56,749 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:56,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:56,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-28 03:20:56,750 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:56,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:56,750 INFO L82 PathProgramCache]: Analyzing trace with hash 2000673683, now seen corresponding path program 1 times [2020-11-28 03:20:56,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:56,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32665630] [2020-11-28 03:20:56,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:56,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:56,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32665630] [2020-11-28 03:20:56,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:56,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:20:56,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795488778] [2020-11-28 03:20:56,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:20:56,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:56,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:20:56,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:20:56,854 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 6 states. [2020-11-28 03:20:56,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:56,974 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-11-28 03:20:56,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:20:56,977 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-28 03:20:56,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:56,977 INFO L225 Difference]: With dead ends: 51 [2020-11-28 03:20:56,977 INFO L226 Difference]: Without dead ends: 20 [2020-11-28 03:20:56,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:20:56,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-28 03:20:56,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-28 03:20:56,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 03:20:56,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-11-28 03:20:56,980 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 19 [2020-11-28 03:20:56,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:56,981 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-11-28 03:20:56,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:20:56,981 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-11-28 03:20:56,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:20:56,981 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:56,981 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:56,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-28 03:20:56,982 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:56,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:56,982 INFO L82 PathProgramCache]: Analyzing trace with hash -369207525, now seen corresponding path program 1 times [2020-11-28 03:20:56,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:56,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453104877] [2020-11-28 03:20:56,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:57,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:57,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453104877] [2020-11-28 03:20:57,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601791441] [2020-11-28 03:20:57,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7506d623-989b-4f18-a8e9-3fe20bc712cf/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:20:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:57,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:20:57,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:57,324 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:20:57,327 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:20:57,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:57,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:20:57,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2020-11-28 03:20:57,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418540768] [2020-11-28 03:20:57,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 03:20:57,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:57,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 03:20:57,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:20:57,349 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 13 states. [2020-11-28 03:20:57,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:57,493 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-11-28 03:20:57,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 03:20:57,493 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 19 [2020-11-28 03:20:57,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:57,493 INFO L225 Difference]: With dead ends: 31 [2020-11-28 03:20:57,493 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:20:57,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:20:57,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:20:57,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:20:57,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:20:57,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:20:57,494 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-28 03:20:57,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:57,495 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:20:57,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 03:20:57,495 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:20:57,495 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:20:57,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-28 03:20:57,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:20:57,819 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-11-28 03:20:58,181 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 15 [2020-11-28 03:20:58,448 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2020-11-28 03:20:58,806 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 25 [2020-11-28 03:20:58,959 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 15 [2020-11-28 03:20:58,962 INFO L274 CegarLoopResult]: For program point L349(lines 349 358) no Hoare annotation was computed. [2020-11-28 03:20:58,962 INFO L270 CegarLoopResult]: At program point L250(lines 102 252) the Hoare annotation is: (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) (<= 1 ULTIMATE.start_main_~main__t~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0))) [2020-11-28 03:20:58,962 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,962 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,963 INFO L274 CegarLoopResult]: For program point L102(lines 102 252) no Hoare annotation was computed. [2020-11-28 03:20:58,963 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:20:58,963 INFO L274 CegarLoopResult]: For program point L20(lines 20 374) no Hoare annotation was computed. [2020-11-28 03:20:58,963 INFO L274 CegarLoopResult]: For program point L235(lines 235 243) no Hoare annotation was computed. [2020-11-28 03:20:58,963 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,963 INFO L274 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,963 INFO L274 CegarLoopResult]: For program point L4-2(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,963 INFO L274 CegarLoopResult]: For program point L4-3(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,963 INFO L274 CegarLoopResult]: For program point L4-4(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,963 INFO L274 CegarLoopResult]: For program point L4-5(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,963 INFO L274 CegarLoopResult]: For program point L4-6(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,964 INFO L274 CegarLoopResult]: For program point L4-7(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,964 INFO L274 CegarLoopResult]: For program point L4-8(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,964 INFO L274 CegarLoopResult]: For program point L4-9(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,964 INFO L274 CegarLoopResult]: For program point L4-10(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,964 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,964 INFO L274 CegarLoopResult]: For program point L4-11(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,966 INFO L274 CegarLoopResult]: For program point L153(lines 153 161) no Hoare annotation was computed. [2020-11-28 03:20:58,966 INFO L274 CegarLoopResult]: For program point L4-12(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,966 INFO L274 CegarLoopResult]: For program point L4-13(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,967 INFO L274 CegarLoopResult]: For program point L54(lines 54 254) no Hoare annotation was computed. [2020-11-28 03:20:58,967 INFO L274 CegarLoopResult]: For program point L4-14(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,967 INFO L274 CegarLoopResult]: For program point L4-15(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,967 INFO L274 CegarLoopResult]: For program point L4-16(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,967 INFO L274 CegarLoopResult]: For program point L4-17(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,967 INFO L274 CegarLoopResult]: For program point L4-18(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,967 INFO L274 CegarLoopResult]: For program point L4-19(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,968 INFO L274 CegarLoopResult]: For program point L4-20(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,968 INFO L274 CegarLoopResult]: For program point L4-21(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,968 INFO L274 CegarLoopResult]: For program point L4-22(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,968 INFO L274 CegarLoopResult]: For program point L4-23(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,968 INFO L274 CegarLoopResult]: For program point L4-24(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,968 INFO L274 CegarLoopResult]: For program point L4-25(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,969 INFO L274 CegarLoopResult]: For program point L4-26(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,969 INFO L274 CegarLoopResult]: For program point L4-27(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,969 INFO L274 CegarLoopResult]: For program point L4-28(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,969 INFO L274 CegarLoopResult]: For program point L71(lines 71 95) no Hoare annotation was computed. [2020-11-28 03:20:58,969 INFO L274 CegarLoopResult]: For program point L4-29(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,970 INFO L274 CegarLoopResult]: For program point L4-30(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,970 INFO L274 CegarLoopResult]: For program point L4-31(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,970 INFO L274 CegarLoopResult]: For program point L4-32(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,970 INFO L274 CegarLoopResult]: For program point L4-33(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,971 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,971 INFO L274 CegarLoopResult]: For program point L187(lines 187 197) no Hoare annotation was computed. [2020-11-28 03:20:58,971 INFO L274 CegarLoopResult]: For program point L337(lines 337 360) no Hoare annotation was computed. [2020-11-28 03:20:58,971 INFO L274 CegarLoopResult]: For program point L106(lines 106 210) no Hoare annotation was computed. [2020-11-28 03:20:58,971 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,971 INFO L274 CegarLoopResult]: For program point L24(lines 24 369) no Hoare annotation was computed. [2020-11-28 03:20:58,972 INFO L274 CegarLoopResult]: For program point L289(lines 289 363) no Hoare annotation was computed. [2020-11-28 03:20:58,972 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:20:58,972 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,972 INFO L274 CegarLoopResult]: For program point L223(lines 223 245) no Hoare annotation was computed. [2020-11-28 03:20:58,972 INFO L274 CegarLoopResult]: For program point L141(lines 141 163) no Hoare annotation was computed. [2020-11-28 03:20:58,972 INFO L274 CegarLoopResult]: For program point L42(lines 42 256) no Hoare annotation was computed. [2020-11-28 03:20:58,973 INFO L274 CegarLoopResult]: For program point L125(lines 125 202) no Hoare annotation was computed. [2020-11-28 03:20:58,973 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,973 INFO L277 CegarLoopResult]: At program point L373(lines 15 375) the Hoare annotation is: true [2020-11-28 03:20:58,973 INFO L274 CegarLoopResult]: For program point L175(lines 175 199) no Hoare annotation was computed. [2020-11-28 03:20:58,973 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,975 INFO L270 CegarLoopResult]: At program point L357(lines 283 364) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~main__t~0 0))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)))) (or (and .cse3 .cse1) (and .cse3 (<= 1 ULTIMATE.start_main_~main__t~0)))))) (or (and .cse2 .cse1) (and .cse2 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~16 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) .cse0 (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~17))))) [2020-11-28 03:20:58,975 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,976 INFO L274 CegarLoopResult]: For program point L308(lines 308 316) no Hoare annotation was computed. [2020-11-28 03:20:58,976 INFO L274 CegarLoopResult]: For program point L325(lines 325 362) no Hoare annotation was computed. [2020-11-28 03:20:58,977 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,977 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:20:58,977 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,977 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,977 INFO L274 CegarLoopResult]: For program point L277(lines 277 364) no Hoare annotation was computed. [2020-11-28 03:20:58,977 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,977 INFO L274 CegarLoopResult]: For program point L113(lines 113 204) no Hoare annotation was computed. [2020-11-28 03:20:58,978 INFO L270 CegarLoopResult]: At program point L328(lines 32 368) the Hoare annotation is: (let ((.cse1 (< 0 ULTIMATE.start_main_~main__tagbuf_len~0)) (.cse2 (<= ULTIMATE.start_main_~main__t~0 1))) (let ((.cse0 (let ((.cse3 (or (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)) (and (<= 0 ULTIMATE.start_main_~main__tagbuf_len~0) (= ULTIMATE.start_main_~main__t~0 0)))) (.cse4 (<= 0 ULTIMATE.start_main_~main__t~0))) (or (and .cse3 .cse4 .cse1 .cse2) (and .cse3 .cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 0))))))) (or (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) .cse0 (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~17)) (and (not (= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) .cse1 .cse0 .cse2)))) [2020-11-28 03:20:58,978 INFO L270 CegarLoopResult]: At program point L196(lines 60 254) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) (<= 1 ULTIMATE.start_main_~main__t~0) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0))) [2020-11-28 03:20:58,978 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,979 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,979 INFO L274 CegarLoopResult]: For program point L296(lines 296 318) no Hoare annotation was computed. [2020-11-28 03:20:58,979 INFO L274 CegarLoopResult]: For program point L32(lines 32 368) no Hoare annotation was computed. [2020-11-28 03:20:58,980 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:20:58,980 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,980 INFO L274 CegarLoopResult]: For program point L83(lines 83 93) no Hoare annotation was computed. [2020-11-28 03:20:58,980 INFO L277 CegarLoopResult]: At program point L315(lines 32 368) the Hoare annotation is: true [2020-11-28 03:20:58,982 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:20:58,982 INFO L274 CegarLoopResult]: For program point L216(lines 216 251) no Hoare annotation was computed. [2020-11-28 03:20:58,983 INFO L274 CegarLoopResult]: For program point L266(lines 266 366) no Hoare annotation was computed. [2020-11-28 03:20:58,983 INFO L274 CegarLoopResult]: For program point L134(lines 134 201) no Hoare annotation was computed. [2020-11-28 03:20:59,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:20:59 BoogieIcfgContainer [2020-11-28 03:20:59,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:20:59,030 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:20:59,030 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:20:59,030 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:20:59,031 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:50" (3/4) ... [2020-11-28 03:20:59,034 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:20:59,052 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 03:20:59,053 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:20:59,053 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:20:59,054 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:20:59,171 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7506d623-989b-4f18-a8e9-3fe20bc712cf/bin/uautomizer/witness.graphml [2020-11-28 03:20:59,172 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:20:59,173 INFO L168 Benchmark]: Toolchain (without parser) took 10257.43 ms. Allocated memory was 88.1 MB in the beginning and 159.4 MB in the end (delta: 71.3 MB). Free memory was 56.3 MB in the beginning and 85.9 MB in the end (delta: -29.6 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:59,173 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 88.1 MB. Free memory is still 46.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:59,174 INFO L168 Benchmark]: CACSL2BoogieTranslator took 457.49 ms. Allocated memory is still 88.1 MB. Free memory was 56.1 MB in the beginning and 63.3 MB in the end (delta: -7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:59,174 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.59 ms. Allocated memory is still 88.1 MB. Free memory was 63.3 MB in the beginning and 61.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:59,175 INFO L168 Benchmark]: Boogie Preprocessor took 41.78 ms. Allocated memory is still 88.1 MB. Free memory was 61.2 MB in the beginning and 59.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:59,175 INFO L168 Benchmark]: RCFGBuilder took 707.14 ms. Allocated memory was 88.1 MB in the beginning and 132.1 MB in the end (delta: 44.0 MB). Free memory was 59.7 MB in the beginning and 108.7 MB in the end (delta: -48.9 MB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:59,176 INFO L168 Benchmark]: TraceAbstraction took 8846.10 ms. Allocated memory was 132.1 MB in the beginning and 159.4 MB in the end (delta: 27.3 MB). Free memory was 108.7 MB in the beginning and 92.2 MB in the end (delta: 16.5 MB). Peak memory consumption was 93.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:59,177 INFO L168 Benchmark]: Witness Printer took 142.01 ms. Allocated memory is still 159.4 MB. Free memory was 92.2 MB in the beginning and 85.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:59,180 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 88.1 MB. Free memory is still 46.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 457.49 ms. Allocated memory is still 88.1 MB. Free memory was 56.1 MB in the beginning and 63.3 MB in the end (delta: -7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.59 ms. Allocated memory is still 88.1 MB. Free memory was 63.3 MB in the beginning and 61.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.78 ms. Allocated memory is still 88.1 MB. Free memory was 61.2 MB in the beginning and 59.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 707.14 ms. Allocated memory was 88.1 MB in the beginning and 132.1 MB in the end (delta: 44.0 MB). Free memory was 59.7 MB in the beginning and 108.7 MB in the end (delta: -48.9 MB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8846.10 ms. Allocated memory was 132.1 MB in the beginning and 159.4 MB in the end (delta: 27.3 MB). Free memory was 108.7 MB in the beginning and 92.2 MB in the end (delta: 16.5 MB). Peak memory consumption was 93.5 MB. Max. memory is 16.1 GB. * Witness Printer took 142.01 ms. Allocated memory is still 159.4 MB. Free memory was 92.2 MB in the beginning and 85.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold - InvariantResult [Line: 102]: Loop Invariant Derived loop invariant: ((main__t < main__tagbuf_len && !(__VERIFIER_assert__cond == 0)) && 1 <= main__t) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((main__t < main__tagbuf_len && (((((!(__VERIFIER_assert__cond == 0) || (0 <= main__tagbuf_len && main__t == 0)) && 0 <= main__t) && 0 < main__tagbuf_len) && main__t <= 1) || (((!(__VERIFIER_assert__cond == 0) || (0 <= main__tagbuf_len && main__t == 0)) && 0 <= main__t) && !(__VERIFIER_assert__cond == 0)))) && 1 <= __VERIFIER_assert__cond) || (((!(main__t == main__tagbuf_len) && 0 < main__tagbuf_len) && (((((!(__VERIFIER_assert__cond == 0) || (0 <= main__tagbuf_len && main__t == 0)) && 0 <= main__t) && 0 < main__tagbuf_len) && main__t <= 1) || (((!(__VERIFIER_assert__cond == 0) || (0 <= main__tagbuf_len && main__t == 0)) && 0 <= main__t) && !(__VERIFIER_assert__cond == 0)))) && main__t <= 1) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 283]: Loop Invariant Derived loop invariant: ((((((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && main__t == 0) || (((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && !(__VERIFIER_assert__cond == 0))) && 0 < main__tagbuf_len) && main__t == 0) || ((main__t < main__tagbuf_len && ((((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && main__t == 0) || (((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && !(__VERIFIER_assert__cond == 0)))) && 1 <= __VERIFIER_assert__cond) - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: ((!(__VERIFIER_assert__cond == 0) && 1 <= main__t) && main__t <= main__tagbuf_len) && !(__VERIFIER_assert__cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 88 locations, 17 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.4s, OverallIterations: 23, TraceHistogramMax: 2, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 952 SDtfs, 1552 SDslu, 1428 SDs, 0 SdLazy, 1700 SolverSat, 174 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred 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: 0.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 335 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 19 NumberOfFragments, 240 HoareAnnotationTreeSize, 6 FomulaSimplifications, 618521 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 6 FomulaSimplificationsInter, 114567 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 356 NumberOfCodeBlocks, 356 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 331 ConstructedInterpolants, 0 QuantifiedInterpolants, 18922 SizeOfPredicates, 8 NumberOfNonLiveVariables, 237 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 25 InterpolantComputations, 21 PerfectInterpolantSequences, 4/16 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...