./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_93041010-ad13-4fca-8b0f-edfd07a843f1/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_93041010-ad13-4fca-8b0f-edfd07a843f1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_93041010-ad13-4fca-8b0f-edfd07a843f1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_93041010-ad13-4fca-8b0f-edfd07a843f1/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_93041010-ad13-4fca-8b0f-edfd07a843f1/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_93041010-ad13-4fca-8b0f-edfd07a843f1/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 [2020-11-29 22:51:46,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:51:46,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:51:46,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:51:46,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:51:46,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:51:46,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:51:46,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:51:46,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:51:46,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:51:46,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:51:46,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:51:46,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:51:46,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:51:46,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:51:46,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:51:46,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:51:46,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:51:46,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:51:46,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:51:46,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:51:46,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:51:46,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:51:46,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:51:46,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:51:46,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:51:46,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:51:46,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:51:46,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:51:46,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:51:46,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:51:46,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:51:46,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:51:46,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:51:46,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:51:46,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:51:46,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:51:46,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:51:46,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:51:46,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:51:46,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:51:46,380 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_93041010-ad13-4fca-8b0f-edfd07a843f1/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 22:51:46,427 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:51:46,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:51:46,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:51:46,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:51:46,430 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:51:46,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:51:46,431 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:51:46,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:51:46,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:51:46,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:51:46,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:51:46,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:51:46,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:51:46,434 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:51:46,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:51:46,435 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:51:46,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:51:46,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:51:46,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:51:46,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:51:46,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:51:46,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:51:46,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:51:46,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:51:46,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:51:46,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:51:46,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:51:46,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:51:46,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:51:46,439 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_93041010-ad13-4fca-8b0f-edfd07a843f1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_93041010-ad13-4fca-8b0f-edfd07a843f1/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef15c4790969d8e640b2241771e44174daa41407 [2020-11-29 22:51:46,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:51:46,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:51:46,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:51:46,856 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:51:46,857 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:51:46,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_93041010-ad13-4fca-8b0f-edfd07a843f1/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-11-29 22:51:46,975 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_93041010-ad13-4fca-8b0f-edfd07a843f1/bin/uautomizer/data/5e07f46fc/52134dd4f3fa49f4b4fe4d45477c1646/FLAG57f50181d [2020-11-29 22:51:47,703 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:51:47,704 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_93041010-ad13-4fca-8b0f-edfd07a843f1/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-11-29 22:51:47,723 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_93041010-ad13-4fca-8b0f-edfd07a843f1/bin/uautomizer/data/5e07f46fc/52134dd4f3fa49f4b4fe4d45477c1646/FLAG57f50181d [2020-11-29 22:51:48,009 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_93041010-ad13-4fca-8b0f-edfd07a843f1/bin/uautomizer/data/5e07f46fc/52134dd4f3fa49f4b4fe4d45477c1646 [2020-11-29 22:51:48,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:51:48,016 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:51:48,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:51:48,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:51:48,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:51:48,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:51:48" (1/1) ... [2020-11-29 22:51:48,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60962368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:48, skipping insertion in model container [2020-11-29 22:51:48,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:51:48" (1/1) ... [2020-11-29 22:51:48,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:51:48,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:51:48,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:51:48,469 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:51:48,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:51:48,590 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:51:48,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:48 WrapperNode [2020-11-29 22:51:48,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:51:48,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:51:48,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:51:48,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:51:48,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:48" (1/1) ... [2020-11-29 22:51:48,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:48" (1/1) ... [2020-11-29 22:51:48,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:51:48,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:51:48,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:51:48,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:51:48,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:48" (1/1) ... [2020-11-29 22:51:48,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:48" (1/1) ... [2020-11-29 22:51:48,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:48" (1/1) ... [2020-11-29 22:51:48,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:48" (1/1) ... [2020-11-29 22:51:48,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:48" (1/1) ... [2020-11-29 22:51:48,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:48" (1/1) ... [2020-11-29 22:51:48,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:48" (1/1) ... [2020-11-29 22:51:48,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:51:48,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:51:48,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:51:48,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:51:48,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93041010-ad13-4fca-8b0f-edfd07a843f1/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 [2020-11-29 22:51:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:51:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:51:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:51:48,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:51:49,697 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:51:49,697 INFO L298 CfgBuilder]: Removed 38 assume(true) statements. [2020-11-29 22:51:49,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:51:49 BoogieIcfgContainer [2020-11-29 22:51:49,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:51:49,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:51:49,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:51:49,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:51:49,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:51:48" (1/3) ... [2020-11-29 22:51:49,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3d94dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:51:49, skipping insertion in model container [2020-11-29 22:51:49,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:48" (2/3) ... [2020-11-29 22:51:49,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3d94dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:51:49, skipping insertion in model container [2020-11-29 22:51:49,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:51:49" (3/3) ... [2020-11-29 22:51:49,714 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+nlh-reducer.c [2020-11-29 22:51:49,729 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:51:49,735 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-11-29 22:51:49,750 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-11-29 22:51:49,796 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:51:49,796 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:51:49,796 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:51:49,796 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:51:49,797 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:51:49,797 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:51:49,797 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:51:49,797 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:51:49,835 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-11-29 22:51:49,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 22:51:49,842 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:49,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:49,846 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]=== [2020-11-29 22:51:49,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:49,854 INFO L82 PathProgramCache]: Analyzing trace with hash 124710446, now seen corresponding path program 1 times [2020-11-29 22:51:49,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:49,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563371198] [2020-11-29 22:51:49,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:50,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:50,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563371198] [2020-11-29 22:51:50,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:50,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:51:50,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088271821] [2020-11-29 22:51:50,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:51:50,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:50,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:51:50,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:51:50,246 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-11-29 22:51:50,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:50,696 INFO L93 Difference]: Finished difference Result 142 states and 183 transitions. [2020-11-29 22:51:50,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:51:50,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 22:51:50,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:50,709 INFO L225 Difference]: With dead ends: 142 [2020-11-29 22:51:50,709 INFO L226 Difference]: Without dead ends: 109 [2020-11-29 22:51:50,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:51:50,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-29 22:51:50,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 65. [2020-11-29 22:51:50,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-29 22:51:50,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-11-29 22:51:50,762 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 8 [2020-11-29 22:51:50,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:50,763 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-11-29 22:51:50,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:51:50,763 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-11-29 22:51:50,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 22:51:50,764 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:50,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:50,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:51:50,765 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]=== [2020-11-29 22:51:50,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:50,766 INFO L82 PathProgramCache]: Analyzing trace with hash 120336139, now seen corresponding path program 1 times [2020-11-29 22:51:50,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:50,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41164542] [2020-11-29 22:51:50,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:50,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:50,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41164542] [2020-11-29 22:51:50,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:50,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:51:50,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829494789] [2020-11-29 22:51:50,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:51:50,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:50,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:51:50,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:51:50,859 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 4 states. [2020-11-29 22:51:51,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:51,048 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-11-29 22:51:51,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:51:51,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 22:51:51,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:51,052 INFO L225 Difference]: With dead ends: 65 [2020-11-29 22:51:51,052 INFO L226 Difference]: Without dead ends: 63 [2020-11-29 22:51:51,054 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 [2020-11-29 22:51:51,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-29 22:51:51,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-29 22:51:51,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-29 22:51:51,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-11-29 22:51:51,071 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 8 [2020-11-29 22:51:51,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:51,072 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-11-29 22:51:51,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:51:51,073 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-11-29 22:51:51,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 22:51:51,075 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:51,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:51,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:51:51,076 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]=== [2020-11-29 22:51:51,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:51,078 INFO L82 PathProgramCache]: Analyzing trace with hash -564540945, now seen corresponding path program 1 times [2020-11-29 22:51:51,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:51,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170615368] [2020-11-29 22:51:51,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:51,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:51,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170615368] [2020-11-29 22:51:51,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:51,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:51:51,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553521116] [2020-11-29 22:51:51,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:51:51,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:51,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:51:51,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:51:51,209 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 4 states. [2020-11-29 22:51:51,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:51,402 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-11-29 22:51:51,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:51:51,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-29 22:51:51,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:51,405 INFO L225 Difference]: With dead ends: 69 [2020-11-29 22:51:51,405 INFO L226 Difference]: Without dead ends: 67 [2020-11-29 22:51:51,406 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 [2020-11-29 22:51:51,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-29 22:51:51,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-11-29 22:51:51,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-29 22:51:51,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-11-29 22:51:51,415 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 9 [2020-11-29 22:51:51,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:51,416 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-11-29 22:51:51,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:51:51,416 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-11-29 22:51:51,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:51:51,423 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:51,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:51,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 22:51:51,423 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]=== [2020-11-29 22:51:51,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:51,424 INFO L82 PathProgramCache]: Analyzing trace with hash 108108288, now seen corresponding path program 1 times [2020-11-29 22:51:51,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:51,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295094395] [2020-11-29 22:51:51,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:51,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295094395] [2020-11-29 22:51:51,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:51,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:51:51,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444586827] [2020-11-29 22:51:51,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:51:51,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:51,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:51:51,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:51:51,554 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 5 states. [2020-11-29 22:51:51,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:51,769 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-11-29 22:51:51,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:51:51,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-29 22:51:51,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:51,771 INFO L225 Difference]: With dead ends: 67 [2020-11-29 22:51:51,771 INFO L226 Difference]: Without dead ends: 65 [2020-11-29 22:51:51,772 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 [2020-11-29 22:51:51,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-29 22:51:51,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-11-29 22:51:51,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-29 22:51:51,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-11-29 22:51:51,781 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 11 [2020-11-29 22:51:51,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:51,781 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-11-29 22:51:51,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:51:51,781 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-11-29 22:51:51,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:51:51,782 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:51,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:51,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 22:51:51,783 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]=== [2020-11-29 22:51:51,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:51,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1357780173, now seen corresponding path program 1 times [2020-11-29 22:51:51,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:51,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732550131] [2020-11-29 22:51:51,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:51,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732550131] [2020-11-29 22:51:51,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:51,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:51:51,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116072095] [2020-11-29 22:51:51,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:51:51,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:51,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:51:51,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:51:51,885 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2020-11-29 22:51:52,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:52,122 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-11-29 22:51:52,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:51:52,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-29 22:51:52,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:52,124 INFO L225 Difference]: With dead ends: 65 [2020-11-29 22:51:52,124 INFO L226 Difference]: Without dead ends: 63 [2020-11-29 22:51:52,125 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 [2020-11-29 22:51:52,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-29 22:51:52,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-11-29 22:51:52,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-29 22:51:52,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-11-29 22:51:52,136 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 11 [2020-11-29 22:51:52,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:52,137 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-11-29 22:51:52,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:51:52,137 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-11-29 22:51:52,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 22:51:52,140 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:52,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:52,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 22:51:52,140 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]=== [2020-11-29 22:51:52,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:52,141 INFO L82 PathProgramCache]: Analyzing trace with hash -942992459, now seen corresponding path program 1 times [2020-11-29 22:51:52,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:52,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132036396] [2020-11-29 22:51:52,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:52,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132036396] [2020-11-29 22:51:52,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:52,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:51:52,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214645931] [2020-11-29 22:51:52,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:51:52,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:52,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:51:52,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:51:52,239 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 5 states. [2020-11-29 22:51:52,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:52,590 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2020-11-29 22:51:52,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:51:52,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-29 22:51:52,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:52,592 INFO L225 Difference]: With dead ends: 108 [2020-11-29 22:51:52,592 INFO L226 Difference]: Without dead ends: 106 [2020-11-29 22:51:52,593 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 [2020-11-29 22:51:52,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-29 22:51:52,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 60. [2020-11-29 22:51:52,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-29 22:51:52,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-11-29 22:51:52,601 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 12 [2020-11-29 22:51:52,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:52,601 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-11-29 22:51:52,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:51:52,601 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-11-29 22:51:52,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 22:51:52,602 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:52,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:52,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 22:51:52,603 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]=== [2020-11-29 22:51:52,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:52,604 INFO L82 PathProgramCache]: Analyzing trace with hash -943604167, now seen corresponding path program 1 times [2020-11-29 22:51:52,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:52,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540159835] [2020-11-29 22:51:52,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:52,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540159835] [2020-11-29 22:51:52,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:52,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:51:52,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822286853] [2020-11-29 22:51:52,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:51:52,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:52,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:51:52,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:51:52,677 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 4 states. [2020-11-29 22:51:52,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:52,763 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-11-29 22:51:52,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:51:52,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 22:51:52,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:52,765 INFO L225 Difference]: With dead ends: 61 [2020-11-29 22:51:52,765 INFO L226 Difference]: Without dead ends: 57 [2020-11-29 22:51:52,765 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 [2020-11-29 22:51:52,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-29 22:51:52,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-11-29 22:51:52,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 22:51:52,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-11-29 22:51:52,780 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 12 [2020-11-29 22:51:52,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:52,784 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-11-29 22:51:52,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:51:52,785 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-11-29 22:51:52,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 22:51:52,786 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:52,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:52,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 22:51:52,786 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]=== [2020-11-29 22:51:52,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:52,787 INFO L82 PathProgramCache]: Analyzing trace with hash 858493661, now seen corresponding path program 1 times [2020-11-29 22:51:52,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:52,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189763707] [2020-11-29 22:51:52,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:52,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:52,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189763707] [2020-11-29 22:51:52,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:52,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:51:52,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082554232] [2020-11-29 22:51:52,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:51:52,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:52,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:51:52,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:51:52,840 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 4 states. [2020-11-29 22:51:52,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:52,934 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2020-11-29 22:51:52,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:51:52,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 22:51:52,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:52,936 INFO L225 Difference]: With dead ends: 57 [2020-11-29 22:51:52,936 INFO L226 Difference]: Without dead ends: 53 [2020-11-29 22:51:52,936 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 [2020-11-29 22:51:52,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-29 22:51:52,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-11-29 22:51:52,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-29 22:51:52,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-11-29 22:51:52,953 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 12 [2020-11-29 22:51:52,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:52,953 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-11-29 22:51:52,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:51:52,955 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-11-29 22:51:52,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 22:51:52,956 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:52,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:52,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 22:51:52,960 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]=== [2020-11-29 22:51:52,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:52,961 INFO L82 PathProgramCache]: Analyzing trace with hash 832011069, now seen corresponding path program 1 times [2020-11-29 22:51:52,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:52,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217613206] [2020-11-29 22:51:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:53,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:53,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217613206] [2020-11-29 22:51:53,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:53,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 22:51:53,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525658775] [2020-11-29 22:51:53,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:51:53,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:53,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:51:53,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:51:53,123 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 6 states. [2020-11-29 22:51:53,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:53,348 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2020-11-29 22:51:53,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:51:53,349 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-29 22:51:53,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:53,350 INFO L225 Difference]: With dead ends: 118 [2020-11-29 22:51:53,351 INFO L226 Difference]: Without dead ends: 116 [2020-11-29 22:51:53,351 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 [2020-11-29 22:51:53,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-29 22:51:53,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 57. [2020-11-29 22:51:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-29 22:51:53,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2020-11-29 22:51:53,359 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 13 [2020-11-29 22:51:53,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:53,359 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2020-11-29 22:51:53,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:51:53,359 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2020-11-29 22:51:53,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 22:51:53,360 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:53,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:53,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 22:51:53,361 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]=== [2020-11-29 22:51:53,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:53,361 INFO L82 PathProgramCache]: Analyzing trace with hash 866403148, now seen corresponding path program 1 times [2020-11-29 22:51:53,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:53,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665195596] [2020-11-29 22:51:53,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:53,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:53,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665195596] [2020-11-29 22:51:53,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:53,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:51:53,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935531007] [2020-11-29 22:51:53,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:51:53,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:53,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:51:53,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:51:53,429 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 5 states. [2020-11-29 22:51:53,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:53,573 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-11-29 22:51:53,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:51:53,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-29 22:51:53,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:53,575 INFO L225 Difference]: With dead ends: 57 [2020-11-29 22:51:53,576 INFO L226 Difference]: Without dead ends: 55 [2020-11-29 22:51:53,576 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 [2020-11-29 22:51:53,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-29 22:51:53,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-29 22:51:53,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-29 22:51:53,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-11-29 22:51:53,583 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 13 [2020-11-29 22:51:53,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:53,583 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-11-29 22:51:53,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:51:53,584 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-11-29 22:51:53,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 22:51:53,585 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:53,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:53,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 22:51:53,589 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]=== [2020-11-29 22:51:53,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:53,589 INFO L82 PathProgramCache]: Analyzing trace with hash 864309836, now seen corresponding path program 1 times [2020-11-29 22:51:53,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:53,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940778792] [2020-11-29 22:51:53,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:53,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940778792] [2020-11-29 22:51:53,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:53,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:51:53,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716410814] [2020-11-29 22:51:53,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:51:53,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:53,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:51:53,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:51:53,658 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 5 states. [2020-11-29 22:51:53,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:53,821 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2020-11-29 22:51:53,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:51:53,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-29 22:51:53,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:53,823 INFO L225 Difference]: With dead ends: 70 [2020-11-29 22:51:53,823 INFO L226 Difference]: Without dead ends: 68 [2020-11-29 22:51:53,823 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 [2020-11-29 22:51:53,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-29 22:51:53,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 53. [2020-11-29 22:51:53,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-29 22:51:53,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-11-29 22:51:53,829 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 13 [2020-11-29 22:51:53,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:53,830 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-11-29 22:51:53,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:51:53,830 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-11-29 22:51:53,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 22:51:53,831 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:53,831 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:53,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 22:51:53,832 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]=== [2020-11-29 22:51:53,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:53,833 INFO L82 PathProgramCache]: Analyzing trace with hash 14757244, now seen corresponding path program 1 times [2020-11-29 22:51:53,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:53,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633265800] [2020-11-29 22:51:53,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:54,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:54,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633265800] [2020-11-29 22:51:54,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:54,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 22:51:54,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657395642] [2020-11-29 22:51:54,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:51:54,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:54,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:51:54,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:51:54,024 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 6 states. [2020-11-29 22:51:54,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:54,195 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2020-11-29 22:51:54,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 22:51:54,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-29 22:51:54,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:54,198 INFO L225 Difference]: With dead ends: 78 [2020-11-29 22:51:54,198 INFO L226 Difference]: Without dead ends: 76 [2020-11-29 22:51:54,199 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 [2020-11-29 22:51:54,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-29 22:51:54,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 53. [2020-11-29 22:51:54,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-29 22:51:54,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-11-29 22:51:54,205 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 14 [2020-11-29 22:51:54,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:54,206 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-11-29 22:51:54,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:51:54,206 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-11-29 22:51:54,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 22:51:54,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:54,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:54,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 22:51:54,207 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]=== [2020-11-29 22:51:54,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:54,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1088699972, now seen corresponding path program 1 times [2020-11-29 22:51:54,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:54,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726715433] [2020-11-29 22:51:54,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:54,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:54,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726715433] [2020-11-29 22:51:54,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:54,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 22:51:54,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678168949] [2020-11-29 22:51:54,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:51:54,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:54,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:51:54,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:51:54,371 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 6 states. [2020-11-29 22:51:54,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:54,515 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2020-11-29 22:51:54,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:51:54,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-29 22:51:54,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:54,517 INFO L225 Difference]: With dead ends: 76 [2020-11-29 22:51:54,518 INFO L226 Difference]: Without dead ends: 72 [2020-11-29 22:51:54,518 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 [2020-11-29 22:51:54,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-29 22:51:54,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 59. [2020-11-29 22:51:54,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-29 22:51:54,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2020-11-29 22:51:54,525 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 14 [2020-11-29 22:51:54,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:54,525 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2020-11-29 22:51:54,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:51:54,525 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2020-11-29 22:51:54,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 22:51:54,526 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:54,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:54,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 22:51:54,527 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]=== [2020-11-29 22:51:54,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:54,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1089262030, now seen corresponding path program 1 times [2020-11-29 22:51:54,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:54,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572386562] [2020-11-29 22:51:54,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:54,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:54,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572386562] [2020-11-29 22:51:54,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:54,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:51:54,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52446807] [2020-11-29 22:51:54,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:51:54,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:54,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:51:54,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:51:54,602 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 5 states. [2020-11-29 22:51:54,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:54,780 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2020-11-29 22:51:54,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:51:54,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-29 22:51:54,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:54,781 INFO L225 Difference]: With dead ends: 79 [2020-11-29 22:51:54,782 INFO L226 Difference]: Without dead ends: 77 [2020-11-29 22:51:54,783 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 [2020-11-29 22:51:54,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-29 22:51:54,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 57. [2020-11-29 22:51:54,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-29 22:51:54,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-11-29 22:51:54,789 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 14 [2020-11-29 22:51:54,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:54,789 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-11-29 22:51:54,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:51:54,790 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-11-29 22:51:54,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 22:51:54,790 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:54,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:54,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 22:51:54,791 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]=== [2020-11-29 22:51:54,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:54,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1023807232, now seen corresponding path program 1 times [2020-11-29 22:51:54,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:54,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582292435] [2020-11-29 22:51:54,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:54,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:54,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582292435] [2020-11-29 22:51:54,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:54,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 22:51:54,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861775882] [2020-11-29 22:51:54,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:51:54,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:54,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:51:54,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:51:54,978 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 6 states. [2020-11-29 22:51:55,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:55,147 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2020-11-29 22:51:55,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:51:55,148 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-29 22:51:55,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:55,149 INFO L225 Difference]: With dead ends: 82 [2020-11-29 22:51:55,149 INFO L226 Difference]: Without dead ends: 80 [2020-11-29 22:51:55,149 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 [2020-11-29 22:51:55,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-29 22:51:55,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2020-11-29 22:51:55,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-29 22:51:55,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-11-29 22:51:55,155 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 14 [2020-11-29 22:51:55,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:55,156 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-11-29 22:51:55,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:51:55,156 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-11-29 22:51:55,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 22:51:55,166 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:55,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:55,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 22:51:55,167 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]=== [2020-11-29 22:51:55,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:55,171 INFO L82 PathProgramCache]: Analyzing trace with hash -592609303, now seen corresponding path program 1 times [2020-11-29 22:51:55,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:55,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162049636] [2020-11-29 22:51:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:55,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162049636] [2020-11-29 22:51:55,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:55,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 22:51:55,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867416228] [2020-11-29 22:51:55,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:51:55,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:55,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:51:55,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:51:55,345 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 6 states. [2020-11-29 22:51:55,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:55,513 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2020-11-29 22:51:55,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:51:55,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-29 22:51:55,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:55,515 INFO L225 Difference]: With dead ends: 87 [2020-11-29 22:51:55,515 INFO L226 Difference]: Without dead ends: 85 [2020-11-29 22:51:55,515 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 [2020-11-29 22:51:55,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-29 22:51:55,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 63. [2020-11-29 22:51:55,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-29 22:51:55,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2020-11-29 22:51:55,522 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 15 [2020-11-29 22:51:55,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:55,523 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2020-11-29 22:51:55,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:51:55,523 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2020-11-29 22:51:55,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 22:51:55,524 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:55,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:55,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 22:51:55,524 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]=== [2020-11-29 22:51:55,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:55,525 INFO L82 PathProgramCache]: Analyzing trace with hash 331428451, now seen corresponding path program 1 times [2020-11-29 22:51:55,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:55,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992365894] [2020-11-29 22:51:55,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:55,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:55,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992365894] [2020-11-29 22:51:55,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:55,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:51:55,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919859649] [2020-11-29 22:51:55,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:51:55,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:55,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:51:55,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:51:55,577 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 4 states. [2020-11-29 22:51:55,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:55,630 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2020-11-29 22:51:55,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:51:55,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-29 22:51:55,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:55,631 INFO L225 Difference]: With dead ends: 63 [2020-11-29 22:51:55,631 INFO L226 Difference]: Without dead ends: 61 [2020-11-29 22:51:55,632 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 [2020-11-29 22:51:55,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-29 22:51:55,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-11-29 22:51:55,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-29 22:51:55,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-11-29 22:51:55,637 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 16 [2020-11-29 22:51:55,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:55,638 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-11-29 22:51:55,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:51:55,638 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-11-29 22:51:55,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 22:51:55,639 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:55,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:55,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 22:51:55,639 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]=== [2020-11-29 22:51:55,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:55,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1684353502, now seen corresponding path program 1 times [2020-11-29 22:51:55,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:55,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115185714] [2020-11-29 22:51:55,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:55,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115185714] [2020-11-29 22:51:55,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:55,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:51:55,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575077053] [2020-11-29 22:51:55,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:51:55,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:55,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:51:55,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:51:55,726 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 4 states. [2020-11-29 22:51:55,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:55,807 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2020-11-29 22:51:55,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:51:55,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-29 22:51:55,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:55,811 INFO L225 Difference]: With dead ends: 61 [2020-11-29 22:51:55,811 INFO L226 Difference]: Without dead ends: 57 [2020-11-29 22:51:55,811 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 [2020-11-29 22:51:55,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-29 22:51:55,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-11-29 22:51:55,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-29 22:51:55,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-11-29 22:51:55,821 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 17 [2020-11-29 22:51:55,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:55,821 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-11-29 22:51:55,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:51:55,821 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-11-29 22:51:55,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 22:51:55,822 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:55,822 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:55,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-29 22:51:55,823 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]=== [2020-11-29 22:51:55,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:55,823 INFO L82 PathProgramCache]: Analyzing trace with hash -2089868866, now seen corresponding path program 1 times [2020-11-29 22:51:55,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:55,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937150750] [2020-11-29 22:51:55,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:55,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937150750] [2020-11-29 22:51:55,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717591790] [2020-11-29 22:51:55,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93041010-ad13-4fca-8b0f-edfd07a843f1/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 [2020-11-29 22:51:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:56,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 22:51:56,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:51:56,493 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 22:51:56,500 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 22:51:56,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:56,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:51:56,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2020-11-29 22:51:56,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120928449] [2020-11-29 22:51:56,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 22:51:56,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:56,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 22:51:56,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:51:56,542 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 13 states. [2020-11-29 22:51:56,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:56,987 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2020-11-29 22:51:56,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 22:51:56,987 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-11-29 22:51:56,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:56,988 INFO L225 Difference]: With dead ends: 104 [2020-11-29 22:51:56,989 INFO L226 Difference]: Without dead ends: 102 [2020-11-29 22:51:56,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-11-29 22:51:56,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-29 22:51:56,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 53. [2020-11-29 22:51:56,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-29 22:51:56,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-11-29 22:51:56,999 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 18 [2020-11-29 22:51:56,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:56,999 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-11-29 22:51:56,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 22:51:57,000 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-11-29 22:51:57,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 22:51:57,007 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:57,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:57,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:51:57,209 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]=== [2020-11-29 22:51:57,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:57,210 INFO L82 PathProgramCache]: Analyzing trace with hash 694227744, now seen corresponding path program 1 times [2020-11-29 22:51:57,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:57,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30240160] [2020-11-29 22:51:57,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:57,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:57,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30240160] [2020-11-29 22:51:57,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:57,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 22:51:57,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766809658] [2020-11-29 22:51:57,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:51:57,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:57,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:51:57,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:51:57,342 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 6 states. [2020-11-29 22:51:57,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:57,501 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-11-29 22:51:57,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:51:57,502 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-29 22:51:57,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:57,503 INFO L225 Difference]: With dead ends: 68 [2020-11-29 22:51:57,503 INFO L226 Difference]: Without dead ends: 66 [2020-11-29 22:51:57,503 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 [2020-11-29 22:51:57,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-29 22:51:57,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 48. [2020-11-29 22:51:57,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-29 22:51:57,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-11-29 22:51:57,525 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 18 [2020-11-29 22:51:57,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:57,526 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-11-29 22:51:57,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:51:57,526 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-11-29 22:51:57,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 22:51:57,527 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:57,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:57,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-29 22:51:57,527 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]=== [2020-11-29 22:51:57,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:57,528 INFO L82 PathProgramCache]: Analyzing trace with hash 2065566423, now seen corresponding path program 1 times [2020-11-29 22:51:57,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:57,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674256058] [2020-11-29 22:51:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:57,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:57,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674256058] [2020-11-29 22:51:57,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:57,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 22:51:57,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543815175] [2020-11-29 22:51:57,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:51:57,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:57,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:51:57,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:51:57,637 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 6 states. [2020-11-29 22:51:57,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:57,749 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2020-11-29 22:51:57,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:51:57,749 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-29 22:51:57,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:57,750 INFO L225 Difference]: With dead ends: 48 [2020-11-29 22:51:57,750 INFO L226 Difference]: Without dead ends: 44 [2020-11-29 22:51:57,751 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 [2020-11-29 22:51:57,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-29 22:51:57,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-11-29 22:51:57,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-29 22:51:57,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-11-29 22:51:57,756 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 19 [2020-11-29 22:51:57,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:57,757 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-11-29 22:51:57,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:51:57,757 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-11-29 22:51:57,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 22:51:57,757 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:57,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:57,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-29 22:51:57,758 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]=== [2020-11-29 22:51:57,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:57,758 INFO L82 PathProgramCache]: Analyzing trace with hash 2000673683, now seen corresponding path program 1 times [2020-11-29 22:51:57,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:57,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903575731] [2020-11-29 22:51:57,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:57,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:57,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903575731] [2020-11-29 22:51:57,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:57,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 22:51:57,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330218471] [2020-11-29 22:51:57,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:51:57,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:57,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:51:57,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:51:57,871 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 6 states. [2020-11-29 22:51:58,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:58,012 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-11-29 22:51:58,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:51:58,020 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-29 22:51:58,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:58,020 INFO L225 Difference]: With dead ends: 51 [2020-11-29 22:51:58,020 INFO L226 Difference]: Without dead ends: 20 [2020-11-29 22:51:58,021 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 [2020-11-29 22:51:58,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-29 22:51:58,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-29 22:51:58,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 22:51:58,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-11-29 22:51:58,024 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 19 [2020-11-29 22:51:58,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:58,024 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-11-29 22:51:58,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:51:58,024 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-11-29 22:51:58,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 22:51:58,025 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:58,025 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:58,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-29 22:51:58,025 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]=== [2020-11-29 22:51:58,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:58,026 INFO L82 PathProgramCache]: Analyzing trace with hash -369207525, now seen corresponding path program 1 times [2020-11-29 22:51:58,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:58,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017437550] [2020-11-29 22:51:58,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:58,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017437550] [2020-11-29 22:51:58,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896375859] [2020-11-29 22:51:58,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93041010-ad13-4fca-8b0f-edfd07a843f1/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 [2020-11-29 22:51:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:58,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 22:51:58,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:51:58,394 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 22:51:58,407 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 22:51:58,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:58,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:51:58,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2020-11-29 22:51:58,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163484311] [2020-11-29 22:51:58,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 22:51:58,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:58,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 22:51:58,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:51:58,452 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 13 states. [2020-11-29 22:51:58,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:58,636 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-11-29 22:51:58,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 22:51:58,637 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 19 [2020-11-29 22:51:58,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:58,637 INFO L225 Difference]: With dead ends: 31 [2020-11-29 22:51:58,637 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 22:51:58,638 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 [2020-11-29 22:51:58,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 22:51:58,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 22:51:58,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 22:51:58,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 22:51:58,638 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-29 22:51:58,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:58,639 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:51:58,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 22:51:58,639 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:51:58,639 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 22:51:58,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-29 22:51:58,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 22:51:58,952 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-11-29 22:51:59,378 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 15 [2020-11-29 22:51:59,656 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2020-11-29 22:52:00,020 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 25 [2020-11-29 22:52:00,203 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 15 [2020-11-29 22:52:00,205 INFO L274 CegarLoopResult]: For program point L349(lines 349 358) no Hoare annotation was computed. [2020-11-29 22:52:00,206 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))) [2020-11-29 22:52:00,206 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,206 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,206 INFO L274 CegarLoopResult]: For program point L102(lines 102 252) no Hoare annotation was computed. [2020-11-29 22:52:00,206 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 22:52:00,206 INFO L274 CegarLoopResult]: For program point L20(lines 20 374) no Hoare annotation was computed. [2020-11-29 22:52:00,206 INFO L274 CegarLoopResult]: For program point L235(lines 235 243) no Hoare annotation was computed. [2020-11-29 22:52:00,206 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,206 INFO L274 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,206 INFO L274 CegarLoopResult]: For program point L4-2(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,207 INFO L274 CegarLoopResult]: For program point L4-3(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,207 INFO L274 CegarLoopResult]: For program point L4-4(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,207 INFO L274 CegarLoopResult]: For program point L4-5(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,207 INFO L274 CegarLoopResult]: For program point L4-6(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,207 INFO L274 CegarLoopResult]: For program point L4-7(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,207 INFO L274 CegarLoopResult]: For program point L4-8(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,207 INFO L274 CegarLoopResult]: For program point L4-9(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,207 INFO L274 CegarLoopResult]: For program point L4-10(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,207 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,207 INFO L274 CegarLoopResult]: For program point L4-11(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,207 INFO L274 CegarLoopResult]: For program point L153(lines 153 161) no Hoare annotation was computed. [2020-11-29 22:52:00,208 INFO L274 CegarLoopResult]: For program point L4-12(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,208 INFO L274 CegarLoopResult]: For program point L4-13(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,208 INFO L274 CegarLoopResult]: For program point L54(lines 54 254) no Hoare annotation was computed. [2020-11-29 22:52:00,208 INFO L274 CegarLoopResult]: For program point L4-14(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,208 INFO L274 CegarLoopResult]: For program point L4-15(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,208 INFO L274 CegarLoopResult]: For program point L4-16(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,208 INFO L274 CegarLoopResult]: For program point L4-17(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,208 INFO L274 CegarLoopResult]: For program point L4-18(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,208 INFO L274 CegarLoopResult]: For program point L4-19(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,208 INFO L274 CegarLoopResult]: For program point L4-20(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,208 INFO L274 CegarLoopResult]: For program point L4-21(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,208 INFO L274 CegarLoopResult]: For program point L4-22(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,209 INFO L274 CegarLoopResult]: For program point L4-23(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,209 INFO L274 CegarLoopResult]: For program point L4-24(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,209 INFO L274 CegarLoopResult]: For program point L4-25(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,209 INFO L274 CegarLoopResult]: For program point L4-26(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,209 INFO L274 CegarLoopResult]: For program point L4-27(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,209 INFO L274 CegarLoopResult]: For program point L4-28(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,209 INFO L274 CegarLoopResult]: For program point L71(lines 71 95) no Hoare annotation was computed. [2020-11-29 22:52:00,209 INFO L274 CegarLoopResult]: For program point L4-29(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,209 INFO L274 CegarLoopResult]: For program point L4-30(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,209 INFO L274 CegarLoopResult]: For program point L4-31(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,209 INFO L274 CegarLoopResult]: For program point L4-32(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,210 INFO L274 CegarLoopResult]: For program point L4-33(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,210 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,210 INFO L274 CegarLoopResult]: For program point L187(lines 187 197) no Hoare annotation was computed. [2020-11-29 22:52:00,210 INFO L274 CegarLoopResult]: For program point L337(lines 337 360) no Hoare annotation was computed. [2020-11-29 22:52:00,210 INFO L274 CegarLoopResult]: For program point L106(lines 106 210) no Hoare annotation was computed. [2020-11-29 22:52:00,210 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,210 INFO L274 CegarLoopResult]: For program point L24(lines 24 369) no Hoare annotation was computed. [2020-11-29 22:52:00,210 INFO L274 CegarLoopResult]: For program point L289(lines 289 363) no Hoare annotation was computed. [2020-11-29 22:52:00,210 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 22:52:00,210 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,210 INFO L274 CegarLoopResult]: For program point L223(lines 223 245) no Hoare annotation was computed. [2020-11-29 22:52:00,211 INFO L274 CegarLoopResult]: For program point L141(lines 141 163) no Hoare annotation was computed. [2020-11-29 22:52:00,211 INFO L274 CegarLoopResult]: For program point L42(lines 42 256) no Hoare annotation was computed. [2020-11-29 22:52:00,211 INFO L274 CegarLoopResult]: For program point L125(lines 125 202) no Hoare annotation was computed. [2020-11-29 22:52:00,211 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,211 INFO L277 CegarLoopResult]: At program point L373(lines 15 375) the Hoare annotation is: true [2020-11-29 22:52:00,211 INFO L274 CegarLoopResult]: For program point L175(lines 175 199) no Hoare annotation was computed. [2020-11-29 22:52:00,211 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,211 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))))) [2020-11-29 22:52:00,212 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,212 INFO L274 CegarLoopResult]: For program point L308(lines 308 316) no Hoare annotation was computed. [2020-11-29 22:52:00,212 INFO L274 CegarLoopResult]: For program point L325(lines 325 362) no Hoare annotation was computed. [2020-11-29 22:52:00,212 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,212 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 22:52:00,215 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,215 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,215 INFO L274 CegarLoopResult]: For program point L277(lines 277 364) no Hoare annotation was computed. [2020-11-29 22:52:00,215 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,216 INFO L274 CegarLoopResult]: For program point L113(lines 113 204) no Hoare annotation was computed. [2020-11-29 22:52:00,217 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)))) [2020-11-29 22:52:00,218 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))) [2020-11-29 22:52:00,218 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,218 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,219 INFO L274 CegarLoopResult]: For program point L296(lines 296 318) no Hoare annotation was computed. [2020-11-29 22:52:00,219 INFO L274 CegarLoopResult]: For program point L32(lines 32 368) no Hoare annotation was computed. [2020-11-29 22:52:00,219 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 22:52:00,220 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,220 INFO L274 CegarLoopResult]: For program point L83(lines 83 93) no Hoare annotation was computed. [2020-11-29 22:52:00,220 INFO L277 CegarLoopResult]: At program point L315(lines 32 368) the Hoare annotation is: true [2020-11-29 22:52:00,222 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 22:52:00,223 INFO L274 CegarLoopResult]: For program point L216(lines 216 251) no Hoare annotation was computed. [2020-11-29 22:52:00,223 INFO L274 CegarLoopResult]: For program point L266(lines 266 366) no Hoare annotation was computed. [2020-11-29 22:52:00,223 INFO L274 CegarLoopResult]: For program point L134(lines 134 201) no Hoare annotation was computed. [2020-11-29 22:52:00,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:52:00 BoogieIcfgContainer [2020-11-29 22:52:00,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:52:00,269 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:52:00,269 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:52:00,270 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:52:00,270 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:51:49" (3/4) ... [2020-11-29 22:52:00,274 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 22:52:00,290 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 22:52:00,291 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 22:52:00,291 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:52:00,292 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:52:00,370 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_93041010-ad13-4fca-8b0f-edfd07a843f1/bin/uautomizer/witness.graphml [2020-11-29 22:52:00,371 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:52:00,372 INFO L168 Benchmark]: Toolchain (without parser) took 12357.51 ms. Allocated memory was 138.4 MB in the beginning and 226.5 MB in the end (delta: 88.1 MB). Free memory was 106.8 MB in the beginning and 181.1 MB in the end (delta: -74.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:52:00,372 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 86.0 MB. Free memory is still 43.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:52:00,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 570.13 ms. Allocated memory is still 138.4 MB. Free memory was 106.6 MB in the beginning and 113.2 MB in the end (delta: -6.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:52:00,373 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.37 ms. Allocated memory is still 138.4 MB. Free memory was 113.2 MB in the beginning and 111.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:52:00,374 INFO L168 Benchmark]: Boogie Preprocessor took 44.42 ms. Allocated memory is still 138.4 MB. Free memory was 111.0 MB in the beginning and 109.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:52:00,374 INFO L168 Benchmark]: RCFGBuilder took 974.03 ms. Allocated memory is still 138.4 MB. Free memory was 109.8 MB in the beginning and 83.8 MB in the end (delta: 26.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:52:00,375 INFO L168 Benchmark]: TraceAbstraction took 10565.03 ms. Allocated memory was 138.4 MB in the beginning and 226.5 MB in the end (delta: 88.1 MB). Free memory was 83.8 MB in the beginning and 187.4 MB in the end (delta: -103.6 MB). Peak memory consumption was 100.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:52:00,376 INFO L168 Benchmark]: Witness Printer took 101.77 ms. Allocated memory is still 226.5 MB. Free memory was 187.4 MB in the beginning and 181.1 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 22:52:00,378 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 86.0 MB. Free memory is still 43.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 570.13 ms. Allocated memory is still 138.4 MB. Free memory was 106.6 MB in the beginning and 113.2 MB in the end (delta: -6.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.37 ms. Allocated memory is still 138.4 MB. Free memory was 113.2 MB in the beginning and 111.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.42 ms. Allocated memory is still 138.4 MB. Free memory was 111.0 MB in the beginning and 109.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 974.03 ms. Allocated memory is still 138.4 MB. Free memory was 109.8 MB in the beginning and 83.8 MB in the end (delta: 26.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10565.03 ms. Allocated memory was 138.4 MB in the beginning and 226.5 MB in the end (delta: 88.1 MB). Free memory was 83.8 MB in the beginning and 187.4 MB in the end (delta: -103.6 MB). Peak memory consumption was 100.4 MB. Max. memory is 16.1 GB. * Witness Printer took 101.77 ms. Allocated memory is still 226.5 MB. Free memory was 187.4 MB in the beginning and 181.1 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - 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: 9.0s, OverallIterations: 23, TraceHistogramMax: 2, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 952 SDtfs, 1552 SDslu, 1428 SDs, 0 SdLazy, 1700 SolverSat, 174 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2.4s 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, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.7s 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...