./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_10.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_5a50004c-f785-4a63-836f-719c7c46d51a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5a50004c-f785-4a63-836f-719c7c46d51a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5a50004c-f785-4a63-836f-719c7c46d51a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5a50004c-f785-4a63-836f-719c7c46d51a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/locks/test_locks_10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5a50004c-f785-4a63-836f-719c7c46d51a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5a50004c-f785-4a63-836f-719c7c46d51a/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 6423b7e5fbcc52c08e52aff49c79db620dd407c4 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 22:12:22,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:12:22,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:12:22,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:12:22,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:12:22,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:12:22,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:12:22,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:12:22,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:12:22,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:12:22,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:12:22,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:12:22,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:12:22,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:12:22,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:12:22,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:12:22,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:12:22,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:12:22,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:12:22,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:12:22,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:12:22,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:12:22,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:12:22,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:12:22,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:12:22,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:12:22,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:12:22,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:12:22,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:12:22,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:12:22,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:12:22,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:12:22,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:12:22,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:12:22,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:12:22,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:12:22,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:12:22,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:12:22,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:12:22,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:12:22,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:12:22,439 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5a50004c-f785-4a63-836f-719c7c46d51a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 22:12:22,464 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:12:22,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:12:22,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:12:22,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:12:22,466 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:12:22,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:12:22,466 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:12:22,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:12:22,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:12:22,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:12:22,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:12:22,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:12:22,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:12:22,468 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:12:22,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:12:22,468 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:12:22,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:12:22,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:12:22,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:12:22,469 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:12:22,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:12:22,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:12:22,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:12:22,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:12:22,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:12:22,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:12:22,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:12:22,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:12:22,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:12:22,471 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_5a50004c-f785-4a63-836f-719c7c46d51a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5a50004c-f785-4a63-836f-719c7c46d51a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6423b7e5fbcc52c08e52aff49c79db620dd407c4 [2020-11-29 22:12:22,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:12:22,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:12:22,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:12:22,758 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:12:22,759 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:12:22,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5a50004c-f785-4a63-836f-719c7c46d51a/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_10.c [2020-11-29 22:12:22,837 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a50004c-f785-4a63-836f-719c7c46d51a/bin/uautomizer/data/91f96cc8e/2b6f727a5c094702b1fe1353ce0a7c85/FLAG1de5ce76a [2020-11-29 22:12:23,365 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:12:23,366 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5a50004c-f785-4a63-836f-719c7c46d51a/sv-benchmarks/c/locks/test_locks_10.c [2020-11-29 22:12:23,374 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a50004c-f785-4a63-836f-719c7c46d51a/bin/uautomizer/data/91f96cc8e/2b6f727a5c094702b1fe1353ce0a7c85/FLAG1de5ce76a [2020-11-29 22:12:23,721 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5a50004c-f785-4a63-836f-719c7c46d51a/bin/uautomizer/data/91f96cc8e/2b6f727a5c094702b1fe1353ce0a7c85 [2020-11-29 22:12:23,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:12:23,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:12:23,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:12:23,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:12:23,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:12:23,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:12:23" (1/1) ... [2020-11-29 22:12:23,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37fbf2b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:23, skipping insertion in model container [2020-11-29 22:12:23,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:12:23" (1/1) ... [2020-11-29 22:12:23,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:12:23,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:12:23,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:12:23,984 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:12:24,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:12:24,026 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:12:24,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:24 WrapperNode [2020-11-29 22:12:24,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:12:24,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:12:24,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:12:24,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:12:24,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:24" (1/1) ... [2020-11-29 22:12:24,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:24" (1/1) ... [2020-11-29 22:12:24,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:12:24,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:12:24,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:12:24,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:12:24,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:24" (1/1) ... [2020-11-29 22:12:24,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:24" (1/1) ... [2020-11-29 22:12:24,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:24" (1/1) ... [2020-11-29 22:12:24,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:24" (1/1) ... [2020-11-29 22:12:24,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:24" (1/1) ... [2020-11-29 22:12:24,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:24" (1/1) ... [2020-11-29 22:12:24,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:24" (1/1) ... [2020-11-29 22:12:24,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:12:24,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:12:24,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:12:24,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:12:24,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a50004c-f785-4a63-836f-719c7c46d51a/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 22:12:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:12:24,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:12:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:12:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:12:24,737 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:12:24,737 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-29 22:12:24,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:12:24 BoogieIcfgContainer [2020-11-29 22:12:24,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:12:24,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:12:24,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:12:24,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:12:24,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:12:23" (1/3) ... [2020-11-29 22:12:24,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da971e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:12:24, skipping insertion in model container [2020-11-29 22:12:24,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:24" (2/3) ... [2020-11-29 22:12:24,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da971e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:12:24, skipping insertion in model container [2020-11-29 22:12:24,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:12:24" (3/3) ... [2020-11-29 22:12:24,750 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2020-11-29 22:12:24,762 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:12:24,767 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 22:12:24,779 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 22:12:24,811 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:12:24,812 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:12:24,812 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:12:24,812 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:12:24,812 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:12:24,812 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:12:24,812 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:12:24,812 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:12:24,831 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-29 22:12:24,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 22:12:24,837 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:24,838 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 22:12:24,838 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:24,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:24,845 INFO L82 PathProgramCache]: Analyzing trace with hash 153349273, now seen corresponding path program 1 times [2020-11-29 22:12:24,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:24,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925651788] [2020-11-29 22:12:24,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:25,122 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 22:12:25,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925651788] [2020-11-29 22:12:25,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:25,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:25,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781228250] [2020-11-29 22:12:25,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:25,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:25,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:25,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:25,153 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-11-29 22:12:25,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:25,209 INFO L93 Difference]: Finished difference Result 84 states and 146 transitions. [2020-11-29 22:12:25,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:25,211 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-29 22:12:25,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:25,222 INFO L225 Difference]: With dead ends: 84 [2020-11-29 22:12:25,222 INFO L226 Difference]: Without dead ends: 69 [2020-11-29 22:12:25,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:25,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-29 22:12:25,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 47. [2020-11-29 22:12:25,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 22:12:25,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 86 transitions. [2020-11-29 22:12:25,269 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 86 transitions. Word has length 17 [2020-11-29 22:12:25,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:25,269 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 86 transitions. [2020-11-29 22:12:25,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:25,270 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 86 transitions. [2020-11-29 22:12:25,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 22:12:25,271 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:25,271 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 22:12:25,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:12:25,271 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:25,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:25,273 INFO L82 PathProgramCache]: Analyzing trace with hash -433456741, now seen corresponding path program 1 times [2020-11-29 22:12:25,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:25,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626390238] [2020-11-29 22:12:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:25,345 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 22:12:25,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626390238] [2020-11-29 22:12:25,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:25,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:25,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487987984] [2020-11-29 22:12:25,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:25,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:25,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:25,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:25,349 INFO L87 Difference]: Start difference. First operand 47 states and 86 transitions. Second operand 3 states. [2020-11-29 22:12:25,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:25,400 INFO L93 Difference]: Finished difference Result 114 states and 209 transitions. [2020-11-29 22:12:25,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:25,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-29 22:12:25,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:25,403 INFO L225 Difference]: With dead ends: 114 [2020-11-29 22:12:25,403 INFO L226 Difference]: Without dead ends: 69 [2020-11-29 22:12:25,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:25,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-29 22:12:25,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-11-29 22:12:25,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-29 22:12:25,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 122 transitions. [2020-11-29 22:12:25,434 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 122 transitions. Word has length 17 [2020-11-29 22:12:25,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:25,434 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 122 transitions. [2020-11-29 22:12:25,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:25,435 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 122 transitions. [2020-11-29 22:12:25,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 22:12:25,436 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:25,437 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 22:12:25,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:12:25,438 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:25,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:25,441 INFO L82 PathProgramCache]: Analyzing trace with hash 459073515, now seen corresponding path program 1 times [2020-11-29 22:12:25,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:25,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892299077] [2020-11-29 22:12:25,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:25,514 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 22:12:25,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892299077] [2020-11-29 22:12:25,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:25,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:25,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744518897] [2020-11-29 22:12:25,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:25,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:25,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:25,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:25,517 INFO L87 Difference]: Start difference. First operand 67 states and 122 transitions. Second operand 3 states. [2020-11-29 22:12:25,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:25,551 INFO L93 Difference]: Finished difference Result 105 states and 186 transitions. [2020-11-29 22:12:25,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:25,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-29 22:12:25,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:25,554 INFO L225 Difference]: With dead ends: 105 [2020-11-29 22:12:25,554 INFO L226 Difference]: Without dead ends: 72 [2020-11-29 22:12:25,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:25,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-29 22:12:25,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-11-29 22:12:25,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-29 22:12:25,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 124 transitions. [2020-11-29 22:12:25,565 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 124 transitions. Word has length 18 [2020-11-29 22:12:25,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:25,566 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 124 transitions. [2020-11-29 22:12:25,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:25,566 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 124 transitions. [2020-11-29 22:12:25,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 22:12:25,567 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:25,567 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 22:12:25,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 22:12:25,568 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:25,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:25,568 INFO L82 PathProgramCache]: Analyzing trace with hash -552043735, now seen corresponding path program 1 times [2020-11-29 22:12:25,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:25,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711673840] [2020-11-29 22:12:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:25,650 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 22:12:25,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711673840] [2020-11-29 22:12:25,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:25,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:25,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471637527] [2020-11-29 22:12:25,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:25,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:25,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:25,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:25,652 INFO L87 Difference]: Start difference. First operand 70 states and 124 transitions. Second operand 3 states. [2020-11-29 22:12:25,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:25,680 INFO L93 Difference]: Finished difference Result 133 states and 237 transitions. [2020-11-29 22:12:25,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:25,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-29 22:12:25,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:25,682 INFO L225 Difference]: With dead ends: 133 [2020-11-29 22:12:25,682 INFO L226 Difference]: Without dead ends: 131 [2020-11-29 22:12:25,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:25,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-29 22:12:25,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 93. [2020-11-29 22:12:25,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-29 22:12:25,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 165 transitions. [2020-11-29 22:12:25,696 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 165 transitions. Word has length 18 [2020-11-29 22:12:25,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:25,696 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 165 transitions. [2020-11-29 22:12:25,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:25,696 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 165 transitions. [2020-11-29 22:12:25,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 22:12:25,698 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:25,698 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 22:12:25,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 22:12:25,698 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:25,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:25,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1138849749, now seen corresponding path program 1 times [2020-11-29 22:12:25,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:25,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813248971] [2020-11-29 22:12:25,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:25,767 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 22:12:25,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813248971] [2020-11-29 22:12:25,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:25,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:25,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004961669] [2020-11-29 22:12:25,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:25,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:25,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:25,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:25,769 INFO L87 Difference]: Start difference. First operand 93 states and 165 transitions. Second operand 3 states. [2020-11-29 22:12:25,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:25,862 INFO L93 Difference]: Finished difference Result 221 states and 395 transitions. [2020-11-29 22:12:25,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:25,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-29 22:12:25,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:25,865 INFO L225 Difference]: With dead ends: 221 [2020-11-29 22:12:25,865 INFO L226 Difference]: Without dead ends: 133 [2020-11-29 22:12:25,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:25,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-11-29 22:12:25,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-11-29 22:12:25,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-11-29 22:12:25,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 231 transitions. [2020-11-29 22:12:25,896 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 231 transitions. Word has length 18 [2020-11-29 22:12:25,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:25,897 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 231 transitions. [2020-11-29 22:12:25,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:25,897 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 231 transitions. [2020-11-29 22:12:25,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 22:12:25,902 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:25,903 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 22:12:25,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 22:12:25,903 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:25,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:25,904 INFO L82 PathProgramCache]: Analyzing trace with hash 66727088, now seen corresponding path program 1 times [2020-11-29 22:12:25,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:25,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238025148] [2020-11-29 22:12:25,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:25,966 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 22:12:25,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238025148] [2020-11-29 22:12:25,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:25,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:25,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541137915] [2020-11-29 22:12:25,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:25,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:25,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:25,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:25,969 INFO L87 Difference]: Start difference. First operand 131 states and 231 transitions. Second operand 3 states. [2020-11-29 22:12:25,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:25,988 INFO L93 Difference]: Finished difference Result 198 states and 346 transitions. [2020-11-29 22:12:25,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:25,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-29 22:12:25,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:25,990 INFO L225 Difference]: With dead ends: 198 [2020-11-29 22:12:25,991 INFO L226 Difference]: Without dead ends: 135 [2020-11-29 22:12:25,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:25,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-29 22:12:26,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2020-11-29 22:12:26,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-11-29 22:12:26,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 231 transitions. [2020-11-29 22:12:26,007 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 231 transitions. Word has length 19 [2020-11-29 22:12:26,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:26,007 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 231 transitions. [2020-11-29 22:12:26,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:26,008 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 231 transitions. [2020-11-29 22:12:26,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 22:12:26,009 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:26,009 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 22:12:26,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 22:12:26,010 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:26,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:26,011 INFO L82 PathProgramCache]: Analyzing trace with hash -944390162, now seen corresponding path program 1 times [2020-11-29 22:12:26,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:26,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962817322] [2020-11-29 22:12:26,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:26,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962817322] [2020-11-29 22:12:26,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:26,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:26,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708200880] [2020-11-29 22:12:26,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:26,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:26,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:26,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:26,092 INFO L87 Difference]: Start difference. First operand 133 states and 231 transitions. Second operand 3 states. [2020-11-29 22:12:26,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:26,170 INFO L93 Difference]: Finished difference Result 381 states and 665 transitions. [2020-11-29 22:12:26,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:26,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-29 22:12:26,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:26,174 INFO L225 Difference]: With dead ends: 381 [2020-11-29 22:12:26,174 INFO L226 Difference]: Without dead ends: 255 [2020-11-29 22:12:26,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:26,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-11-29 22:12:26,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 253. [2020-11-29 22:12:26,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-11-29 22:12:26,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 435 transitions. [2020-11-29 22:12:26,201 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 435 transitions. Word has length 19 [2020-11-29 22:12:26,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:26,202 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 435 transitions. [2020-11-29 22:12:26,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:26,202 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 435 transitions. [2020-11-29 22:12:26,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 22:12:26,204 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:26,205 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 22:12:26,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 22:12:26,205 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:26,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:26,206 INFO L82 PathProgramCache]: Analyzing trace with hash -357584148, now seen corresponding path program 1 times [2020-11-29 22:12:26,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:26,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355139907] [2020-11-29 22:12:26,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:26,291 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 22:12:26,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355139907] [2020-11-29 22:12:26,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:26,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:26,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092317181] [2020-11-29 22:12:26,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:26,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:26,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:26,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:26,293 INFO L87 Difference]: Start difference. First operand 253 states and 435 transitions. Second operand 3 states. [2020-11-29 22:12:26,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:26,332 INFO L93 Difference]: Finished difference Result 321 states and 557 transitions. [2020-11-29 22:12:26,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:26,333 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-29 22:12:26,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:26,336 INFO L225 Difference]: With dead ends: 321 [2020-11-29 22:12:26,336 INFO L226 Difference]: Without dead ends: 319 [2020-11-29 22:12:26,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:26,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-11-29 22:12:26,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 253. [2020-11-29 22:12:26,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-11-29 22:12:26,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 431 transitions. [2020-11-29 22:12:26,366 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 431 transitions. Word has length 19 [2020-11-29 22:12:26,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:26,366 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 431 transitions. [2020-11-29 22:12:26,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:26,367 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 431 transitions. [2020-11-29 22:12:26,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 22:12:26,369 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:26,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:26,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 22:12:26,369 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:26,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:26,370 INFO L82 PathProgramCache]: Analyzing trace with hash 788890080, now seen corresponding path program 1 times [2020-11-29 22:12:26,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:26,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99468411] [2020-11-29 22:12:26,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:26,404 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 22:12:26,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99468411] [2020-11-29 22:12:26,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:26,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:26,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124565034] [2020-11-29 22:12:26,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:26,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:26,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:26,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:26,406 INFO L87 Difference]: Start difference. First operand 253 states and 431 transitions. Second operand 3 states. [2020-11-29 22:12:26,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:26,451 INFO L93 Difference]: Finished difference Result 469 states and 809 transitions. [2020-11-29 22:12:26,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:26,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-29 22:12:26,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:26,457 INFO L225 Difference]: With dead ends: 469 [2020-11-29 22:12:26,458 INFO L226 Difference]: Without dead ends: 467 [2020-11-29 22:12:26,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:26,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-11-29 22:12:26,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 353. [2020-11-29 22:12:26,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-11-29 22:12:26,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 591 transitions. [2020-11-29 22:12:26,498 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 591 transitions. Word has length 20 [2020-11-29 22:12:26,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:26,498 INFO L481 AbstractCegarLoop]: Abstraction has 353 states and 591 transitions. [2020-11-29 22:12:26,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:26,498 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 591 transitions. [2020-11-29 22:12:26,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 22:12:26,501 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:26,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:26,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 22:12:26,502 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:26,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:26,503 INFO L82 PathProgramCache]: Analyzing trace with hash 202084066, now seen corresponding path program 1 times [2020-11-29 22:12:26,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:26,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831469960] [2020-11-29 22:12:26,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:26,557 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 22:12:26,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831469960] [2020-11-29 22:12:26,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:26,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:26,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552623881] [2020-11-29 22:12:26,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:26,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:26,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:26,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:26,559 INFO L87 Difference]: Start difference. First operand 353 states and 591 transitions. Second operand 3 states. [2020-11-29 22:12:26,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:26,594 INFO L93 Difference]: Finished difference Result 837 states and 1409 transitions. [2020-11-29 22:12:26,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:26,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-29 22:12:26,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:26,599 INFO L225 Difference]: With dead ends: 837 [2020-11-29 22:12:26,599 INFO L226 Difference]: Without dead ends: 491 [2020-11-29 22:12:26,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:26,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-11-29 22:12:26,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 489. [2020-11-29 22:12:26,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-11-29 22:12:26,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 811 transitions. [2020-11-29 22:12:26,620 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 811 transitions. Word has length 20 [2020-11-29 22:12:26,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:26,621 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 811 transitions. [2020-11-29 22:12:26,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:26,621 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 811 transitions. [2020-11-29 22:12:26,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 22:12:26,622 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:26,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:26,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 22:12:26,623 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:26,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:26,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1313996925, now seen corresponding path program 1 times [2020-11-29 22:12:26,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:26,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331932965] [2020-11-29 22:12:26,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:26,701 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 22:12:26,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331932965] [2020-11-29 22:12:26,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:26,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:26,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169897547] [2020-11-29 22:12:26,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:26,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:26,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:26,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:26,703 INFO L87 Difference]: Start difference. First operand 489 states and 811 transitions. Second operand 3 states. [2020-11-29 22:12:26,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:26,734 INFO L93 Difference]: Finished difference Result 741 states and 1225 transitions. [2020-11-29 22:12:26,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:26,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-29 22:12:26,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:26,738 INFO L225 Difference]: With dead ends: 741 [2020-11-29 22:12:26,738 INFO L226 Difference]: Without dead ends: 503 [2020-11-29 22:12:26,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:26,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-11-29 22:12:26,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 501. [2020-11-29 22:12:26,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2020-11-29 22:12:26,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 819 transitions. [2020-11-29 22:12:26,758 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 819 transitions. Word has length 21 [2020-11-29 22:12:26,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:26,758 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 819 transitions. [2020-11-29 22:12:26,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:26,758 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 819 transitions. [2020-11-29 22:12:26,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 22:12:26,759 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:26,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:26,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 22:12:26,760 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:26,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:26,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1969853121, now seen corresponding path program 1 times [2020-11-29 22:12:26,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:26,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294875153] [2020-11-29 22:12:26,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:26,808 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 22:12:26,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294875153] [2020-11-29 22:12:26,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:26,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:26,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576843801] [2020-11-29 22:12:26,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:26,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:26,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:26,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:26,810 INFO L87 Difference]: Start difference. First operand 501 states and 819 transitions. Second operand 3 states. [2020-11-29 22:12:26,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:26,851 INFO L93 Difference]: Finished difference Result 905 states and 1501 transitions. [2020-11-29 22:12:26,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:26,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-29 22:12:26,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:26,858 INFO L225 Difference]: With dead ends: 905 [2020-11-29 22:12:26,858 INFO L226 Difference]: Without dead ends: 903 [2020-11-29 22:12:26,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:26,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2020-11-29 22:12:26,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 709. [2020-11-29 22:12:26,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-11-29 22:12:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1131 transitions. [2020-11-29 22:12:26,895 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1131 transitions. Word has length 21 [2020-11-29 22:12:26,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:26,895 INFO L481 AbstractCegarLoop]: Abstraction has 709 states and 1131 transitions. [2020-11-29 22:12:26,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:26,895 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1131 transitions. [2020-11-29 22:12:26,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 22:12:26,898 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:26,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:26,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 22:12:26,899 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:26,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:26,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1383047107, now seen corresponding path program 1 times [2020-11-29 22:12:26,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:26,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249534402] [2020-11-29 22:12:26,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:26,975 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 22:12:26,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249534402] [2020-11-29 22:12:26,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:26,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:26,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586365424] [2020-11-29 22:12:26,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:26,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:26,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:26,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:26,977 INFO L87 Difference]: Start difference. First operand 709 states and 1131 transitions. Second operand 3 states. [2020-11-29 22:12:27,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:27,027 INFO L93 Difference]: Finished difference Result 1657 states and 2653 transitions. [2020-11-29 22:12:27,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:27,030 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-29 22:12:27,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:27,044 INFO L225 Difference]: With dead ends: 1657 [2020-11-29 22:12:27,045 INFO L226 Difference]: Without dead ends: 967 [2020-11-29 22:12:27,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:27,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2020-11-29 22:12:27,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 965. [2020-11-29 22:12:27,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2020-11-29 22:12:27,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1523 transitions. [2020-11-29 22:12:27,090 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1523 transitions. Word has length 21 [2020-11-29 22:12:27,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:27,090 INFO L481 AbstractCegarLoop]: Abstraction has 965 states and 1523 transitions. [2020-11-29 22:12:27,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:27,094 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1523 transitions. [2020-11-29 22:12:27,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 22:12:27,097 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:27,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:27,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 22:12:27,099 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:27,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:27,100 INFO L82 PathProgramCache]: Analyzing trace with hash 936119319, now seen corresponding path program 1 times [2020-11-29 22:12:27,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:27,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989644418] [2020-11-29 22:12:27,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:27,165 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 22:12:27,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989644418] [2020-11-29 22:12:27,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:27,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:27,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857443310] [2020-11-29 22:12:27,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:27,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:27,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:27,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:27,167 INFO L87 Difference]: Start difference. First operand 965 states and 1523 transitions. Second operand 3 states. [2020-11-29 22:12:27,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:27,204 INFO L93 Difference]: Finished difference Result 1449 states and 2277 transitions. [2020-11-29 22:12:27,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:27,205 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-29 22:12:27,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:27,213 INFO L225 Difference]: With dead ends: 1449 [2020-11-29 22:12:27,213 INFO L226 Difference]: Without dead ends: 983 [2020-11-29 22:12:27,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:27,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2020-11-29 22:12:27,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 981. [2020-11-29 22:12:27,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 981 states. [2020-11-29 22:12:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1523 transitions. [2020-11-29 22:12:27,256 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1523 transitions. Word has length 22 [2020-11-29 22:12:27,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:27,256 INFO L481 AbstractCegarLoop]: Abstraction has 981 states and 1523 transitions. [2020-11-29 22:12:27,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:27,256 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1523 transitions. [2020-11-29 22:12:27,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 22:12:27,258 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:27,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:27,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 22:12:27,259 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:27,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:27,259 INFO L82 PathProgramCache]: Analyzing trace with hash -74997931, now seen corresponding path program 1 times [2020-11-29 22:12:27,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:27,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588555306] [2020-11-29 22:12:27,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:27,296 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 22:12:27,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588555306] [2020-11-29 22:12:27,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:27,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:27,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230895747] [2020-11-29 22:12:27,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:27,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:27,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:27,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:27,298 INFO L87 Difference]: Start difference. First operand 981 states and 1523 transitions. Second operand 3 states. [2020-11-29 22:12:27,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:27,338 INFO L93 Difference]: Finished difference Result 1737 states and 2741 transitions. [2020-11-29 22:12:27,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:27,339 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-29 22:12:27,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:27,350 INFO L225 Difference]: With dead ends: 1737 [2020-11-29 22:12:27,350 INFO L226 Difference]: Without dead ends: 1735 [2020-11-29 22:12:27,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:27,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2020-11-29 22:12:27,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1413. [2020-11-29 22:12:27,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1413 states. [2020-11-29 22:12:27,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 2131 transitions. [2020-11-29 22:12:27,415 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 2131 transitions. Word has length 22 [2020-11-29 22:12:27,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:27,416 INFO L481 AbstractCegarLoop]: Abstraction has 1413 states and 2131 transitions. [2020-11-29 22:12:27,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:27,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 2131 transitions. [2020-11-29 22:12:27,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 22:12:27,419 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:27,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:27,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 22:12:27,420 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:27,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:27,421 INFO L82 PathProgramCache]: Analyzing trace with hash -661803945, now seen corresponding path program 1 times [2020-11-29 22:12:27,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:27,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051372187] [2020-11-29 22:12:27,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:27,464 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 22:12:27,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051372187] [2020-11-29 22:12:27,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:27,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:27,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449813005] [2020-11-29 22:12:27,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:27,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:27,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:27,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:27,466 INFO L87 Difference]: Start difference. First operand 1413 states and 2131 transitions. Second operand 3 states. [2020-11-29 22:12:27,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:27,516 INFO L93 Difference]: Finished difference Result 3273 states and 4949 transitions. [2020-11-29 22:12:27,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:27,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-29 22:12:27,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:27,529 INFO L225 Difference]: With dead ends: 3273 [2020-11-29 22:12:27,529 INFO L226 Difference]: Without dead ends: 1895 [2020-11-29 22:12:27,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:27,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2020-11-29 22:12:27,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1893. [2020-11-29 22:12:27,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1893 states. [2020-11-29 22:12:27,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2819 transitions. [2020-11-29 22:12:27,594 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2819 transitions. Word has length 22 [2020-11-29 22:12:27,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:27,594 INFO L481 AbstractCegarLoop]: Abstraction has 1893 states and 2819 transitions. [2020-11-29 22:12:27,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:27,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2819 transitions. [2020-11-29 22:12:27,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 22:12:27,597 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:27,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:27,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 22:12:27,598 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:27,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:27,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1970246488, now seen corresponding path program 1 times [2020-11-29 22:12:27,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:27,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709648375] [2020-11-29 22:12:27,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:27,630 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 22:12:27,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709648375] [2020-11-29 22:12:27,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:27,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:27,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930368791] [2020-11-29 22:12:27,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:27,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:27,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:27,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:27,632 INFO L87 Difference]: Start difference. First operand 1893 states and 2819 transitions. Second operand 3 states. [2020-11-29 22:12:27,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:27,700 INFO L93 Difference]: Finished difference Result 2841 states and 4213 transitions. [2020-11-29 22:12:27,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:27,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-29 22:12:27,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:27,712 INFO L225 Difference]: With dead ends: 2841 [2020-11-29 22:12:27,712 INFO L226 Difference]: Without dead ends: 1927 [2020-11-29 22:12:27,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:27,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2020-11-29 22:12:27,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1925. [2020-11-29 22:12:27,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1925 states. [2020-11-29 22:12:27,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 2819 transitions. [2020-11-29 22:12:27,784 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 2819 transitions. Word has length 23 [2020-11-29 22:12:27,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:27,785 INFO L481 AbstractCegarLoop]: Abstraction has 1925 states and 2819 transitions. [2020-11-29 22:12:27,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:27,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 2819 transitions. [2020-11-29 22:12:27,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 22:12:27,787 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:27,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:27,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 22:12:27,788 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:27,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:27,788 INFO L82 PathProgramCache]: Analyzing trace with hash 959129238, now seen corresponding path program 1 times [2020-11-29 22:12:27,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:27,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442752144] [2020-11-29 22:12:27,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:27,820 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 22:12:27,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442752144] [2020-11-29 22:12:27,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:27,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:27,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952231209] [2020-11-29 22:12:27,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:27,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:27,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:27,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:27,822 INFO L87 Difference]: Start difference. First operand 1925 states and 2819 transitions. Second operand 3 states. [2020-11-29 22:12:27,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:27,912 INFO L93 Difference]: Finished difference Result 3337 states and 4965 transitions. [2020-11-29 22:12:27,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:27,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-29 22:12:27,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:27,931 INFO L225 Difference]: With dead ends: 3337 [2020-11-29 22:12:27,931 INFO L226 Difference]: Without dead ends: 3335 [2020-11-29 22:12:27,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:27,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3335 states. [2020-11-29 22:12:28,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3335 to 2821. [2020-11-29 22:12:28,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2821 states. [2020-11-29 22:12:28,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 4003 transitions. [2020-11-29 22:12:28,055 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 4003 transitions. Word has length 23 [2020-11-29 22:12:28,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:28,055 INFO L481 AbstractCegarLoop]: Abstraction has 2821 states and 4003 transitions. [2020-11-29 22:12:28,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:28,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 4003 transitions. [2020-11-29 22:12:28,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 22:12:28,059 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:28,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:28,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-29 22:12:28,059 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:28,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:28,060 INFO L82 PathProgramCache]: Analyzing trace with hash 372323224, now seen corresponding path program 1 times [2020-11-29 22:12:28,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:28,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779311914] [2020-11-29 22:12:28,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:28,100 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 22:12:28,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779311914] [2020-11-29 22:12:28,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:28,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:28,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038021012] [2020-11-29 22:12:28,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:28,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:28,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:28,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:28,102 INFO L87 Difference]: Start difference. First operand 2821 states and 4003 transitions. Second operand 3 states. [2020-11-29 22:12:28,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:28,186 INFO L93 Difference]: Finished difference Result 6473 states and 9189 transitions. [2020-11-29 22:12:28,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:28,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-29 22:12:28,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:28,209 INFO L225 Difference]: With dead ends: 6473 [2020-11-29 22:12:28,209 INFO L226 Difference]: Without dead ends: 3719 [2020-11-29 22:12:28,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:28,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2020-11-29 22:12:28,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3717. [2020-11-29 22:12:28,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3717 states. [2020-11-29 22:12:28,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3717 states to 3717 states and 5187 transitions. [2020-11-29 22:12:28,353 INFO L78 Accepts]: Start accepts. Automaton has 3717 states and 5187 transitions. Word has length 23 [2020-11-29 22:12:28,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:28,353 INFO L481 AbstractCegarLoop]: Abstraction has 3717 states and 5187 transitions. [2020-11-29 22:12:28,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:28,353 INFO L276 IsEmpty]: Start isEmpty. Operand 3717 states and 5187 transitions. [2020-11-29 22:12:28,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 22:12:28,358 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:28,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:28,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-29 22:12:28,359 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:28,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:28,360 INFO L82 PathProgramCache]: Analyzing trace with hash -331549300, now seen corresponding path program 1 times [2020-11-29 22:12:28,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:28,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630492205] [2020-11-29 22:12:28,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:28,425 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 22:12:28,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630492205] [2020-11-29 22:12:28,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:28,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:28,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481852484] [2020-11-29 22:12:28,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:28,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:28,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:28,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:28,427 INFO L87 Difference]: Start difference. First operand 3717 states and 5187 transitions. Second operand 3 states. [2020-11-29 22:12:28,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:28,508 INFO L93 Difference]: Finished difference Result 5577 states and 7749 transitions. [2020-11-29 22:12:28,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:28,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-29 22:12:28,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:28,531 INFO L225 Difference]: With dead ends: 5577 [2020-11-29 22:12:28,532 INFO L226 Difference]: Without dead ends: 3783 [2020-11-29 22:12:28,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:28,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2020-11-29 22:12:28,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3781. [2020-11-29 22:12:28,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3781 states. [2020-11-29 22:12:28,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 5187 transitions. [2020-11-29 22:12:28,661 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 5187 transitions. Word has length 24 [2020-11-29 22:12:28,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:28,661 INFO L481 AbstractCegarLoop]: Abstraction has 3781 states and 5187 transitions. [2020-11-29 22:12:28,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:28,662 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 5187 transitions. [2020-11-29 22:12:28,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 22:12:28,669 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:28,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:28,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-29 22:12:28,671 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:28,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:28,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1342666550, now seen corresponding path program 1 times [2020-11-29 22:12:28,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:28,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737973053] [2020-11-29 22:12:28,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:28,736 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 22:12:28,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737973053] [2020-11-29 22:12:28,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:28,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:28,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292654907] [2020-11-29 22:12:28,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:28,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:28,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:28,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:28,738 INFO L87 Difference]: Start difference. First operand 3781 states and 5187 transitions. Second operand 3 states. [2020-11-29 22:12:28,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:28,846 INFO L93 Difference]: Finished difference Result 6409 states and 8901 transitions. [2020-11-29 22:12:28,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:28,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-29 22:12:28,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:28,888 INFO L225 Difference]: With dead ends: 6409 [2020-11-29 22:12:28,896 INFO L226 Difference]: Without dead ends: 6407 [2020-11-29 22:12:28,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:28,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6407 states. [2020-11-29 22:12:29,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6407 to 5637. [2020-11-29 22:12:29,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5637 states. [2020-11-29 22:12:29,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5637 states to 5637 states and 7491 transitions. [2020-11-29 22:12:29,102 INFO L78 Accepts]: Start accepts. Automaton has 5637 states and 7491 transitions. Word has length 24 [2020-11-29 22:12:29,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:29,103 INFO L481 AbstractCegarLoop]: Abstraction has 5637 states and 7491 transitions. [2020-11-29 22:12:29,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:29,103 INFO L276 IsEmpty]: Start isEmpty. Operand 5637 states and 7491 transitions. [2020-11-29 22:12:29,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 22:12:29,113 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:29,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:29,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-29 22:12:29,113 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:29,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:29,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1929472564, now seen corresponding path program 1 times [2020-11-29 22:12:29,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:29,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132153293] [2020-11-29 22:12:29,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:29,137 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 22:12:29,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132153293] [2020-11-29 22:12:29,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:29,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:29,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593654036] [2020-11-29 22:12:29,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:29,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:29,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:29,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:29,139 INFO L87 Difference]: Start difference. First operand 5637 states and 7491 transitions. Second operand 3 states. [2020-11-29 22:12:29,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:29,256 INFO L93 Difference]: Finished difference Result 12809 states and 16965 transitions. [2020-11-29 22:12:29,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:29,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-29 22:12:29,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:29,270 INFO L225 Difference]: With dead ends: 12809 [2020-11-29 22:12:29,270 INFO L226 Difference]: Without dead ends: 7303 [2020-11-29 22:12:29,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:29,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7303 states. [2020-11-29 22:12:29,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7303 to 7301. [2020-11-29 22:12:29,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7301 states. [2020-11-29 22:12:29,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7301 states to 7301 states and 9475 transitions. [2020-11-29 22:12:29,523 INFO L78 Accepts]: Start accepts. Automaton has 7301 states and 9475 transitions. Word has length 24 [2020-11-29 22:12:29,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:29,524 INFO L481 AbstractCegarLoop]: Abstraction has 7301 states and 9475 transitions. [2020-11-29 22:12:29,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:29,524 INFO L276 IsEmpty]: Start isEmpty. Operand 7301 states and 9475 transitions. [2020-11-29 22:12:29,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 22:12:29,533 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:29,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:29,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-29 22:12:29,534 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:29,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:29,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1327225645, now seen corresponding path program 1 times [2020-11-29 22:12:29,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:29,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494755145] [2020-11-29 22:12:29,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:29,641 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 22:12:29,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494755145] [2020-11-29 22:12:29,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:29,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:29,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26679253] [2020-11-29 22:12:29,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:29,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:29,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:29,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:29,643 INFO L87 Difference]: Start difference. First operand 7301 states and 9475 transitions. Second operand 3 states. [2020-11-29 22:12:29,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:29,750 INFO L93 Difference]: Finished difference Result 10953 states and 14149 transitions. [2020-11-29 22:12:29,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:29,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-29 22:12:29,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:29,766 INFO L225 Difference]: With dead ends: 10953 [2020-11-29 22:12:29,766 INFO L226 Difference]: Without dead ends: 7431 [2020-11-29 22:12:29,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:29,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7431 states. [2020-11-29 22:12:30,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7431 to 7429. [2020-11-29 22:12:30,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7429 states. [2020-11-29 22:12:30,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7429 states to 7429 states and 9475 transitions. [2020-11-29 22:12:30,080 INFO L78 Accepts]: Start accepts. Automaton has 7429 states and 9475 transitions. Word has length 25 [2020-11-29 22:12:30,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:30,081 INFO L481 AbstractCegarLoop]: Abstraction has 7429 states and 9475 transitions. [2020-11-29 22:12:30,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:30,081 INFO L276 IsEmpty]: Start isEmpty. Operand 7429 states and 9475 transitions. [2020-11-29 22:12:30,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 22:12:30,092 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:30,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:30,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-29 22:12:30,093 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:30,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:30,093 INFO L82 PathProgramCache]: Analyzing trace with hash 316108395, now seen corresponding path program 1 times [2020-11-29 22:12:30,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:30,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591606957] [2020-11-29 22:12:30,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:30,137 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 22:12:30,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591606957] [2020-11-29 22:12:30,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:30,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:30,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631744452] [2020-11-29 22:12:30,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:30,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:30,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:30,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:30,139 INFO L87 Difference]: Start difference. First operand 7429 states and 9475 transitions. Second operand 3 states. [2020-11-29 22:12:30,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:30,338 INFO L93 Difference]: Finished difference Result 12297 states and 15749 transitions. [2020-11-29 22:12:30,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:30,339 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-29 22:12:30,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:30,365 INFO L225 Difference]: With dead ends: 12297 [2020-11-29 22:12:30,365 INFO L226 Difference]: Without dead ends: 12295 [2020-11-29 22:12:30,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:30,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12295 states. [2020-11-29 22:12:30,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12295 to 11269. [2020-11-29 22:12:30,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11269 states. [2020-11-29 22:12:30,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11269 states to 11269 states and 13955 transitions. [2020-11-29 22:12:30,692 INFO L78 Accepts]: Start accepts. Automaton has 11269 states and 13955 transitions. Word has length 25 [2020-11-29 22:12:30,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:30,693 INFO L481 AbstractCegarLoop]: Abstraction has 11269 states and 13955 transitions. [2020-11-29 22:12:30,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:30,693 INFO L276 IsEmpty]: Start isEmpty. Operand 11269 states and 13955 transitions. [2020-11-29 22:12:30,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 22:12:30,712 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:30,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:30,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-29 22:12:30,712 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:30,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:30,713 INFO L82 PathProgramCache]: Analyzing trace with hash -270697619, now seen corresponding path program 1 times [2020-11-29 22:12:30,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:30,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551785601] [2020-11-29 22:12:30,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:30,741 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 22:12:30,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551785601] [2020-11-29 22:12:30,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:30,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:30,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201029102] [2020-11-29 22:12:30,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:30,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:30,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:30,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:30,743 INFO L87 Difference]: Start difference. First operand 11269 states and 13955 transitions. Second operand 3 states. [2020-11-29 22:12:31,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:31,012 INFO L93 Difference]: Finished difference Result 25353 states and 31109 transitions. [2020-11-29 22:12:31,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:31,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-29 22:12:31,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:31,042 INFO L225 Difference]: With dead ends: 25353 [2020-11-29 22:12:31,042 INFO L226 Difference]: Without dead ends: 14343 [2020-11-29 22:12:31,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:31,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14343 states. [2020-11-29 22:12:31,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14343 to 14341. [2020-11-29 22:12:31,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14341 states. [2020-11-29 22:12:31,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14341 states to 14341 states and 17155 transitions. [2020-11-29 22:12:31,502 INFO L78 Accepts]: Start accepts. Automaton has 14341 states and 17155 transitions. Word has length 25 [2020-11-29 22:12:31,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:31,502 INFO L481 AbstractCegarLoop]: Abstraction has 14341 states and 17155 transitions. [2020-11-29 22:12:31,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:31,502 INFO L276 IsEmpty]: Start isEmpty. Operand 14341 states and 17155 transitions. [2020-11-29 22:12:31,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 22:12:31,523 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:31,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:31,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-29 22:12:31,523 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:31,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:31,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1209641729, now seen corresponding path program 1 times [2020-11-29 22:12:31,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:31,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491501904] [2020-11-29 22:12:31,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:31,553 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 22:12:31,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491501904] [2020-11-29 22:12:31,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:31,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:31,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310482923] [2020-11-29 22:12:31,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:31,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:31,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:31,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:31,555 INFO L87 Difference]: Start difference. First operand 14341 states and 17155 transitions. Second operand 3 states. [2020-11-29 22:12:31,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:31,842 INFO L93 Difference]: Finished difference Result 21513 states and 25605 transitions. [2020-11-29 22:12:31,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:31,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-29 22:12:31,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:31,874 INFO L225 Difference]: With dead ends: 21513 [2020-11-29 22:12:31,875 INFO L226 Difference]: Without dead ends: 14599 [2020-11-29 22:12:31,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:31,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14599 states. [2020-11-29 22:12:32,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14599 to 14597. [2020-11-29 22:12:32,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14597 states. [2020-11-29 22:12:32,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14597 states to 14597 states and 17155 transitions. [2020-11-29 22:12:32,342 INFO L78 Accepts]: Start accepts. Automaton has 14597 states and 17155 transitions. Word has length 26 [2020-11-29 22:12:32,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:32,343 INFO L481 AbstractCegarLoop]: Abstraction has 14597 states and 17155 transitions. [2020-11-29 22:12:32,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:32,343 INFO L276 IsEmpty]: Start isEmpty. Operand 14597 states and 17155 transitions. [2020-11-29 22:12:32,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 22:12:32,362 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:32,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:32,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-29 22:12:32,362 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:32,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:32,363 INFO L82 PathProgramCache]: Analyzing trace with hash 198524479, now seen corresponding path program 1 times [2020-11-29 22:12:32,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:32,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976280477] [2020-11-29 22:12:32,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:32,401 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 22:12:32,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976280477] [2020-11-29 22:12:32,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:32,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:32,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832495031] [2020-11-29 22:12:32,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:32,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:32,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:32,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:32,403 INFO L87 Difference]: Start difference. First operand 14597 states and 17155 transitions. Second operand 3 states. [2020-11-29 22:12:32,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:32,716 INFO L93 Difference]: Finished difference Result 23559 states and 27396 transitions. [2020-11-29 22:12:32,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:32,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-29 22:12:32,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:32,876 INFO L225 Difference]: With dead ends: 23559 [2020-11-29 22:12:32,877 INFO L226 Difference]: Without dead ends: 23557 [2020-11-29 22:12:32,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:32,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23557 states. [2020-11-29 22:12:33,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23557 to 22533. [2020-11-29 22:12:33,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22533 states. [2020-11-29 22:12:33,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22533 states to 22533 states and 25859 transitions. [2020-11-29 22:12:33,471 INFO L78 Accepts]: Start accepts. Automaton has 22533 states and 25859 transitions. Word has length 26 [2020-11-29 22:12:33,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:33,471 INFO L481 AbstractCegarLoop]: Abstraction has 22533 states and 25859 transitions. [2020-11-29 22:12:33,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:33,471 INFO L276 IsEmpty]: Start isEmpty. Operand 22533 states and 25859 transitions. [2020-11-29 22:12:33,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 22:12:33,502 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:12:33,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:33,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-11-29 22:12:33,503 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:12:33,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:33,503 INFO L82 PathProgramCache]: Analyzing trace with hash -388281535, now seen corresponding path program 1 times [2020-11-29 22:12:33,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:33,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687167155] [2020-11-29 22:12:33,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:33,527 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 22:12:33,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687167155] [2020-11-29 22:12:33,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:33,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:33,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569510819] [2020-11-29 22:12:33,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:12:33,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:33,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:33,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:33,529 INFO L87 Difference]: Start difference. First operand 22533 states and 25859 transitions. Second operand 3 states. [2020-11-29 22:12:33,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:33,987 INFO L93 Difference]: Finished difference Result 50181 states and 56579 transitions. [2020-11-29 22:12:33,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:33,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-29 22:12:33,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:12:33,988 INFO L225 Difference]: With dead ends: 50181 [2020-11-29 22:12:33,988 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 22:12:34,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:34,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 22:12:34,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 22:12:34,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 22:12:34,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 22:12:34,039 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-11-29 22:12:34,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:12:34,039 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:12:34,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:12:34,040 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:12:34,040 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 22:12:34,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-11-29 22:12:34,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 22:12:34,062 INFO L274 CegarLoopResult]: For program point L126(line 126) no Hoare annotation was computed. [2020-11-29 22:12:34,062 INFO L274 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-11-29 22:12:34,062 INFO L274 CegarLoopResult]: For program point L110-1(lines 41 160) no Hoare annotation was computed. [2020-11-29 22:12:34,063 INFO L274 CegarLoopResult]: For program point L135-1(lines 41 160) no Hoare annotation was computed. [2020-11-29 22:12:34,063 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 22:12:34,063 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 22:12:34,063 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 22:12:34,063 INFO L274 CegarLoopResult]: For program point L111(line 111) no Hoare annotation was computed. [2020-11-29 22:12:34,063 INFO L274 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-11-29 22:12:34,063 INFO L277 CegarLoopResult]: At program point L161(lines 7 165) the Hoare annotation is: true [2020-11-29 22:12:34,063 INFO L274 CegarLoopResult]: For program point L120-1(lines 41 160) no Hoare annotation was computed. [2020-11-29 22:12:34,064 INFO L274 CegarLoopResult]: For program point L145-1(lines 41 160) no Hoare annotation was computed. [2020-11-29 22:12:34,064 INFO L274 CegarLoopResult]: For program point L104-1(lines 41 160) no Hoare annotation was computed. [2020-11-29 22:12:34,064 INFO L274 CegarLoopResult]: For program point L96-1(lines 41 160) no Hoare annotation was computed. [2020-11-29 22:12:34,064 INFO L274 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-11-29 22:12:34,064 INFO L274 CegarLoopResult]: For program point L88-1(lines 41 160) no Hoare annotation was computed. [2020-11-29 22:12:34,064 INFO L274 CegarLoopResult]: For program point L146(line 146) no Hoare annotation was computed. [2020-11-29 22:12:34,064 INFO L274 CegarLoopResult]: For program point L80-1(lines 41 160) no Hoare annotation was computed. [2020-11-29 22:12:34,064 INFO L274 CegarLoopResult]: For program point L72-1(lines 41 160) no Hoare annotation was computed. [2020-11-29 22:12:34,064 INFO L274 CegarLoopResult]: For program point L130-1(lines 41 160) no Hoare annotation was computed. [2020-11-29 22:12:34,064 INFO L277 CegarLoopResult]: At program point L155-1(lines 41 160) the Hoare annotation is: true [2020-11-29 22:12:34,065 INFO L277 CegarLoopResult]: At program point L164(lines 6 165) the Hoare annotation is: true [2020-11-29 22:12:34,065 INFO L274 CegarLoopResult]: For program point L131(line 131) no Hoare annotation was computed. [2020-11-29 22:12:34,065 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 22:12:34,065 INFO L274 CegarLoopResult]: For program point L156(line 156) no Hoare annotation was computed. [2020-11-29 22:12:34,065 INFO L270 CegarLoopResult]: At program point L156-1(lines 7 165) the Hoare annotation is: false [2020-11-29 22:12:34,065 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 22:12:34,065 INFO L274 CegarLoopResult]: For program point L115-1(lines 41 160) no Hoare annotation was computed. [2020-11-29 22:12:34,065 INFO L274 CegarLoopResult]: For program point L140-1(lines 41 160) no Hoare annotation was computed. [2020-11-29 22:12:34,066 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 22:12:34,066 INFO L274 CegarLoopResult]: For program point L116(line 116) no Hoare annotation was computed. [2020-11-29 22:12:34,066 INFO L274 CegarLoopResult]: For program point L141(line 141) no Hoare annotation was computed. [2020-11-29 22:12:34,066 INFO L274 CegarLoopResult]: For program point L100-1(lines 41 160) no Hoare annotation was computed. [2020-11-29 22:12:34,066 INFO L274 CegarLoopResult]: For program point L125-1(lines 41 160) no Hoare annotation was computed. [2020-11-29 22:12:34,066 INFO L274 CegarLoopResult]: For program point L92-1(lines 41 160) no Hoare annotation was computed. [2020-11-29 22:12:34,066 INFO L274 CegarLoopResult]: For program point L150-1(lines 41 160) no Hoare annotation was computed. [2020-11-29 22:12:34,066 INFO L274 CegarLoopResult]: For program point L84-1(lines 41 160) no Hoare annotation was computed. [2020-11-29 22:12:34,066 INFO L274 CegarLoopResult]: For program point L43(lines 43 45) no Hoare annotation was computed. [2020-11-29 22:12:34,067 INFO L274 CegarLoopResult]: For program point L76-1(lines 41 160) no Hoare annotation was computed. [2020-11-29 22:12:34,067 INFO L274 CegarLoopResult]: For program point L68(lines 68 70) no Hoare annotation was computed. [2020-11-29 22:12:34,067 INFO L274 CegarLoopResult]: For program point L68-2(lines 41 160) no Hoare annotation was computed. [2020-11-29 22:12:34,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:12:34 BoogieIcfgContainer [2020-11-29 22:12:34,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:12:34,085 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:12:34,085 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:12:34,085 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:12:34,086 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:12:24" (3/4) ... [2020-11-29 22:12:34,089 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 22:12:34,102 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 22:12:34,102 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 22:12:34,103 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:12:34,103 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:12:34,187 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5a50004c-f785-4a63-836f-719c7c46d51a/bin/uautomizer/witness.graphml [2020-11-29 22:12:34,188 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:12:34,190 INFO L168 Benchmark]: Toolchain (without parser) took 10463.96 ms. Allocated memory was 92.3 MB in the beginning and 2.5 GB in the end (delta: 2.4 GB). Free memory was 58.7 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 246.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:12:34,190 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory was 66.3 MB in the beginning and 66.2 MB in the end (delta: 30.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:12:34,191 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.94 ms. Allocated memory is still 92.3 MB. Free memory was 58.5 MB in the beginning and 69.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:12:34,192 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.90 ms. Allocated memory is still 92.3 MB. Free memory was 69.2 MB in the beginning and 67.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:12:34,192 INFO L168 Benchmark]: Boogie Preprocessor took 33.30 ms. Allocated memory is still 92.3 MB. Free memory was 67.5 MB in the beginning and 66.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:12:34,193 INFO L168 Benchmark]: RCFGBuilder took 634.33 ms. Allocated memory is still 92.3 MB. Free memory was 66.2 MB in the beginning and 47.0 MB in the end (delta: 19.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-29 22:12:34,193 INFO L168 Benchmark]: TraceAbstraction took 9342.99 ms. Allocated memory was 92.3 MB in the beginning and 2.5 GB in the end (delta: 2.4 GB). Free memory was 46.2 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 232.0 MB. Max. memory is 16.1 GB. [2020-11-29 22:12:34,194 INFO L168 Benchmark]: Witness Printer took 102.82 ms. Allocated memory is still 2.5 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:12:34,196 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory was 66.3 MB in the beginning and 66.2 MB in the end (delta: 30.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 293.94 ms. Allocated memory is still 92.3 MB. Free memory was 58.5 MB in the beginning and 69.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.90 ms. Allocated memory is still 92.3 MB. Free memory was 69.2 MB in the beginning and 67.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.30 ms. Allocated memory is still 92.3 MB. Free memory was 67.5 MB in the beginning and 66.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 634.33 ms. Allocated memory is still 92.3 MB. Free memory was 66.2 MB in the beginning and 47.0 MB in the end (delta: 19.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9342.99 ms. Allocated memory was 92.3 MB in the beginning and 2.5 GB in the end (delta: 2.4 GB). Free memory was 46.2 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 232.0 MB. Max. memory is 16.1 GB. * Witness Printer took 102.82 ms. Allocated memory is still 2.5 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.2s, OverallIterations: 28, TraceHistogramMax: 1, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2304 SDtfs, 1149 SDslu, 1533 SDs, 0 SdLazy, 149 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22533occurred in iteration=27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.5s AutomataMinimizationTime, 28 MinimizatonAttempts, 4124 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 1033 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 608 NumberOfCodeBlocks, 608 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 580 ConstructedInterpolants, 0 QuantifiedInterpolants, 25948 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 28 InterpolantComputations, 28 PerfectInterpolantSequences, 0/0 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...