./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_11.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_b25848be-2ee4-4f01-bb93-c6c61638c4e5/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b25848be-2ee4-4f01-bb93-c6c61638c4e5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b25848be-2ee4-4f01-bb93-c6c61638c4e5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b25848be-2ee4-4f01-bb93-c6c61638c4e5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/locks/test_locks_11.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b25848be-2ee4-4f01-bb93-c6c61638c4e5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b25848be-2ee4-4f01-bb93-c6c61638c4e5/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 a93221bc263791497331acd2a7a0150037c621aa .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 21:12:12,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:12:12,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:12:13,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:12:13,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:12:13,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:12:13,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:12:13,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:12:13,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:12:13,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:12:13,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:12:13,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:12:13,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:12:13,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:12:13,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:12:13,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:12:13,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:12:13,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:12:13,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:12:13,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:12:13,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:12:13,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:12:13,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:12:13,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:12:13,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:12:13,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:12:13,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:12:13,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:12:13,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:12:13,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:12:13,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:12:13,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:12:13,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:12:13,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:12:13,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:12:13,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:12:13,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:12:13,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:12:13,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:12:13,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:12:13,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:12:13,159 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b25848be-2ee4-4f01-bb93-c6c61638c4e5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 21:12:13,204 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:12:13,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:12:13,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:12:13,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:12:13,209 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:12:13,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:12:13,209 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:12:13,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:12:13,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:12:13,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:12:13,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 21:12:13,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:12:13,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 21:12:13,213 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:12:13,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:12:13,213 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:12:13,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 21:12:13,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:12:13,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:12:13,214 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:12:13,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:12:13,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:12:13,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:12:13,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:12:13,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 21:12:13,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:12:13,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 21:12:13,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 21:12:13,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:12:13,217 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_b25848be-2ee4-4f01-bb93-c6c61638c4e5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b25848be-2ee4-4f01-bb93-c6c61638c4e5/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a93221bc263791497331acd2a7a0150037c621aa [2020-11-29 21:12:13,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:12:13,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:12:13,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:12:13,672 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:12:13,673 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:12:13,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b25848be-2ee4-4f01-bb93-c6c61638c4e5/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_11.c [2020-11-29 21:12:13,768 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b25848be-2ee4-4f01-bb93-c6c61638c4e5/bin/uautomizer/data/9e20e11fc/723dc2205b744f458a4a56dea30f3d77/FLAGf1fe193f1 [2020-11-29 21:12:14,350 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:12:14,350 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b25848be-2ee4-4f01-bb93-c6c61638c4e5/sv-benchmarks/c/locks/test_locks_11.c [2020-11-29 21:12:14,370 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b25848be-2ee4-4f01-bb93-c6c61638c4e5/bin/uautomizer/data/9e20e11fc/723dc2205b744f458a4a56dea30f3d77/FLAGf1fe193f1 [2020-11-29 21:12:14,688 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b25848be-2ee4-4f01-bb93-c6c61638c4e5/bin/uautomizer/data/9e20e11fc/723dc2205b744f458a4a56dea30f3d77 [2020-11-29 21:12:14,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:12:14,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:12:14,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:12:14,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:12:14,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:12:14,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:12:14" (1/1) ... [2020-11-29 21:12:14,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a7d78cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:12:14, skipping insertion in model container [2020-11-29 21:12:14,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:12:14" (1/1) ... [2020-11-29 21:12:14,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:12:14,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:12:15,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:12:15,121 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:12:15,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:12:15,199 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:12:15,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:12:15 WrapperNode [2020-11-29 21:12:15,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:12:15,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:12:15,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:12:15,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:12:15,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:12:15" (1/1) ... [2020-11-29 21:12:15,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:12:15" (1/1) ... [2020-11-29 21:12:15,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:12:15,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:12:15,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:12:15,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:12:15,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:12:15" (1/1) ... [2020-11-29 21:12:15,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:12:15" (1/1) ... [2020-11-29 21:12:15,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:12:15" (1/1) ... [2020-11-29 21:12:15,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:12:15" (1/1) ... [2020-11-29 21:12:15,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:12:15" (1/1) ... [2020-11-29 21:12:15,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:12:15" (1/1) ... [2020-11-29 21:12:15,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:12:15" (1/1) ... [2020-11-29 21:12:15,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:12:15,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:12:15,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:12:15,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:12:15,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:12:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b25848be-2ee4-4f01-bb93-c6c61638c4e5/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 21:12:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:12:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:12:15,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 21:12:15,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:12:16,087 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:12:16,090 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-29 21:12:16,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:12:16 BoogieIcfgContainer [2020-11-29 21:12:16,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:12:16,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:12:16,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:12:16,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:12:16,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:12:14" (1/3) ... [2020-11-29 21:12:16,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2223214e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:12:16, skipping insertion in model container [2020-11-29 21:12:16,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:12:15" (2/3) ... [2020-11-29 21:12:16,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2223214e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:12:16, skipping insertion in model container [2020-11-29 21:12:16,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:12:16" (3/3) ... [2020-11-29 21:12:16,104 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_11.c [2020-11-29 21:12:16,120 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:12:16,125 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 21:12:16,138 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 21:12:16,177 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:12:16,178 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 21:12:16,178 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:12:16,178 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:12:16,178 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:12:16,179 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:12:16,179 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:12:16,179 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:12:16,201 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-11-29 21:12:16,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 21:12:16,207 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:16,208 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 21:12:16,209 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:16,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:16,216 INFO L82 PathProgramCache]: Analyzing trace with hash 458919617, now seen corresponding path program 1 times [2020-11-29 21:12:16,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:16,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407356806] [2020-11-29 21:12:16,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:16,524 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 21:12:16,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407356806] [2020-11-29 21:12:16,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:16,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:16,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423904823] [2020-11-29 21:12:16,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:16,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:16,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:16,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:16,558 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-11-29 21:12:16,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:16,622 INFO L93 Difference]: Finished difference Result 90 states and 158 transitions. [2020-11-29 21:12:16,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:16,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-29 21:12:16,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:16,649 INFO L225 Difference]: With dead ends: 90 [2020-11-29 21:12:16,649 INFO L226 Difference]: Without dead ends: 75 [2020-11-29 21:12:16,652 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 21:12:16,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-29 21:12:16,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 51. [2020-11-29 21:12:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-29 21:12:16,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 94 transitions. [2020-11-29 21:12:16,717 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 94 transitions. Word has length 18 [2020-11-29 21:12:16,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:16,718 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 94 transitions. [2020-11-29 21:12:16,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:16,719 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 94 transitions. [2020-11-29 21:12:16,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 21:12:16,722 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:16,722 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 21:12:16,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:12:16,722 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:16,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:16,726 INFO L82 PathProgramCache]: Analyzing trace with hash -552197633, now seen corresponding path program 1 times [2020-11-29 21:12:16,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:16,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364926670] [2020-11-29 21:12:16,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:16,818 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 21:12:16,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364926670] [2020-11-29 21:12:16,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:16,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:16,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074095735] [2020-11-29 21:12:16,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:16,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:16,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:16,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:16,823 INFO L87 Difference]: Start difference. First operand 51 states and 94 transitions. Second operand 3 states. [2020-11-29 21:12:16,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:16,882 INFO L93 Difference]: Finished difference Result 124 states and 229 transitions. [2020-11-29 21:12:16,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:16,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-29 21:12:16,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:16,888 INFO L225 Difference]: With dead ends: 124 [2020-11-29 21:12:16,888 INFO L226 Difference]: Without dead ends: 75 [2020-11-29 21:12:16,889 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 21:12:16,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-29 21:12:16,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-11-29 21:12:16,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-29 21:12:16,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 134 transitions. [2020-11-29 21:12:16,902 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 134 transitions. Word has length 18 [2020-11-29 21:12:16,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:16,903 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 134 transitions. [2020-11-29 21:12:16,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:16,903 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 134 transitions. [2020-11-29 21:12:16,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 21:12:16,904 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:16,904 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 21:12:16,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 21:12:16,905 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:16,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:16,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1341819263, now seen corresponding path program 1 times [2020-11-29 21:12:16,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:16,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662146538] [2020-11-29 21:12:16,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:16,958 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 21:12:16,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662146538] [2020-11-29 21:12:16,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:16,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:16,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358141437] [2020-11-29 21:12:16,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:16,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:16,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:16,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:16,961 INFO L87 Difference]: Start difference. First operand 73 states and 134 transitions. Second operand 3 states. [2020-11-29 21:12:17,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:17,021 INFO L93 Difference]: Finished difference Result 114 states and 204 transitions. [2020-11-29 21:12:17,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:17,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-29 21:12:17,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:17,023 INFO L225 Difference]: With dead ends: 114 [2020-11-29 21:12:17,023 INFO L226 Difference]: Without dead ends: 78 [2020-11-29 21:12:17,024 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 21:12:17,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-29 21:12:17,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-11-29 21:12:17,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-29 21:12:17,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 136 transitions. [2020-11-29 21:12:17,034 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 136 transitions. Word has length 19 [2020-11-29 21:12:17,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:17,035 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 136 transitions. [2020-11-29 21:12:17,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:17,035 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 136 transitions. [2020-11-29 21:12:17,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 21:12:17,036 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:17,036 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 21:12:17,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 21:12:17,037 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:17,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:17,038 INFO L82 PathProgramCache]: Analyzing trace with hash 61955585, now seen corresponding path program 1 times [2020-11-29 21:12:17,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:17,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345775913] [2020-11-29 21:12:17,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:17,099 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 21:12:17,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345775913] [2020-11-29 21:12:17,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:17,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:17,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916604202] [2020-11-29 21:12:17,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:17,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:17,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:17,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:17,103 INFO L87 Difference]: Start difference. First operand 76 states and 136 transitions. Second operand 3 states. [2020-11-29 21:12:17,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:17,151 INFO L93 Difference]: Finished difference Result 145 states and 261 transitions. [2020-11-29 21:12:17,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:17,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-29 21:12:17,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:17,154 INFO L225 Difference]: With dead ends: 145 [2020-11-29 21:12:17,155 INFO L226 Difference]: Without dead ends: 143 [2020-11-29 21:12:17,155 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 21:12:17,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-11-29 21:12:17,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 101. [2020-11-29 21:12:17,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-29 21:12:17,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 181 transitions. [2020-11-29 21:12:17,182 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 181 transitions. Word has length 19 [2020-11-29 21:12:17,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:17,182 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 181 transitions. [2020-11-29 21:12:17,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:17,183 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 181 transitions. [2020-11-29 21:12:17,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 21:12:17,186 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:17,186 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 21:12:17,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 21:12:17,187 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:17,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:17,188 INFO L82 PathProgramCache]: Analyzing trace with hash -949161665, now seen corresponding path program 1 times [2020-11-29 21:12:17,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:17,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690831702] [2020-11-29 21:12:17,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:17,259 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 21:12:17,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690831702] [2020-11-29 21:12:17,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:17,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:17,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449891607] [2020-11-29 21:12:17,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:17,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:17,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:17,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:17,263 INFO L87 Difference]: Start difference. First operand 101 states and 181 transitions. Second operand 3 states. [2020-11-29 21:12:17,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:17,303 INFO L93 Difference]: Finished difference Result 241 states and 435 transitions. [2020-11-29 21:12:17,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:17,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-29 21:12:17,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:17,306 INFO L225 Difference]: With dead ends: 241 [2020-11-29 21:12:17,306 INFO L226 Difference]: Without dead ends: 145 [2020-11-29 21:12:17,308 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 21:12:17,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-29 21:12:17,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2020-11-29 21:12:17,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-29 21:12:17,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 255 transitions. [2020-11-29 21:12:17,360 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 255 transitions. Word has length 19 [2020-11-29 21:12:17,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:17,360 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 255 transitions. [2020-11-29 21:12:17,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:17,361 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 255 transitions. [2020-11-29 21:12:17,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 21:12:17,362 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:17,362 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] [2020-11-29 21:12:17,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 21:12:17,363 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:17,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:17,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1920836500, now seen corresponding path program 1 times [2020-11-29 21:12:17,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:17,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060748744] [2020-11-29 21:12:17,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:17,469 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 21:12:17,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060748744] [2020-11-29 21:12:17,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:17,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:17,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519100309] [2020-11-29 21:12:17,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:17,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:17,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:17,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:17,472 INFO L87 Difference]: Start difference. First operand 143 states and 255 transitions. Second operand 3 states. [2020-11-29 21:12:17,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:17,495 INFO L93 Difference]: Finished difference Result 216 states and 382 transitions. [2020-11-29 21:12:17,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:17,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-29 21:12:17,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:17,497 INFO L225 Difference]: With dead ends: 216 [2020-11-29 21:12:17,497 INFO L226 Difference]: Without dead ends: 147 [2020-11-29 21:12:17,498 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 21:12:17,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-11-29 21:12:17,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2020-11-29 21:12:17,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-29 21:12:17,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 255 transitions. [2020-11-29 21:12:17,517 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 255 transitions. Word has length 20 [2020-11-29 21:12:17,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:17,518 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 255 transitions. [2020-11-29 21:12:17,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:17,518 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 255 transitions. [2020-11-29 21:12:17,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 21:12:17,520 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:17,520 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 21:12:17,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 21:12:17,520 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:17,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:17,521 INFO L82 PathProgramCache]: Analyzing trace with hash 640972822, now seen corresponding path program 1 times [2020-11-29 21:12:17,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:17,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252383675] [2020-11-29 21:12:17,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:17,580 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 21:12:17,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252383675] [2020-11-29 21:12:17,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:17,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:17,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057641317] [2020-11-29 21:12:17,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:17,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:17,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:17,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:17,583 INFO L87 Difference]: Start difference. First operand 145 states and 255 transitions. Second operand 3 states. [2020-11-29 21:12:17,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:17,623 INFO L93 Difference]: Finished difference Result 417 states and 737 transitions. [2020-11-29 21:12:17,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:17,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-29 21:12:17,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:17,627 INFO L225 Difference]: With dead ends: 417 [2020-11-29 21:12:17,627 INFO L226 Difference]: Without dead ends: 279 [2020-11-29 21:12:17,628 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 21:12:17,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-11-29 21:12:17,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 277. [2020-11-29 21:12:17,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-11-29 21:12:17,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 483 transitions. [2020-11-29 21:12:17,665 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 483 transitions. Word has length 20 [2020-11-29 21:12:17,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:17,666 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 483 transitions. [2020-11-29 21:12:17,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:17,667 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 483 transitions. [2020-11-29 21:12:17,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 21:12:17,675 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:17,675 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 21:12:17,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 21:12:17,676 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:17,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:17,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1652090072, now seen corresponding path program 1 times [2020-11-29 21:12:17,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:17,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136081526] [2020-11-29 21:12:17,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:17,744 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 21:12:17,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136081526] [2020-11-29 21:12:17,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:17,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:17,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368555645] [2020-11-29 21:12:17,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:17,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:17,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:17,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:17,747 INFO L87 Difference]: Start difference. First operand 277 states and 483 transitions. Second operand 3 states. [2020-11-29 21:12:17,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:17,799 INFO L93 Difference]: Finished difference Result 353 states and 621 transitions. [2020-11-29 21:12:17,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:17,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-29 21:12:17,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:17,805 INFO L225 Difference]: With dead ends: 353 [2020-11-29 21:12:17,805 INFO L226 Difference]: Without dead ends: 351 [2020-11-29 21:12:17,805 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 21:12:17,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-11-29 21:12:17,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 277. [2020-11-29 21:12:17,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-11-29 21:12:17,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 479 transitions. [2020-11-29 21:12:17,836 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 479 transitions. Word has length 20 [2020-11-29 21:12:17,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:17,836 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 479 transitions. [2020-11-29 21:12:17,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:17,837 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 479 transitions. [2020-11-29 21:12:17,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 21:12:17,838 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:17,839 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 21:12:17,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 21:12:17,839 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:17,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:17,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1604465292, now seen corresponding path program 1 times [2020-11-29 21:12:17,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:17,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371534699] [2020-11-29 21:12:17,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:17,895 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 21:12:17,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371534699] [2020-11-29 21:12:17,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:17,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:17,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818828412] [2020-11-29 21:12:17,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:17,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:17,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:17,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:17,898 INFO L87 Difference]: Start difference. First operand 277 states and 479 transitions. Second operand 3 states. [2020-11-29 21:12:17,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:17,936 INFO L93 Difference]: Finished difference Result 517 states and 905 transitions. [2020-11-29 21:12:17,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:17,937 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-29 21:12:17,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:17,941 INFO L225 Difference]: With dead ends: 517 [2020-11-29 21:12:17,941 INFO L226 Difference]: Without dead ends: 515 [2020-11-29 21:12:17,942 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 21:12:17,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-11-29 21:12:17,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 385. [2020-11-29 21:12:17,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-11-29 21:12:17,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 655 transitions. [2020-11-29 21:12:17,961 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 655 transitions. Word has length 21 [2020-11-29 21:12:17,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:17,961 INFO L481 AbstractCegarLoop]: Abstraction has 385 states and 655 transitions. [2020-11-29 21:12:17,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:17,962 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 655 transitions. [2020-11-29 21:12:17,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 21:12:17,964 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:17,964 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 21:12:17,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 21:12:17,965 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:17,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:17,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1679384754, now seen corresponding path program 1 times [2020-11-29 21:12:17,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:17,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069158641] [2020-11-29 21:12:17,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:18,016 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 21:12:18,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069158641] [2020-11-29 21:12:18,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:18,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:18,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361526499] [2020-11-29 21:12:18,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:18,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:18,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:18,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:18,019 INFO L87 Difference]: Start difference. First operand 385 states and 655 transitions. Second operand 3 states. [2020-11-29 21:12:18,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:18,070 INFO L93 Difference]: Finished difference Result 917 states and 1569 transitions. [2020-11-29 21:12:18,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:18,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-29 21:12:18,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:18,077 INFO L225 Difference]: With dead ends: 917 [2020-11-29 21:12:18,077 INFO L226 Difference]: Without dead ends: 539 [2020-11-29 21:12:18,079 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 21:12:18,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2020-11-29 21:12:18,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 537. [2020-11-29 21:12:18,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-11-29 21:12:18,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 907 transitions. [2020-11-29 21:12:18,102 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 907 transitions. Word has length 21 [2020-11-29 21:12:18,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:18,102 INFO L481 AbstractCegarLoop]: Abstraction has 537 states and 907 transitions. [2020-11-29 21:12:18,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:18,103 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 907 transitions. [2020-11-29 21:12:18,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 21:12:18,104 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:18,104 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 21:12:18,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 21:12:18,105 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:18,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:18,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1801397547, now seen corresponding path program 1 times [2020-11-29 21:12:18,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:18,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791157790] [2020-11-29 21:12:18,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:18,148 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 21:12:18,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791157790] [2020-11-29 21:12:18,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:18,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:18,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791601126] [2020-11-29 21:12:18,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:18,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:18,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:18,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:18,151 INFO L87 Difference]: Start difference. First operand 537 states and 907 transitions. Second operand 3 states. [2020-11-29 21:12:18,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:18,199 INFO L93 Difference]: Finished difference Result 813 states and 1369 transitions. [2020-11-29 21:12:18,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:18,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-29 21:12:18,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:18,203 INFO L225 Difference]: With dead ends: 813 [2020-11-29 21:12:18,203 INFO L226 Difference]: Without dead ends: 551 [2020-11-29 21:12:18,204 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 21:12:18,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-11-29 21:12:18,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 549. [2020-11-29 21:12:18,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-11-29 21:12:18,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 915 transitions. [2020-11-29 21:12:18,224 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 915 transitions. Word has length 22 [2020-11-29 21:12:18,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:18,224 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 915 transitions. [2020-11-29 21:12:18,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:18,225 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 915 transitions. [2020-11-29 21:12:18,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 21:12:18,226 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:18,226 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 21:12:18,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 21:12:18,227 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:18,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:18,227 INFO L82 PathProgramCache]: Analyzing trace with hash 521533869, now seen corresponding path program 1 times [2020-11-29 21:12:18,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:18,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749418480] [2020-11-29 21:12:18,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:18,295 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 21:12:18,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749418480] [2020-11-29 21:12:18,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:18,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:18,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130155208] [2020-11-29 21:12:18,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:18,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:18,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:18,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:18,297 INFO L87 Difference]: Start difference. First operand 549 states and 915 transitions. Second operand 3 states. [2020-11-29 21:12:18,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:18,369 INFO L93 Difference]: Finished difference Result 1001 states and 1693 transitions. [2020-11-29 21:12:18,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:18,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-29 21:12:18,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:18,378 INFO L225 Difference]: With dead ends: 1001 [2020-11-29 21:12:18,378 INFO L226 Difference]: Without dead ends: 999 [2020-11-29 21:12:18,379 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 21:12:18,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2020-11-29 21:12:18,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 773. [2020-11-29 21:12:18,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2020-11-29 21:12:18,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1259 transitions. [2020-11-29 21:12:18,411 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1259 transitions. Word has length 22 [2020-11-29 21:12:18,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:18,412 INFO L481 AbstractCegarLoop]: Abstraction has 773 states and 1259 transitions. [2020-11-29 21:12:18,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:18,412 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1259 transitions. [2020-11-29 21:12:18,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 21:12:18,415 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:18,415 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 21:12:18,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 21:12:18,415 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:18,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:18,416 INFO L82 PathProgramCache]: Analyzing trace with hash -489583381, now seen corresponding path program 1 times [2020-11-29 21:12:18,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:18,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682102023] [2020-11-29 21:12:18,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:18,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:12:18,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682102023] [2020-11-29 21:12:18,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:18,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:18,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634650471] [2020-11-29 21:12:18,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:18,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:18,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:18,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:18,474 INFO L87 Difference]: Start difference. First operand 773 states and 1259 transitions. Second operand 3 states. [2020-11-29 21:12:18,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:18,517 INFO L93 Difference]: Finished difference Result 1817 states and 2973 transitions. [2020-11-29 21:12:18,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:18,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-29 21:12:18,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:18,530 INFO L225 Difference]: With dead ends: 1817 [2020-11-29 21:12:18,530 INFO L226 Difference]: Without dead ends: 1063 [2020-11-29 21:12:18,532 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 21:12:18,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2020-11-29 21:12:18,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1061. [2020-11-29 21:12:18,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2020-11-29 21:12:18,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1715 transitions. [2020-11-29 21:12:18,569 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1715 transitions. Word has length 22 [2020-11-29 21:12:18,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:18,569 INFO L481 AbstractCegarLoop]: Abstraction has 1061 states and 1715 transitions. [2020-11-29 21:12:18,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:18,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1715 transitions. [2020-11-29 21:12:18,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 21:12:18,575 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:18,576 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 21:12:18,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 21:12:18,576 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:18,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:18,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1012104857, now seen corresponding path program 1 times [2020-11-29 21:12:18,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:18,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962578564] [2020-11-29 21:12:18,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:18,619 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 21:12:18,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962578564] [2020-11-29 21:12:18,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:18,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:18,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851178086] [2020-11-29 21:12:18,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:18,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:18,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:18,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:18,621 INFO L87 Difference]: Start difference. First operand 1061 states and 1715 transitions. Second operand 3 states. [2020-11-29 21:12:18,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:18,650 INFO L93 Difference]: Finished difference Result 1593 states and 2565 transitions. [2020-11-29 21:12:18,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:18,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-29 21:12:18,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:18,657 INFO L225 Difference]: With dead ends: 1593 [2020-11-29 21:12:18,657 INFO L226 Difference]: Without dead ends: 1079 [2020-11-29 21:12:18,659 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 21:12:18,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2020-11-29 21:12:18,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1077. [2020-11-29 21:12:18,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-11-29 21:12:18,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1715 transitions. [2020-11-29 21:12:18,695 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1715 transitions. Word has length 23 [2020-11-29 21:12:18,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:18,696 INFO L481 AbstractCegarLoop]: Abstraction has 1077 states and 1715 transitions. [2020-11-29 21:12:18,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:18,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1715 transitions. [2020-11-29 21:12:18,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 21:12:18,698 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:18,698 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 21:12:18,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 21:12:18,699 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:18,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:18,699 INFO L82 PathProgramCache]: Analyzing trace with hash 2002998761, now seen corresponding path program 1 times [2020-11-29 21:12:18,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:18,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108976690] [2020-11-29 21:12:18,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:18,734 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 21:12:18,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108976690] [2020-11-29 21:12:18,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:18,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:18,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283479065] [2020-11-29 21:12:18,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:18,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:18,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:18,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:18,736 INFO L87 Difference]: Start difference. First operand 1077 states and 1715 transitions. Second operand 3 states. [2020-11-29 21:12:18,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:18,776 INFO L93 Difference]: Finished difference Result 1929 states and 3125 transitions. [2020-11-29 21:12:18,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:18,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-29 21:12:18,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:18,789 INFO L225 Difference]: With dead ends: 1929 [2020-11-29 21:12:18,789 INFO L226 Difference]: Without dead ends: 1927 [2020-11-29 21:12:18,792 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 21:12:18,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2020-11-29 21:12:18,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1541. [2020-11-29 21:12:18,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2020-11-29 21:12:18,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2387 transitions. [2020-11-29 21:12:18,851 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2387 transitions. Word has length 23 [2020-11-29 21:12:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:18,870 INFO L481 AbstractCegarLoop]: Abstraction has 1541 states and 2387 transitions. [2020-11-29 21:12:18,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:18,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2387 transitions. [2020-11-29 21:12:18,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 21:12:18,873 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:18,873 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 21:12:18,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 21:12:18,873 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:18,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:18,874 INFO L82 PathProgramCache]: Analyzing trace with hash 991881511, now seen corresponding path program 1 times [2020-11-29 21:12:18,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:18,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994002034] [2020-11-29 21:12:18,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:18,904 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 21:12:18,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994002034] [2020-11-29 21:12:18,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:18,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:18,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383601215] [2020-11-29 21:12:18,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:18,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:18,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:18,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:18,906 INFO L87 Difference]: Start difference. First operand 1541 states and 2387 transitions. Second operand 3 states. [2020-11-29 21:12:18,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:18,963 INFO L93 Difference]: Finished difference Result 3593 states and 5589 transitions. [2020-11-29 21:12:18,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:18,963 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-29 21:12:18,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:18,976 INFO L225 Difference]: With dead ends: 3593 [2020-11-29 21:12:18,977 INFO L226 Difference]: Without dead ends: 2087 [2020-11-29 21:12:18,979 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 21:12:18,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2020-11-29 21:12:19,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 2085. [2020-11-29 21:12:19,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-11-29 21:12:19,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3203 transitions. [2020-11-29 21:12:19,054 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3203 transitions. Word has length 23 [2020-11-29 21:12:19,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:19,054 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 3203 transitions. [2020-11-29 21:12:19,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:19,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3203 transitions. [2020-11-29 21:12:19,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 21:12:19,058 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:19,058 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 21:12:19,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 21:12:19,058 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:19,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:19,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1963634176, now seen corresponding path program 1 times [2020-11-29 21:12:19,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:19,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59125494] [2020-11-29 21:12:19,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:19,089 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 21:12:19,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59125494] [2020-11-29 21:12:19,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:19,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:19,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937073755] [2020-11-29 21:12:19,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:19,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:19,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:19,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:19,092 INFO L87 Difference]: Start difference. First operand 2085 states and 3203 transitions. Second operand 3 states. [2020-11-29 21:12:19,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:19,141 INFO L93 Difference]: Finished difference Result 3129 states and 4789 transitions. [2020-11-29 21:12:19,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:19,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-29 21:12:19,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:19,155 INFO L225 Difference]: With dead ends: 3129 [2020-11-29 21:12:19,156 INFO L226 Difference]: Without dead ends: 2119 [2020-11-29 21:12:19,158 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 21:12:19,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2119 states. [2020-11-29 21:12:19,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2119 to 2117. [2020-11-29 21:12:19,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-11-29 21:12:19,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 3203 transitions. [2020-11-29 21:12:19,233 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 3203 transitions. Word has length 24 [2020-11-29 21:12:19,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:19,234 INFO L481 AbstractCegarLoop]: Abstraction has 2117 states and 3203 transitions. [2020-11-29 21:12:19,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:19,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 3203 transitions. [2020-11-29 21:12:19,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 21:12:19,238 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:19,238 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 21:12:19,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 21:12:19,239 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:19,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:19,239 INFO L82 PathProgramCache]: Analyzing trace with hash 683770498, now seen corresponding path program 1 times [2020-11-29 21:12:19,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:19,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831850543] [2020-11-29 21:12:19,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:19,279 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 21:12:19,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831850543] [2020-11-29 21:12:19,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:19,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:19,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740177768] [2020-11-29 21:12:19,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:19,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:19,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:19,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:19,324 INFO L87 Difference]: Start difference. First operand 2117 states and 3203 transitions. Second operand 3 states. [2020-11-29 21:12:19,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:19,403 INFO L93 Difference]: Finished difference Result 3721 states and 5733 transitions. [2020-11-29 21:12:19,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:19,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-29 21:12:19,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:19,428 INFO L225 Difference]: With dead ends: 3721 [2020-11-29 21:12:19,429 INFO L226 Difference]: Without dead ends: 3719 [2020-11-29 21:12:19,431 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 21:12:19,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2020-11-29 21:12:19,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3077. [2020-11-29 21:12:19,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3077 states. [2020-11-29 21:12:19,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 4515 transitions. [2020-11-29 21:12:19,558 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 4515 transitions. Word has length 24 [2020-11-29 21:12:19,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:19,558 INFO L481 AbstractCegarLoop]: Abstraction has 3077 states and 4515 transitions. [2020-11-29 21:12:19,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:19,559 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 4515 transitions. [2020-11-29 21:12:19,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 21:12:19,564 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:19,565 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 21:12:19,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-29 21:12:19,565 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:19,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:19,566 INFO L82 PathProgramCache]: Analyzing trace with hash -327346752, now seen corresponding path program 1 times [2020-11-29 21:12:19,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:19,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232310081] [2020-11-29 21:12:19,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:19,605 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 21:12:19,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232310081] [2020-11-29 21:12:19,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:19,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:19,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958899438] [2020-11-29 21:12:19,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:19,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:19,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:19,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:19,607 INFO L87 Difference]: Start difference. First operand 3077 states and 4515 transitions. Second operand 3 states. [2020-11-29 21:12:19,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:19,696 INFO L93 Difference]: Finished difference Result 7113 states and 10469 transitions. [2020-11-29 21:12:19,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:19,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-29 21:12:19,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:19,722 INFO L225 Difference]: With dead ends: 7113 [2020-11-29 21:12:19,722 INFO L226 Difference]: Without dead ends: 4103 [2020-11-29 21:12:19,727 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 21:12:19,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2020-11-29 21:12:19,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 4101. [2020-11-29 21:12:19,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4101 states. [2020-11-29 21:12:19,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 5955 transitions. [2020-11-29 21:12:19,904 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 5955 transitions. Word has length 24 [2020-11-29 21:12:19,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:19,905 INFO L481 AbstractCegarLoop]: Abstraction has 4101 states and 5955 transitions. [2020-11-29 21:12:19,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:19,905 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 5955 transitions. [2020-11-29 21:12:19,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 21:12:19,911 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:19,911 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 21:12:19,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-29 21:12:19,912 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:19,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:19,913 INFO L82 PathProgramCache]: Analyzing trace with hash -277735972, now seen corresponding path program 1 times [2020-11-29 21:12:19,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:19,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213402388] [2020-11-29 21:12:19,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:19,937 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 21:12:19,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213402388] [2020-11-29 21:12:19,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:19,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:19,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705217308] [2020-11-29 21:12:19,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:19,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:19,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:19,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:19,940 INFO L87 Difference]: Start difference. First operand 4101 states and 5955 transitions. Second operand 3 states. [2020-11-29 21:12:20,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:20,018 INFO L93 Difference]: Finished difference Result 6153 states and 8901 transitions. [2020-11-29 21:12:20,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:20,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-29 21:12:20,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:20,046 INFO L225 Difference]: With dead ends: 6153 [2020-11-29 21:12:20,047 INFO L226 Difference]: Without dead ends: 4167 [2020-11-29 21:12:20,050 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 21:12:20,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2020-11-29 21:12:20,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 4165. [2020-11-29 21:12:20,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4165 states. [2020-11-29 21:12:20,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4165 states to 4165 states and 5955 transitions. [2020-11-29 21:12:20,209 INFO L78 Accepts]: Start accepts. Automaton has 4165 states and 5955 transitions. Word has length 25 [2020-11-29 21:12:20,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:20,210 INFO L481 AbstractCegarLoop]: Abstraction has 4165 states and 5955 transitions. [2020-11-29 21:12:20,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:20,210 INFO L276 IsEmpty]: Start isEmpty. Operand 4165 states and 5955 transitions. [2020-11-29 21:12:20,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 21:12:20,216 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:20,216 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 21:12:20,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-29 21:12:20,218 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:20,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:20,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1557599650, now seen corresponding path program 1 times [2020-11-29 21:12:20,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:20,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370649219] [2020-11-29 21:12:20,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:20,244 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 21:12:20,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370649219] [2020-11-29 21:12:20,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:20,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:20,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543152229] [2020-11-29 21:12:20,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:20,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:20,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:20,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:20,246 INFO L87 Difference]: Start difference. First operand 4165 states and 5955 transitions. Second operand 3 states. [2020-11-29 21:12:20,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:20,408 INFO L93 Difference]: Finished difference Result 7177 states and 10437 transitions. [2020-11-29 21:12:20,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:20,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-29 21:12:20,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:20,442 INFO L225 Difference]: With dead ends: 7177 [2020-11-29 21:12:20,451 INFO L226 Difference]: Without dead ends: 7175 [2020-11-29 21:12:20,454 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 21:12:20,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7175 states. [2020-11-29 21:12:20,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7175 to 6149. [2020-11-29 21:12:20,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6149 states. [2020-11-29 21:12:20,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6149 states to 6149 states and 8515 transitions. [2020-11-29 21:12:20,627 INFO L78 Accepts]: Start accepts. Automaton has 6149 states and 8515 transitions. Word has length 25 [2020-11-29 21:12:20,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:20,627 INFO L481 AbstractCegarLoop]: Abstraction has 6149 states and 8515 transitions. [2020-11-29 21:12:20,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:20,628 INFO L276 IsEmpty]: Start isEmpty. Operand 6149 states and 8515 transitions. [2020-11-29 21:12:20,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 21:12:20,638 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:20,639 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 21:12:20,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-29 21:12:20,639 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:20,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:20,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1726250396, now seen corresponding path program 1 times [2020-11-29 21:12:20,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:20,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122263703] [2020-11-29 21:12:20,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:20,665 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 21:12:20,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122263703] [2020-11-29 21:12:20,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:20,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:20,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496521631] [2020-11-29 21:12:20,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:20,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:20,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:20,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:20,667 INFO L87 Difference]: Start difference. First operand 6149 states and 8515 transitions. Second operand 3 states. [2020-11-29 21:12:20,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:20,828 INFO L93 Difference]: Finished difference Result 14089 states and 19525 transitions. [2020-11-29 21:12:20,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:20,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-29 21:12:20,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:20,845 INFO L225 Difference]: With dead ends: 14089 [2020-11-29 21:12:20,845 INFO L226 Difference]: Without dead ends: 8071 [2020-11-29 21:12:20,855 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 21:12:20,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8071 states. [2020-11-29 21:12:21,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8071 to 8069. [2020-11-29 21:12:21,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8069 states. [2020-11-29 21:12:21,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8069 states to 8069 states and 11011 transitions. [2020-11-29 21:12:21,153 INFO L78 Accepts]: Start accepts. Automaton has 8069 states and 11011 transitions. Word has length 25 [2020-11-29 21:12:21,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:21,153 INFO L481 AbstractCegarLoop]: Abstraction has 8069 states and 11011 transitions. [2020-11-29 21:12:21,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:21,154 INFO L276 IsEmpty]: Start isEmpty. Operand 8069 states and 11011 transitions. [2020-11-29 21:12:21,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 21:12:21,165 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:21,165 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 21:12:21,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-29 21:12:21,166 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:21,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:21,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1040733483, now seen corresponding path program 1 times [2020-11-29 21:12:21,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:21,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719665839] [2020-11-29 21:12:21,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:21,204 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 21:12:21,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719665839] [2020-11-29 21:12:21,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:21,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:21,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703541884] [2020-11-29 21:12:21,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:21,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:21,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:21,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:21,206 INFO L87 Difference]: Start difference. First operand 8069 states and 11011 transitions. Second operand 3 states. [2020-11-29 21:12:21,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:21,339 INFO L93 Difference]: Finished difference Result 12105 states and 16453 transitions. [2020-11-29 21:12:21,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:21,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-29 21:12:21,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:21,365 INFO L225 Difference]: With dead ends: 12105 [2020-11-29 21:12:21,365 INFO L226 Difference]: Without dead ends: 8199 [2020-11-29 21:12:21,373 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 21:12:21,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8199 states. [2020-11-29 21:12:21,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8199 to 8197. [2020-11-29 21:12:21,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8197 states. [2020-11-29 21:12:21,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8197 states to 8197 states and 11011 transitions. [2020-11-29 21:12:21,664 INFO L78 Accepts]: Start accepts. Automaton has 8197 states and 11011 transitions. Word has length 26 [2020-11-29 21:12:21,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:21,664 INFO L481 AbstractCegarLoop]: Abstraction has 8197 states and 11011 transitions. [2020-11-29 21:12:21,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:21,664 INFO L276 IsEmpty]: Start isEmpty. Operand 8197 states and 11011 transitions. [2020-11-29 21:12:21,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 21:12:21,675 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:21,676 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 21:12:21,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-29 21:12:21,676 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:21,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:21,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1974370135, now seen corresponding path program 1 times [2020-11-29 21:12:21,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:21,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836159198] [2020-11-29 21:12:21,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:21,707 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 21:12:21,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836159198] [2020-11-29 21:12:21,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:21,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:21,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107709317] [2020-11-29 21:12:21,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:21,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:21,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:21,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:21,709 INFO L87 Difference]: Start difference. First operand 8197 states and 11011 transitions. Second operand 3 states. [2020-11-29 21:12:21,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:21,884 INFO L93 Difference]: Finished difference Result 13833 states and 18821 transitions. [2020-11-29 21:12:21,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:21,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-29 21:12:21,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:21,913 INFO L225 Difference]: With dead ends: 13833 [2020-11-29 21:12:21,913 INFO L226 Difference]: Without dead ends: 13831 [2020-11-29 21:12:21,918 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 21:12:22,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13831 states. [2020-11-29 21:12:22,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13831 to 12293. [2020-11-29 21:12:22,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12293 states. [2020-11-29 21:12:22,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12293 states to 12293 states and 16003 transitions. [2020-11-29 21:12:22,338 INFO L78 Accepts]: Start accepts. Automaton has 12293 states and 16003 transitions. Word has length 26 [2020-11-29 21:12:22,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:22,338 INFO L481 AbstractCegarLoop]: Abstraction has 12293 states and 16003 transitions. [2020-11-29 21:12:22,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:22,339 INFO L276 IsEmpty]: Start isEmpty. Operand 12293 states and 16003 transitions. [2020-11-29 21:12:22,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 21:12:22,360 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:22,360 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 21:12:22,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-29 21:12:22,361 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:22,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:22,361 INFO L82 PathProgramCache]: Analyzing trace with hash 963252885, now seen corresponding path program 1 times [2020-11-29 21:12:22,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:22,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041933810] [2020-11-29 21:12:22,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:22,396 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 21:12:22,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041933810] [2020-11-29 21:12:22,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:22,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:22,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345859451] [2020-11-29 21:12:22,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:22,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:22,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:22,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:22,398 INFO L87 Difference]: Start difference. First operand 12293 states and 16003 transitions. Second operand 3 states. [2020-11-29 21:12:22,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:22,683 INFO L93 Difference]: Finished difference Result 27913 states and 36229 transitions. [2020-11-29 21:12:22,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:22,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-29 21:12:22,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:22,717 INFO L225 Difference]: With dead ends: 27913 [2020-11-29 21:12:22,717 INFO L226 Difference]: Without dead ends: 15879 [2020-11-29 21:12:22,733 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 21:12:22,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15879 states. [2020-11-29 21:12:23,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15879 to 15877. [2020-11-29 21:12:23,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15877 states. [2020-11-29 21:12:23,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15877 states to 15877 states and 20227 transitions. [2020-11-29 21:12:23,283 INFO L78 Accepts]: Start accepts. Automaton has 15877 states and 20227 transitions. Word has length 26 [2020-11-29 21:12:23,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:23,283 INFO L481 AbstractCegarLoop]: Abstraction has 15877 states and 20227 transitions. [2020-11-29 21:12:23,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:23,283 INFO L276 IsEmpty]: Start isEmpty. Operand 15877 states and 20227 transitions. [2020-11-29 21:12:23,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 21:12:23,303 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:23,303 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, 1] [2020-11-29 21:12:23,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-29 21:12:23,304 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:23,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:23,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1076147793, now seen corresponding path program 1 times [2020-11-29 21:12:23,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:23,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443633045] [2020-11-29 21:12:23,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:23,332 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 21:12:23,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443633045] [2020-11-29 21:12:23,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:23,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:23,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799606469] [2020-11-29 21:12:23,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:23,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:23,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:23,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:23,334 INFO L87 Difference]: Start difference. First operand 15877 states and 20227 transitions. Second operand 3 states. [2020-11-29 21:12:23,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:23,524 INFO L93 Difference]: Finished difference Result 23817 states and 30213 transitions. [2020-11-29 21:12:23,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:23,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-29 21:12:23,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:23,557 INFO L225 Difference]: With dead ends: 23817 [2020-11-29 21:12:23,557 INFO L226 Difference]: Without dead ends: 16135 [2020-11-29 21:12:23,570 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 21:12:23,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16135 states. [2020-11-29 21:12:23,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16135 to 16133. [2020-11-29 21:12:23,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16133 states. [2020-11-29 21:12:24,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16133 states to 16133 states and 20227 transitions. [2020-11-29 21:12:24,010 INFO L78 Accepts]: Start accepts. Automaton has 16133 states and 20227 transitions. Word has length 27 [2020-11-29 21:12:24,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:24,010 INFO L481 AbstractCegarLoop]: Abstraction has 16133 states and 20227 transitions. [2020-11-29 21:12:24,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:24,011 INFO L276 IsEmpty]: Start isEmpty. Operand 16133 states and 20227 transitions. [2020-11-29 21:12:24,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 21:12:24,032 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:24,033 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, 1] [2020-11-29 21:12:24,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-29 21:12:24,034 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:24,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:24,034 INFO L82 PathProgramCache]: Analyzing trace with hash -203715885, now seen corresponding path program 1 times [2020-11-29 21:12:24,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:24,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507836049] [2020-11-29 21:12:24,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:24,058 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 21:12:24,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507836049] [2020-11-29 21:12:24,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:24,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:24,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041175142] [2020-11-29 21:12:24,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:24,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:24,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:24,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:24,060 INFO L87 Difference]: Start difference. First operand 16133 states and 20227 transitions. Second operand 3 states. [2020-11-29 21:12:24,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:24,499 INFO L93 Difference]: Finished difference Result 26633 states and 33541 transitions. [2020-11-29 21:12:24,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:24,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-29 21:12:24,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:24,551 INFO L225 Difference]: With dead ends: 26633 [2020-11-29 21:12:24,551 INFO L226 Difference]: Without dead ends: 26631 [2020-11-29 21:12:24,556 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 21:12:24,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26631 states. [2020-11-29 21:12:25,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26631 to 24581. [2020-11-29 21:12:25,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24581 states. [2020-11-29 21:12:25,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24581 states to 24581 states and 29955 transitions. [2020-11-29 21:12:25,188 INFO L78 Accepts]: Start accepts. Automaton has 24581 states and 29955 transitions. Word has length 27 [2020-11-29 21:12:25,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:25,189 INFO L481 AbstractCegarLoop]: Abstraction has 24581 states and 29955 transitions. [2020-11-29 21:12:25,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:25,189 INFO L276 IsEmpty]: Start isEmpty. Operand 24581 states and 29955 transitions. [2020-11-29 21:12:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 21:12:25,237 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:25,237 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, 1] [2020-11-29 21:12:25,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-11-29 21:12:25,238 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:25,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:25,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1214833135, now seen corresponding path program 1 times [2020-11-29 21:12:25,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:25,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654417972] [2020-11-29 21:12:25,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:25,272 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 21:12:25,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654417972] [2020-11-29 21:12:25,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:25,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:25,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801254152] [2020-11-29 21:12:25,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:25,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:25,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:25,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:25,275 INFO L87 Difference]: Start difference. First operand 24581 states and 29955 transitions. Second operand 3 states. [2020-11-29 21:12:25,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:25,949 INFO L93 Difference]: Finished difference Result 55305 states and 66821 transitions. [2020-11-29 21:12:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:25,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-29 21:12:25,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:26,023 INFO L225 Difference]: With dead ends: 55305 [2020-11-29 21:12:26,023 INFO L226 Difference]: Without dead ends: 31239 [2020-11-29 21:12:26,055 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 21:12:26,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31239 states. [2020-11-29 21:12:26,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31239 to 31237. [2020-11-29 21:12:26,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31237 states. [2020-11-29 21:12:26,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31237 states to 31237 states and 36867 transitions. [2020-11-29 21:12:26,902 INFO L78 Accepts]: Start accepts. Automaton has 31237 states and 36867 transitions. Word has length 27 [2020-11-29 21:12:26,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:26,903 INFO L481 AbstractCegarLoop]: Abstraction has 31237 states and 36867 transitions. [2020-11-29 21:12:26,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:26,903 INFO L276 IsEmpty]: Start isEmpty. Operand 31237 states and 36867 transitions. [2020-11-29 21:12:27,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 21:12:27,108 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:27,109 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, 1, 1] [2020-11-29 21:12:27,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-11-29 21:12:27,109 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:27,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:27,110 INFO L82 PathProgramCache]: Analyzing trace with hash -2020009046, now seen corresponding path program 1 times [2020-11-29 21:12:27,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:27,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010098672] [2020-11-29 21:12:27,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:27,138 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 21:12:27,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010098672] [2020-11-29 21:12:27,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:27,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:27,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785291257] [2020-11-29 21:12:27,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:27,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:27,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:27,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:27,141 INFO L87 Difference]: Start difference. First operand 31237 states and 36867 transitions. Second operand 3 states. [2020-11-29 21:12:27,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:27,660 INFO L93 Difference]: Finished difference Result 46857 states and 55045 transitions. [2020-11-29 21:12:27,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:27,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-11-29 21:12:27,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:27,716 INFO L225 Difference]: With dead ends: 46857 [2020-11-29 21:12:27,716 INFO L226 Difference]: Without dead ends: 31751 [2020-11-29 21:12:27,726 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 21:12:27,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31751 states. [2020-11-29 21:12:28,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31751 to 31749. [2020-11-29 21:12:28,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31749 states. [2020-11-29 21:12:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31749 states to 31749 states and 36867 transitions. [2020-11-29 21:12:28,529 INFO L78 Accepts]: Start accepts. Automaton has 31749 states and 36867 transitions. Word has length 28 [2020-11-29 21:12:28,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:28,530 INFO L481 AbstractCegarLoop]: Abstraction has 31749 states and 36867 transitions. [2020-11-29 21:12:28,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:28,530 INFO L276 IsEmpty]: Start isEmpty. Operand 31749 states and 36867 transitions. [2020-11-29 21:12:28,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 21:12:28,547 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:28,547 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, 1, 1] [2020-11-29 21:12:28,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-11-29 21:12:28,547 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:28,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:28,548 INFO L82 PathProgramCache]: Analyzing trace with hash 995094572, now seen corresponding path program 1 times [2020-11-29 21:12:28,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:28,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446873730] [2020-11-29 21:12:28,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:28,572 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 21:12:28,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446873730] [2020-11-29 21:12:28,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:28,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:28,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415009212] [2020-11-29 21:12:28,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:28,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:28,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:28,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:28,574 INFO L87 Difference]: Start difference. First operand 31749 states and 36867 transitions. Second operand 3 states. [2020-11-29 21:12:29,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:29,533 INFO L93 Difference]: Finished difference Result 92167 states and 104452 transitions. [2020-11-29 21:12:29,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:29,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-11-29 21:12:29,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:29,589 INFO L225 Difference]: With dead ends: 92167 [2020-11-29 21:12:29,590 INFO L226 Difference]: Without dead ends: 31749 [2020-11-29 21:12:29,617 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 21:12:29,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31749 states. [2020-11-29 21:12:30,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31749 to 31749. [2020-11-29 21:12:30,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31749 states. [2020-11-29 21:12:30,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31749 states to 31749 states and 34819 transitions. [2020-11-29 21:12:30,445 INFO L78 Accepts]: Start accepts. Automaton has 31749 states and 34819 transitions. Word has length 28 [2020-11-29 21:12:30,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:30,445 INFO L481 AbstractCegarLoop]: Abstraction has 31749 states and 34819 transitions. [2020-11-29 21:12:30,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:30,445 INFO L276 IsEmpty]: Start isEmpty. Operand 31749 states and 34819 transitions. [2020-11-29 21:12:30,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 21:12:30,465 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:12:30,465 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, 1, 1] [2020-11-29 21:12:30,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-11-29 21:12:30,466 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:12:30,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:12:30,467 INFO L82 PathProgramCache]: Analyzing trace with hash 2006211822, now seen corresponding path program 1 times [2020-11-29 21:12:30,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:12:30,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922756708] [2020-11-29 21:12:30,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:12:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:12:30,499 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 21:12:30,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922756708] [2020-11-29 21:12:30,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:12:30,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:12:30,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467657844] [2020-11-29 21:12:30,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:12:30,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:12:30,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:12:30,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:12:30,501 INFO L87 Difference]: Start difference. First operand 31749 states and 34819 transitions. Second operand 3 states. [2020-11-29 21:12:30,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:12:30,736 INFO L93 Difference]: Finished difference Result 31749 states and 34819 transitions. [2020-11-29 21:12:30,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:12:30,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-11-29 21:12:30,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:12:30,737 INFO L225 Difference]: With dead ends: 31749 [2020-11-29 21:12:30,737 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 21:12:30,747 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 21:12:30,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 21:12:30,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 21:12:30,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 21:12:30,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 21:12:30,749 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-11-29 21:12:30,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:12:30,749 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:12:30,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:12:30,749 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:12:30,749 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 21:12:30,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-11-29 21:12:30,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 21:12:30,784 INFO L274 CegarLoopResult]: For program point L159-1(lines 44 174) no Hoare annotation was computed. [2020-11-29 21:12:30,784 INFO L274 CegarLoopResult]: For program point L93-1(lines 44 174) no Hoare annotation was computed. [2020-11-29 21:12:30,784 INFO L274 CegarLoopResult]: For program point L85-1(lines 44 174) no Hoare annotation was computed. [2020-11-29 21:12:30,785 INFO L274 CegarLoopResult]: For program point L77-1(lines 44 174) no Hoare annotation was computed. [2020-11-29 21:12:30,785 INFO L274 CegarLoopResult]: For program point L135(line 135) no Hoare annotation was computed. [2020-11-29 21:12:30,785 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 21:12:30,785 INFO L274 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-11-29 21:12:30,785 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 21:12:30,785 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 21:12:30,785 INFO L274 CegarLoopResult]: For program point L119-1(lines 44 174) no Hoare annotation was computed. [2020-11-29 21:12:30,785 INFO L274 CegarLoopResult]: For program point L144-1(lines 44 174) no Hoare annotation was computed. [2020-11-29 21:12:30,785 INFO L277 CegarLoopResult]: At program point L169-1(lines 44 174) the Hoare annotation is: true [2020-11-29 21:12:30,785 INFO L274 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2020-11-29 21:12:30,786 INFO L277 CegarLoopResult]: At program point L178(lines 6 179) the Hoare annotation is: true [2020-11-29 21:12:30,786 INFO L274 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-11-29 21:12:30,786 INFO L274 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-11-29 21:12:30,786 INFO L274 CegarLoopResult]: For program point L170(line 170) no Hoare annotation was computed. [2020-11-29 21:12:30,786 INFO L270 CegarLoopResult]: At program point L170-1(lines 7 179) the Hoare annotation is: false [2020-11-29 21:12:30,786 INFO L274 CegarLoopResult]: For program point L129-1(lines 44 174) no Hoare annotation was computed. [2020-11-29 21:12:30,786 INFO L274 CegarLoopResult]: For program point L154-1(lines 44 174) no Hoare annotation was computed. [2020-11-29 21:12:30,786 INFO L274 CegarLoopResult]: For program point L113-1(lines 44 174) no Hoare annotation was computed. [2020-11-29 21:12:30,786 INFO L274 CegarLoopResult]: For program point L105-1(lines 44 174) no Hoare annotation was computed. [2020-11-29 21:12:30,786 INFO L274 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-11-29 21:12:30,787 INFO L274 CegarLoopResult]: For program point L97-1(lines 44 174) no Hoare annotation was computed. [2020-11-29 21:12:30,787 INFO L274 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-11-29 21:12:30,787 INFO L274 CegarLoopResult]: For program point L89-1(lines 44 174) no Hoare annotation was computed. [2020-11-29 21:12:30,787 INFO L274 CegarLoopResult]: For program point L81-1(lines 44 174) no Hoare annotation was computed. [2020-11-29 21:12:30,787 INFO L274 CegarLoopResult]: For program point L139-1(lines 44 174) no Hoare annotation was computed. [2020-11-29 21:12:30,787 INFO L274 CegarLoopResult]: For program point L73(lines 73 75) no Hoare annotation was computed. [2020-11-29 21:12:30,787 INFO L274 CegarLoopResult]: For program point L73-2(lines 44 174) no Hoare annotation was computed. [2020-11-29 21:12:30,787 INFO L274 CegarLoopResult]: For program point L164-1(lines 44 174) no Hoare annotation was computed. [2020-11-29 21:12:30,787 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 21:12:30,787 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 21:12:30,787 INFO L274 CegarLoopResult]: For program point L140(line 140) no Hoare annotation was computed. [2020-11-29 21:12:30,788 INFO L274 CegarLoopResult]: For program point L165(line 165) no Hoare annotation was computed. [2020-11-29 21:12:30,788 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 21:12:30,788 INFO L274 CegarLoopResult]: For program point L124-1(lines 44 174) no Hoare annotation was computed. [2020-11-29 21:12:30,788 INFO L274 CegarLoopResult]: For program point L149-1(lines 44 174) no Hoare annotation was computed. [2020-11-29 21:12:30,788 INFO L274 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-11-29 21:12:30,788 INFO L274 CegarLoopResult]: For program point L150(line 150) no Hoare annotation was computed. [2020-11-29 21:12:30,788 INFO L277 CegarLoopResult]: At program point L175(lines 7 179) the Hoare annotation is: true [2020-11-29 21:12:30,788 INFO L274 CegarLoopResult]: For program point L109-1(lines 44 174) no Hoare annotation was computed. [2020-11-29 21:12:30,788 INFO L274 CegarLoopResult]: For program point L134-1(lines 44 174) no Hoare annotation was computed. [2020-11-29 21:12:30,788 INFO L274 CegarLoopResult]: For program point L101-1(lines 44 174) no Hoare annotation was computed. [2020-11-29 21:12:30,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:12:30 BoogieIcfgContainer [2020-11-29 21:12:30,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:12:30,810 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:12:30,810 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:12:30,810 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:12:30,811 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:12:16" (3/4) ... [2020-11-29 21:12:30,814 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 21:12:30,833 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 21:12:30,834 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 21:12:30,834 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:12:30,835 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:12:30,907 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b25848be-2ee4-4f01-bb93-c6c61638c4e5/bin/uautomizer/witness.graphml [2020-11-29 21:12:30,908 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:12:30,910 INFO L168 Benchmark]: Toolchain (without parser) took 16211.21 ms. Allocated memory was 100.7 MB in the beginning and 7.3 GB in the end (delta: 7.2 GB). Free memory was 71.6 MB in the beginning and 6.6 GB in the end (delta: -6.5 GB). Peak memory consumption was 708.2 MB. Max. memory is 16.1 GB. [2020-11-29 21:12:30,911 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 100.7 MB. Free memory is still 58.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:12:30,911 INFO L168 Benchmark]: CACSL2BoogieTranslator took 500.02 ms. Allocated memory was 100.7 MB in the beginning and 142.6 MB in the end (delta: 41.9 MB). Free memory was 71.6 MB in the beginning and 118.0 MB in the end (delta: -46.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:12:30,912 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.41 ms. Allocated memory is still 142.6 MB. Free memory was 118.0 MB in the beginning and 116.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:12:30,913 INFO L168 Benchmark]: Boogie Preprocessor took 33.81 ms. Allocated memory is still 142.6 MB. Free memory was 116.2 MB in the beginning and 114.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:12:30,913 INFO L168 Benchmark]: RCFGBuilder took 786.39 ms. Allocated memory is still 142.6 MB. Free memory was 114.5 MB in the beginning and 93.6 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-29 21:12:30,914 INFO L168 Benchmark]: TraceAbstraction took 14714.23 ms. Allocated memory was 142.6 MB in the beginning and 7.3 GB in the end (delta: 7.2 GB). Free memory was 93.6 MB in the beginning and 6.6 GB in the end (delta: -6.5 GB). Peak memory consumption was 686.0 MB. Max. memory is 16.1 GB. [2020-11-29 21:12:30,914 INFO L168 Benchmark]: Witness Printer took 97.90 ms. Allocated memory is still 7.3 GB. Free memory was 6.6 GB in the beginning and 6.6 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 21:12:30,916 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 100.7 MB. Free memory is still 58.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 500.02 ms. Allocated memory was 100.7 MB in the beginning and 142.6 MB in the end (delta: 41.9 MB). Free memory was 71.6 MB in the beginning and 118.0 MB in the end (delta: -46.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.41 ms. Allocated memory is still 142.6 MB. Free memory was 118.0 MB in the beginning and 116.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.81 ms. Allocated memory is still 142.6 MB. Free memory was 116.2 MB in the beginning and 114.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 786.39 ms. Allocated memory is still 142.6 MB. Free memory was 114.5 MB in the beginning and 93.6 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14714.23 ms. Allocated memory was 142.6 MB in the beginning and 7.3 GB in the end (delta: 7.2 GB). Free memory was 93.6 MB in the beginning and 6.6 GB in the end (delta: -6.5 GB). Peak memory consumption was 686.0 MB. Max. memory is 16.1 GB. * Witness Printer took 97.90 ms. Allocated memory is still 7.3 GB. Free memory was 6.6 GB in the beginning and 6.6 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: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.5s, OverallIterations: 31, TraceHistogramMax: 1, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2753 SDtfs, 1400 SDslu, 1835 SDs, 0 SdLazy, 163 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31749occurred in iteration=29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.3s AutomataMinimizationTime, 31 MinimizatonAttempts, 6176 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 2057 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 720 NumberOfCodeBlocks, 720 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 689 ConstructedInterpolants, 0 QuantifiedInterpolants, 33510 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 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...