./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/nested_delay_notd2.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_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/nested_delay_notd2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/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 e75363eaa8451f3d8cf8d707b181c1f456038a23 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Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:10:41,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:10:41,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:10:41,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:10:41,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:10:41,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:10:41,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:10:41,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:10:41,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:10:41,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:10:41,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:10:41,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:10:41,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:10:41,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:10:41,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:10:41,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:10:41,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:10:41,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:10:41,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:10:41,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:10:41,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:10:41,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:10:41,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:10:41,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:10:41,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:10:41,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:10:41,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:10:41,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:10:41,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:10:41,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:10:41,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:10:41,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:10:41,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:10:41,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:10:41,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:10:41,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:10:41,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:10:41,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:10:41,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:10:41,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:10:41,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:10:41,356 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:10:41,385 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:10:41,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:10:41,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:10:41,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:10:41,388 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:10:41,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:10:41,389 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:10:41,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:10:41,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:10:41,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:10:41,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:10:41,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:10:41,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:10:41,391 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:10:41,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:10:41,391 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:10:41,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:10:41,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:10:41,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:10:41,393 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:10:41,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:10:41,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:10:41,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:10:41,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:10:41,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:10:41,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:10:41,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:10:41,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:10:41,395 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:10:41,396 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_7c60217e-3be8-4d07-ab3e-0ed6efb63696/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e75363eaa8451f3d8cf8d707b181c1f456038a23 [2020-11-30 00:10:41,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:10:41,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:10:41,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:10:41,795 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:10:41,797 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:10:41,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/../../sv-benchmarks/c/loops-crafted-1/nested_delay_notd2.c [2020-11-30 00:10:41,901 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/data/33d64847f/be986e291bbe4a63960193ecaa673895/FLAG83014ce3a [2020-11-30 00:10:42,581 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:10:42,582 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/sv-benchmarks/c/loops-crafted-1/nested_delay_notd2.c [2020-11-30 00:10:42,589 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/data/33d64847f/be986e291bbe4a63960193ecaa673895/FLAG83014ce3a [2020-11-30 00:10:42,926 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/data/33d64847f/be986e291bbe4a63960193ecaa673895 [2020-11-30 00:10:42,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:10:42,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:10:42,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:10:42,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:10:42,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:10:42,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:10:42" (1/1) ... [2020-11-30 00:10:42,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d9ea9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:10:42, skipping insertion in model container [2020-11-30 00:10:42,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:10:42" (1/1) ... [2020-11-30 00:10:42,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:10:42,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:10:43,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:10:43,284 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:10:43,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:10:43,362 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:10:43,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:10:43 WrapperNode [2020-11-30 00:10:43,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:10:43,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:10:43,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:10:43,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:10:43,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:10:43" (1/1) ... [2020-11-30 00:10:43,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:10:43" (1/1) ... [2020-11-30 00:10:43,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:10:43,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:10:43,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:10:43,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:10:43,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:10:43" (1/1) ... [2020-11-30 00:10:43,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:10:43" (1/1) ... [2020-11-30 00:10:43,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:10:43" (1/1) ... [2020-11-30 00:10:43,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:10:43" (1/1) ... [2020-11-30 00:10:43,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:10:43" (1/1) ... [2020-11-30 00:10:43,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:10:43" (1/1) ... [2020-11-30 00:10:43,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:10:43" (1/1) ... [2020-11-30 00:10:43,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:10:43,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:10:43,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:10:43,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:10:43,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:10:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/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 [2020-11-30 00:10:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:10:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:10:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:10:43,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:10:43,874 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:10:43,875 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-30 00:10:43,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:10:43 BoogieIcfgContainer [2020-11-30 00:10:43,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:10:43,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:10:43,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:10:43,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:10:43,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:10:42" (1/3) ... [2020-11-30 00:10:43,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d7e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:10:43, skipping insertion in model container [2020-11-30 00:10:43,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:10:43" (2/3) ... [2020-11-30 00:10:43,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d7e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:10:43, skipping insertion in model container [2020-11-30 00:10:43,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:10:43" (3/3) ... [2020-11-30 00:10:43,889 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_delay_notd2.c [2020-11-30 00:10:43,904 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:10:43,910 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:10:43,940 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:10:43,971 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:10:43,972 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:10:43,972 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:10:43,972 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:10:43,973 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:10:43,973 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:10:43,973 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:10:43,973 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:10:43,992 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-11-30 00:10:43,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:10:44,000 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:44,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:44,012 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:44,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:44,020 INFO L82 PathProgramCache]: Analyzing trace with hash -493598204, now seen corresponding path program 1 times [2020-11-30 00:10:44,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:44,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392735958] [2020-11-30 00:10:44,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:44,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:10:44,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392735958] [2020-11-30 00:10:44,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:10:44,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:10:44,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157683609] [2020-11-30 00:10:44,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:10:44,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:44,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:10:44,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:10:44,235 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-11-30 00:10:44,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:44,256 INFO L93 Difference]: Finished difference Result 34 states and 54 transitions. [2020-11-30 00:10:44,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:10:44,258 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-30 00:10:44,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:44,268 INFO L225 Difference]: With dead ends: 34 [2020-11-30 00:10:44,269 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 00:10:44,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:10:44,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 00:10:44,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 00:10:44,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 00:10:44,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2020-11-30 00:10:44,314 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 12 [2020-11-30 00:10:44,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:44,314 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-11-30 00:10:44,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:10:44,315 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2020-11-30 00:10:44,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:10:44,316 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:44,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:44,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:10:44,317 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:44,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:44,318 INFO L82 PathProgramCache]: Analyzing trace with hash -2059231113, now seen corresponding path program 1 times [2020-11-30 00:10:44,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:44,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128627725] [2020-11-30 00:10:44,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:44,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:10:44,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128627725] [2020-11-30 00:10:44,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:10:44,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:10:44,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320105836] [2020-11-30 00:10:44,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:10:44,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:44,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:10:44,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:10:44,510 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand 4 states. [2020-11-30 00:10:44,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:44,631 INFO L93 Difference]: Finished difference Result 32 states and 46 transitions. [2020-11-30 00:10:44,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:10:44,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-30 00:10:44,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:44,634 INFO L225 Difference]: With dead ends: 32 [2020-11-30 00:10:44,634 INFO L226 Difference]: Without dead ends: 20 [2020-11-30 00:10:44,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:10:44,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-30 00:10:44,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2020-11-30 00:10:44,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-30 00:10:44,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2020-11-30 00:10:44,645 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 12 [2020-11-30 00:10:44,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:44,646 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2020-11-30 00:10:44,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:10:44,646 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2020-11-30 00:10:44,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:10:44,647 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:44,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:44,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:10:44,648 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:44,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:44,650 INFO L82 PathProgramCache]: Analyzing trace with hash 573171571, now seen corresponding path program 1 times [2020-11-30 00:10:44,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:44,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530125510] [2020-11-30 00:10:44,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 00:10:44,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530125510] [2020-11-30 00:10:44,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:10:44,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:10:44,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025508261] [2020-11-30 00:10:44,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:10:44,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:44,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:10:44,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:10:44,744 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand 3 states. [2020-11-30 00:10:44,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:44,833 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2020-11-30 00:10:44,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:10:44,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-30 00:10:44,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:44,837 INFO L225 Difference]: With dead ends: 38 [2020-11-30 00:10:44,837 INFO L226 Difference]: Without dead ends: 25 [2020-11-30 00:10:44,838 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 [2020-11-30 00:10:44,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-30 00:10:44,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 18. [2020-11-30 00:10:44,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 00:10:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2020-11-30 00:10:44,844 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 15 [2020-11-30 00:10:44,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:44,844 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2020-11-30 00:10:44,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:10:44,844 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2020-11-30 00:10:44,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:10:44,845 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:44,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:44,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:10:44,848 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:44,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:44,850 INFO L82 PathProgramCache]: Analyzing trace with hash 630429873, now seen corresponding path program 1 times [2020-11-30 00:10:44,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:44,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301878113] [2020-11-30 00:10:44,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 00:10:45,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301878113] [2020-11-30 00:10:45,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:10:45,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:10:45,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951667705] [2020-11-30 00:10:45,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:10:45,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:45,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:10:45,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:10:45,044 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand 4 states. [2020-11-30 00:10:45,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:45,101 INFO L93 Difference]: Finished difference Result 46 states and 64 transitions. [2020-11-30 00:10:45,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:10:45,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-30 00:10:45,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:45,104 INFO L225 Difference]: With dead ends: 46 [2020-11-30 00:10:45,104 INFO L226 Difference]: Without dead ends: 32 [2020-11-30 00:10:45,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:10:45,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-30 00:10:45,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-11-30 00:10:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 00:10:45,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 42 transitions. [2020-11-30 00:10:45,114 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 42 transitions. Word has length 15 [2020-11-30 00:10:45,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:45,115 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 42 transitions. [2020-11-30 00:10:45,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:10:45,115 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 42 transitions. [2020-11-30 00:10:45,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:10:45,116 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:45,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:45,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:10:45,117 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:45,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:45,118 INFO L82 PathProgramCache]: Analyzing trace with hash 630489455, now seen corresponding path program 1 times [2020-11-30 00:10:45,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:45,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538069445] [2020-11-30 00:10:45,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:10:45,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538069445] [2020-11-30 00:10:45,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883954746] [2020-11-30 00:10:45,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:45,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:10:45,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:10:45,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:10:45,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:10:45,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-11-30 00:10:45,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294584782] [2020-11-30 00:10:45,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:10:45,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:45,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:10:45,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:10:45,431 INFO L87 Difference]: Start difference. First operand 30 states and 42 transitions. Second operand 7 states. [2020-11-30 00:10:45,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:45,607 INFO L93 Difference]: Finished difference Result 67 states and 97 transitions. [2020-11-30 00:10:45,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:10:45,608 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-30 00:10:45,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:45,610 INFO L225 Difference]: With dead ends: 67 [2020-11-30 00:10:45,610 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 00:10:45,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:10:45,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 00:10:45,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-11-30 00:10:45,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-30 00:10:45,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 50 transitions. [2020-11-30 00:10:45,624 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 50 transitions. Word has length 15 [2020-11-30 00:10:45,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:45,624 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 50 transitions. [2020-11-30 00:10:45,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:10:45,624 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 50 transitions. [2020-11-30 00:10:45,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:10:45,637 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:45,637 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:45,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:45,864 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:45,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:45,865 INFO L82 PathProgramCache]: Analyzing trace with hash 730990835, now seen corresponding path program 2 times [2020-11-30 00:10:45,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:45,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457551197] [2020-11-30 00:10:45,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:45,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:10:45,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457551197] [2020-11-30 00:10:45,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015055235] [2020-11-30 00:10:45,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:46,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:10:46,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:10:46,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:10:46,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:10:46,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 00:10:46,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:10:46,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-11-30 00:10:46,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022519171] [2020-11-30 00:10:46,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 00:10:46,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:46,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 00:10:46,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:10:46,136 INFO L87 Difference]: Start difference. First operand 36 states and 50 transitions. Second operand 9 states. [2020-11-30 00:10:46,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:46,522 INFO L93 Difference]: Finished difference Result 123 states and 179 transitions. [2020-11-30 00:10:46,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 00:10:46,524 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-30 00:10:46,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:46,525 INFO L225 Difference]: With dead ends: 123 [2020-11-30 00:10:46,526 INFO L226 Difference]: Without dead ends: 91 [2020-11-30 00:10:46,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2020-11-30 00:10:46,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-30 00:10:46,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2020-11-30 00:10:46,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-30 00:10:46,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 101 transitions. [2020-11-30 00:10:46,547 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 101 transitions. Word has length 18 [2020-11-30 00:10:46,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:46,552 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 101 transitions. [2020-11-30 00:10:46,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 00:10:46,553 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 101 transitions. [2020-11-30 00:10:46,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 00:10:46,555 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:46,556 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:46,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:46,782 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:46,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:46,783 INFO L82 PathProgramCache]: Analyzing trace with hash -104466575, now seen corresponding path program 1 times [2020-11-30 00:10:46,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:46,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134080395] [2020-11-30 00:10:46,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:10:46,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134080395] [2020-11-30 00:10:46,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24234724] [2020-11-30 00:10:46,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:47,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:10:47,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:10:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:10:47,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:10:47,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-11-30 00:10:47,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478620435] [2020-11-30 00:10:47,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 00:10:47,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:47,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 00:10:47,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:10:47,107 INFO L87 Difference]: Start difference. First operand 76 states and 101 transitions. Second operand 11 states. [2020-11-30 00:10:47,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:47,270 INFO L93 Difference]: Finished difference Result 199 states and 267 transitions. [2020-11-30 00:10:47,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:10:47,271 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-11-30 00:10:47,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:47,274 INFO L225 Difference]: With dead ends: 199 [2020-11-30 00:10:47,277 INFO L226 Difference]: Without dead ends: 127 [2020-11-30 00:10:47,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:10:47,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-30 00:10:47,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 88. [2020-11-30 00:10:47,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-30 00:10:47,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 117 transitions. [2020-11-30 00:10:47,305 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 117 transitions. Word has length 21 [2020-11-30 00:10:47,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:47,306 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 117 transitions. [2020-11-30 00:10:47,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 00:10:47,306 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 117 transitions. [2020-11-30 00:10:47,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:10:47,308 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:47,308 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:47,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:47,520 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:47,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:47,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1399176113, now seen corresponding path program 2 times [2020-11-30 00:10:47,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:47,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874347661] [2020-11-30 00:10:47,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:47,627 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:10:47,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874347661] [2020-11-30 00:10:47,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119691652] [2020-11-30 00:10:47,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:47,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:10:47,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:10:47,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:10:47,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:10:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-30 00:10:47,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:10:47,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2020-11-30 00:10:47,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436476625] [2020-11-30 00:10:47,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 00:10:47,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:47,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 00:10:47,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:10:47,771 INFO L87 Difference]: Start difference. First operand 88 states and 117 transitions. Second operand 12 states. [2020-11-30 00:10:48,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:48,255 INFO L93 Difference]: Finished difference Result 291 states and 403 transitions. [2020-11-30 00:10:48,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-30 00:10:48,256 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2020-11-30 00:10:48,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:48,259 INFO L225 Difference]: With dead ends: 291 [2020-11-30 00:10:48,259 INFO L226 Difference]: Without dead ends: 207 [2020-11-30 00:10:48,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2020-11-30 00:10:48,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-11-30 00:10:48,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 146. [2020-11-30 00:10:48,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-30 00:10:48,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 194 transitions. [2020-11-30 00:10:48,315 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 194 transitions. Word has length 24 [2020-11-30 00:10:48,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:48,316 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 194 transitions. [2020-11-30 00:10:48,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 00:10:48,316 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 194 transitions. [2020-11-30 00:10:48,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 00:10:48,319 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:48,319 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:48,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:48,533 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:48,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:48,534 INFO L82 PathProgramCache]: Analyzing trace with hash -2084547665, now seen corresponding path program 3 times [2020-11-30 00:10:48,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:48,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824348202] [2020-11-30 00:10:48,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:48,677 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:10:48,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824348202] [2020-11-30 00:10:48,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37606134] [2020-11-30 00:10:48,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:48,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-30 00:10:48,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:10:48,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:10:48,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:10:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-30 00:10:48,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:10:48,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2020-11-30 00:10:48,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292372004] [2020-11-30 00:10:48,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:10:48,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:48,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:10:48,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:10:48,787 INFO L87 Difference]: Start difference. First operand 146 states and 194 transitions. Second operand 4 states. [2020-11-30 00:10:48,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:48,873 INFO L93 Difference]: Finished difference Result 334 states and 446 transitions. [2020-11-30 00:10:48,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:10:48,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-30 00:10:48,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:48,876 INFO L225 Difference]: With dead ends: 334 [2020-11-30 00:10:48,877 INFO L226 Difference]: Without dead ends: 192 [2020-11-30 00:10:48,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:10:48,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-11-30 00:10:48,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 164. [2020-11-30 00:10:48,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-11-30 00:10:48,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 202 transitions. [2020-11-30 00:10:48,912 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 202 transitions. Word has length 27 [2020-11-30 00:10:48,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:48,914 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 202 transitions. [2020-11-30 00:10:48,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:10:48,915 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 202 transitions. [2020-11-30 00:10:48,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 00:10:48,916 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:48,917 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:49,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:49,134 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:49,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:49,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1868779761, now seen corresponding path program 1 times [2020-11-30 00:10:49,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:49,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037378593] [2020-11-30 00:10:49,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-11-30 00:10:49,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037378593] [2020-11-30 00:10:49,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:10:49,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:10:49,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390197760] [2020-11-30 00:10:49,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:10:49,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:49,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:10:49,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:10:49,208 INFO L87 Difference]: Start difference. First operand 164 states and 202 transitions. Second operand 3 states. [2020-11-30 00:10:49,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:49,254 INFO L93 Difference]: Finished difference Result 336 states and 416 transitions. [2020-11-30 00:10:49,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:10:49,255 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-30 00:10:49,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:49,257 INFO L225 Difference]: With dead ends: 336 [2020-11-30 00:10:49,257 INFO L226 Difference]: Without dead ends: 176 [2020-11-30 00:10:49,262 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 [2020-11-30 00:10:49,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-11-30 00:10:49,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 162. [2020-11-30 00:10:49,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-11-30 00:10:49,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 196 transitions. [2020-11-30 00:10:49,289 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 196 transitions. Word has length 27 [2020-11-30 00:10:49,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:49,290 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 196 transitions. [2020-11-30 00:10:49,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:10:49,291 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 196 transitions. [2020-11-30 00:10:49,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 00:10:49,300 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:49,300 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:49,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 00:10:49,301 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:49,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:49,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1325275563, now seen corresponding path program 1 times [2020-11-30 00:10:49,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:49,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364040552] [2020-11-30 00:10:49,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:49,468 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:10:49,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364040552] [2020-11-30 00:10:49,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551556852] [2020-11-30 00:10:49,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:49,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:10:49,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:10:49,648 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:10:49,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:10:49,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-11-30 00:10:49,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138338291] [2020-11-30 00:10:49,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-30 00:10:49,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:49,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 00:10:49,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2020-11-30 00:10:49,651 INFO L87 Difference]: Start difference. First operand 162 states and 196 transitions. Second operand 15 states. [2020-11-30 00:10:49,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:49,828 INFO L93 Difference]: Finished difference Result 449 states and 539 transitions. [2020-11-30 00:10:49,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:10:49,829 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2020-11-30 00:10:49,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:49,833 INFO L225 Difference]: With dead ends: 449 [2020-11-30 00:10:49,833 INFO L226 Difference]: Without dead ends: 291 [2020-11-30 00:10:49,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2020-11-30 00:10:49,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-11-30 00:10:49,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 192. [2020-11-30 00:10:49,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-11-30 00:10:49,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 230 transitions. [2020-11-30 00:10:49,856 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 230 transitions. Word has length 28 [2020-11-30 00:10:49,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:49,857 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 230 transitions. [2020-11-30 00:10:49,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-30 00:10:49,857 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 230 transitions. [2020-11-30 00:10:49,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 00:10:49,860 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:49,861 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:50,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:50,074 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:50,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:50,075 INFO L82 PathProgramCache]: Analyzing trace with hash 399501479, now seen corresponding path program 2 times [2020-11-30 00:10:50,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:50,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072676744] [2020-11-30 00:10:50,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:10:50,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072676744] [2020-11-30 00:10:50,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691945403] [2020-11-30 00:10:50,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:50,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:10:50,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:10:50,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 00:10:50,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:10:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:10:50,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:10:50,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-11-30 00:10:50,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282254269] [2020-11-30 00:10:50,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-30 00:10:50,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:50,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-30 00:10:50,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=157, Unknown=0, NotChecked=0, Total=272 [2020-11-30 00:10:50,501 INFO L87 Difference]: Start difference. First operand 192 states and 230 transitions. Second operand 17 states. [2020-11-30 00:10:50,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:50,743 INFO L93 Difference]: Finished difference Result 509 states and 607 transitions. [2020-11-30 00:10:50,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 00:10:50,743 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 31 [2020-11-30 00:10:50,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:50,746 INFO L225 Difference]: With dead ends: 509 [2020-11-30 00:10:50,746 INFO L226 Difference]: Without dead ends: 321 [2020-11-30 00:10:50,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=157, Unknown=0, NotChecked=0, Total=272 [2020-11-30 00:10:50,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-11-30 00:10:50,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 222. [2020-11-30 00:10:50,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-11-30 00:10:50,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 264 transitions. [2020-11-30 00:10:50,774 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 264 transitions. Word has length 31 [2020-11-30 00:10:50,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:50,777 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 264 transitions. [2020-11-30 00:10:50,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-30 00:10:50,778 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 264 transitions. [2020-11-30 00:10:50,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-30 00:10:50,779 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:50,780 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:50,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:50,990 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:50,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:50,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1351227349, now seen corresponding path program 3 times [2020-11-30 00:10:50,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:50,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066456086] [2020-11-30 00:10:50,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:51,183 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:10:51,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066456086] [2020-11-30 00:10:51,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219223957] [2020-11-30 00:10:51,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:51,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-30 00:10:51,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:10:51,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 00:10:51,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:10:51,365 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:10:51,436 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-11-30 00:10:51,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:10:51,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2020-11-30 00:10:51,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603259246] [2020-11-30 00:10:51,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:10:51,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:51,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:10:51,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-11-30 00:10:51,441 INFO L87 Difference]: Start difference. First operand 222 states and 264 transitions. Second operand 8 states. [2020-11-30 00:10:51,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:51,649 INFO L93 Difference]: Finished difference Result 515 states and 607 transitions. [2020-11-30 00:10:51,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:10:51,650 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-11-30 00:10:51,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:51,654 INFO L225 Difference]: With dead ends: 515 [2020-11-30 00:10:51,654 INFO L226 Difference]: Without dead ends: 513 [2020-11-30 00:10:51,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-11-30 00:10:51,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-11-30 00:10:51,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 318. [2020-11-30 00:10:51,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-11-30 00:10:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 374 transitions. [2020-11-30 00:10:51,689 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 374 transitions. Word has length 34 [2020-11-30 00:10:51,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:51,689 INFO L481 AbstractCegarLoop]: Abstraction has 318 states and 374 transitions. [2020-11-30 00:10:51,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:10:51,689 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 374 transitions. [2020-11-30 00:10:51,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-30 00:10:51,690 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:51,690 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:51,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-30 00:10:51,906 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:51,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:51,907 INFO L82 PathProgramCache]: Analyzing trace with hash 797901481, now seen corresponding path program 1 times [2020-11-30 00:10:51,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:51,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421892029] [2020-11-30 00:10:51,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:51,958 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-11-30 00:10:51,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421892029] [2020-11-30 00:10:51,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:10:51,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:10:51,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889206362] [2020-11-30 00:10:51,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:10:51,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:51,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:10:51,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:10:51,960 INFO L87 Difference]: Start difference. First operand 318 states and 374 transitions. Second operand 3 states. [2020-11-30 00:10:52,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:52,003 INFO L93 Difference]: Finished difference Result 450 states and 534 transitions. [2020-11-30 00:10:52,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:10:52,004 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-11-30 00:10:52,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:52,007 INFO L225 Difference]: With dead ends: 450 [2020-11-30 00:10:52,007 INFO L226 Difference]: Without dead ends: 337 [2020-11-30 00:10:52,008 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 [2020-11-30 00:10:52,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-11-30 00:10:52,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 324. [2020-11-30 00:10:52,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-11-30 00:10:52,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 380 transitions. [2020-11-30 00:10:52,036 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 380 transitions. Word has length 34 [2020-11-30 00:10:52,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:52,036 INFO L481 AbstractCegarLoop]: Abstraction has 324 states and 380 transitions. [2020-11-30 00:10:52,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:10:52,037 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 380 transitions. [2020-11-30 00:10:52,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-30 00:10:52,038 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:52,038 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:52,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-30 00:10:52,039 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:52,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:52,040 INFO L82 PathProgramCache]: Analyzing trace with hash 799808105, now seen corresponding path program 1 times [2020-11-30 00:10:52,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:52,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648517280] [2020-11-30 00:10:52,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:52,207 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:10:52,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648517280] [2020-11-30 00:10:52,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857725814] [2020-11-30 00:10:52,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:52,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 00:10:52,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:10:52,510 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:10:52,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:10:52,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2020-11-30 00:10:52,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927897855] [2020-11-30 00:10:52,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-30 00:10:52,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:52,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-30 00:10:52,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2020-11-30 00:10:52,521 INFO L87 Difference]: Start difference. First operand 324 states and 380 transitions. Second operand 19 states. [2020-11-30 00:10:52,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:52,739 INFO L93 Difference]: Finished difference Result 718 states and 847 transitions. [2020-11-30 00:10:52,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 00:10:52,740 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 34 [2020-11-30 00:10:52,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:52,744 INFO L225 Difference]: With dead ends: 718 [2020-11-30 00:10:52,745 INFO L226 Difference]: Without dead ends: 472 [2020-11-30 00:10:52,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2020-11-30 00:10:52,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-11-30 00:10:52,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 366. [2020-11-30 00:10:52,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-11-30 00:10:52,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 427 transitions. [2020-11-30 00:10:52,794 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 427 transitions. Word has length 34 [2020-11-30 00:10:52,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:52,796 INFO L481 AbstractCegarLoop]: Abstraction has 366 states and 427 transitions. [2020-11-30 00:10:52,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-30 00:10:52,796 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 427 transitions. [2020-11-30 00:10:52,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-30 00:10:52,797 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:52,797 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:53,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-30 00:10:53,002 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:53,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:53,003 INFO L82 PathProgramCache]: Analyzing trace with hash -813780251, now seen corresponding path program 2 times [2020-11-30 00:10:53,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:53,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164902749] [2020-11-30 00:10:53,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:10:53,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164902749] [2020-11-30 00:10:53,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357726448] [2020-11-30 00:10:53,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:53,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:10:53,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:10:53,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:10:53,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:10:53,294 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-30 00:10:53,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:10:53,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2020-11-30 00:10:53,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046166400] [2020-11-30 00:10:53,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-30 00:10:53,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:53,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-30 00:10:53,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2020-11-30 00:10:53,299 INFO L87 Difference]: Start difference. First operand 366 states and 427 transitions. Second operand 17 states. [2020-11-30 00:10:53,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:53,937 INFO L93 Difference]: Finished difference Result 961 states and 1132 transitions. [2020-11-30 00:10:53,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-30 00:10:53,937 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 37 [2020-11-30 00:10:53,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:53,942 INFO L225 Difference]: With dead ends: 961 [2020-11-30 00:10:53,942 INFO L226 Difference]: Without dead ends: 685 [2020-11-30 00:10:53,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=346, Invalid=710, Unknown=0, NotChecked=0, Total=1056 [2020-11-30 00:10:53,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-11-30 00:10:53,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 381. [2020-11-30 00:10:53,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-11-30 00:10:53,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 441 transitions. [2020-11-30 00:10:53,987 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 441 transitions. Word has length 37 [2020-11-30 00:10:53,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:53,988 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 441 transitions. [2020-11-30 00:10:53,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-30 00:10:53,988 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 441 transitions. [2020-11-30 00:10:53,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-30 00:10:53,989 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:53,989 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:54,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-30 00:10:54,204 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:54,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:54,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1834977191, now seen corresponding path program 3 times [2020-11-30 00:10:54,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:54,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505287784] [2020-11-30 00:10:54,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:54,407 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:10:54,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505287784] [2020-11-30 00:10:54,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515655692] [2020-11-30 00:10:54,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:54,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-30 00:10:54,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:10:54,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 00:10:54,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:10:54,622 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:10:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-11-30 00:10:54,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:10:54,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 19 [2020-11-30 00:10:54,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962738816] [2020-11-30 00:10:54,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:10:54,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:54,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:10:54,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-11-30 00:10:54,673 INFO L87 Difference]: Start difference. First operand 381 states and 441 transitions. Second operand 8 states. [2020-11-30 00:10:54,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:54,932 INFO L93 Difference]: Finished difference Result 503 states and 579 transitions. [2020-11-30 00:10:54,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 00:10:54,933 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-11-30 00:10:54,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:54,937 INFO L225 Difference]: With dead ends: 503 [2020-11-30 00:10:54,937 INFO L226 Difference]: Without dead ends: 501 [2020-11-30 00:10:54,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2020-11-30 00:10:54,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-11-30 00:10:54,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 381. [2020-11-30 00:10:54,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-11-30 00:10:54,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 441 transitions. [2020-11-30 00:10:54,979 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 441 transitions. Word has length 40 [2020-11-30 00:10:54,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:54,979 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 441 transitions. [2020-11-30 00:10:54,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:10:54,980 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 441 transitions. [2020-11-30 00:10:54,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-30 00:10:54,980 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:54,980 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:55,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-30 00:10:55,194 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:55,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:55,194 INFO L82 PathProgramCache]: Analyzing trace with hash 277636137, now seen corresponding path program 1 times [2020-11-30 00:10:55,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:55,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921902694] [2020-11-30 00:10:55,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:55,270 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-11-30 00:10:55,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921902694] [2020-11-30 00:10:55,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:10:55,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:10:55,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199666864] [2020-11-30 00:10:55,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:10:55,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:55,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:10:55,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:10:55,273 INFO L87 Difference]: Start difference. First operand 381 states and 441 transitions. Second operand 5 states. [2020-11-30 00:10:55,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:55,360 INFO L93 Difference]: Finished difference Result 643 states and 748 transitions. [2020-11-30 00:10:55,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:10:55,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-11-30 00:10:55,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:55,364 INFO L225 Difference]: With dead ends: 643 [2020-11-30 00:10:55,364 INFO L226 Difference]: Without dead ends: 513 [2020-11-30 00:10:55,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:10:55,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-11-30 00:10:55,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 436. [2020-11-30 00:10:55,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-11-30 00:10:55,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 509 transitions. [2020-11-30 00:10:55,405 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 509 transitions. Word has length 40 [2020-11-30 00:10:55,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:55,406 INFO L481 AbstractCegarLoop]: Abstraction has 436 states and 509 transitions. [2020-11-30 00:10:55,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:10:55,406 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 509 transitions. [2020-11-30 00:10:55,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-11-30 00:10:55,407 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:55,408 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:55,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-30 00:10:55,408 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:55,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:55,409 INFO L82 PathProgramCache]: Analyzing trace with hash -652636381, now seen corresponding path program 1 times [2020-11-30 00:10:55,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:55,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319227543] [2020-11-30 00:10:55,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 263 proven. 117 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-11-30 00:10:55,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319227543] [2020-11-30 00:10:55,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46007422] [2020-11-30 00:10:55,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:55,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:10:55,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:10:55,975 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 263 proven. 117 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-11-30 00:10:55,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:10:55,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2020-11-30 00:10:55,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84041002] [2020-11-30 00:10:55,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-30 00:10:55,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:55,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-30 00:10:55,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=298, Unknown=0, NotChecked=0, Total=506 [2020-11-30 00:10:55,985 INFO L87 Difference]: Start difference. First operand 436 states and 509 transitions. Second operand 23 states. [2020-11-30 00:10:56,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:56,301 INFO L93 Difference]: Finished difference Result 1063 states and 1234 transitions. [2020-11-30 00:10:56,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 00:10:56,301 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 75 [2020-11-30 00:10:56,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:56,306 INFO L225 Difference]: With dead ends: 1063 [2020-11-30 00:10:56,307 INFO L226 Difference]: Without dead ends: 726 [2020-11-30 00:10:56,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=208, Invalid=298, Unknown=0, NotChecked=0, Total=506 [2020-11-30 00:10:56,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2020-11-30 00:10:56,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 484. [2020-11-30 00:10:56,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-11-30 00:10:56,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 563 transitions. [2020-11-30 00:10:56,357 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 563 transitions. Word has length 75 [2020-11-30 00:10:56,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:56,358 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 563 transitions. [2020-11-30 00:10:56,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-30 00:10:56,358 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 563 transitions. [2020-11-30 00:10:56,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-30 00:10:56,360 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:56,360 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:56,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:56,584 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:56,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:56,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1252948011, now seen corresponding path program 2 times [2020-11-30 00:10:56,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:56,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110862525] [2020-11-30 00:10:56,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:56,798 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 322 proven. 145 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-11-30 00:10:56,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110862525] [2020-11-30 00:10:56,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386525918] [2020-11-30 00:10:56,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:56,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:10:56,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:10:56,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-30 00:10:56,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:10:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 322 proven. 145 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-11-30 00:10:57,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:10:57,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2020-11-30 00:10:57,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830975551] [2020-11-30 00:10:57,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-30 00:10:57,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:57,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-30 00:10:57,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=355, Unknown=0, NotChecked=0, Total=600 [2020-11-30 00:10:57,146 INFO L87 Difference]: Start difference. First operand 484 states and 563 transitions. Second operand 25 states. [2020-11-30 00:10:57,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:57,461 INFO L93 Difference]: Finished difference Result 1147 states and 1329 transitions. [2020-11-30 00:10:57,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 00:10:57,462 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 81 [2020-11-30 00:10:57,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:57,467 INFO L225 Difference]: With dead ends: 1147 [2020-11-30 00:10:57,468 INFO L226 Difference]: Without dead ends: 774 [2020-11-30 00:10:57,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=355, Unknown=0, NotChecked=0, Total=600 [2020-11-30 00:10:57,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2020-11-30 00:10:57,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 532. [2020-11-30 00:10:57,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2020-11-30 00:10:57,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 617 transitions. [2020-11-30 00:10:57,556 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 617 transitions. Word has length 81 [2020-11-30 00:10:57,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:57,556 INFO L481 AbstractCegarLoop]: Abstraction has 532 states and 617 transitions. [2020-11-30 00:10:57,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-11-30 00:10:57,557 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 617 transitions. [2020-11-30 00:10:57,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-11-30 00:10:57,561 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:57,561 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:57,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2020-11-30 00:10:57,790 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:57,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:57,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1478646493, now seen corresponding path program 3 times [2020-11-30 00:10:57,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:57,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952526466] [2020-11-30 00:10:57,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 387 proven. 176 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-11-30 00:10:58,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952526466] [2020-11-30 00:10:58,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251240546] [2020-11-30 00:10:58,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:58,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-30 00:10:58,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:10:58,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:10:58,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:10:58,161 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:10:58,161 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:10:58,216 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 413 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2020-11-30 00:10:58,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:10:58,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2020-11-30 00:10:58,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282126982] [2020-11-30 00:10:58,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:10:58,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:58,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:10:58,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-11-30 00:10:58,222 INFO L87 Difference]: Start difference. First operand 532 states and 617 transitions. Second operand 5 states. [2020-11-30 00:10:58,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:58,356 INFO L93 Difference]: Finished difference Result 534 states and 618 transitions. [2020-11-30 00:10:58,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:10:58,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-11-30 00:10:58,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:58,359 INFO L225 Difference]: With dead ends: 534 [2020-11-30 00:10:58,360 INFO L226 Difference]: Without dead ends: 412 [2020-11-30 00:10:58,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2020-11-30 00:10:58,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-11-30 00:10:58,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-11-30 00:10:58,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-11-30 00:10:58,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 485 transitions. [2020-11-30 00:10:58,403 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 485 transitions. Word has length 87 [2020-11-30 00:10:58,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:58,404 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 485 transitions. [2020-11-30 00:10:58,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:10:58,404 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 485 transitions. [2020-11-30 00:10:58,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-11-30 00:10:58,406 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:58,406 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 20, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:58,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:58,630 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:58,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:58,631 INFO L82 PathProgramCache]: Analyzing trace with hash 386675427, now seen corresponding path program 1 times [2020-11-30 00:10:58,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:58,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109196163] [2020-11-30 00:10:58,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:58,894 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 387 proven. 176 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-11-30 00:10:58,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109196163] [2020-11-30 00:10:58,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958217827] [2020-11-30 00:10:58,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:10:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:10:58,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 00:10:58,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:10:59,228 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 387 proven. 176 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-11-30 00:10:59,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:10:59,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2020-11-30 00:10:59,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995290893] [2020-11-30 00:10:59,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-30 00:10:59,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:10:59,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-30 00:10:59,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=417, Unknown=0, NotChecked=0, Total=702 [2020-11-30 00:10:59,233 INFO L87 Difference]: Start difference. First operand 412 states and 485 transitions. Second operand 27 states. [2020-11-30 00:10:59,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:10:59,644 INFO L93 Difference]: Finished difference Result 1008 states and 1176 transitions. [2020-11-30 00:10:59,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-30 00:10:59,645 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 87 [2020-11-30 00:10:59,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:10:59,648 INFO L225 Difference]: With dead ends: 1008 [2020-11-30 00:10:59,649 INFO L226 Difference]: Without dead ends: 687 [2020-11-30 00:10:59,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=285, Invalid=417, Unknown=0, NotChecked=0, Total=702 [2020-11-30 00:10:59,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2020-11-30 00:10:59,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 451. [2020-11-30 00:10:59,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2020-11-30 00:10:59,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 530 transitions. [2020-11-30 00:10:59,698 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 530 transitions. Word has length 87 [2020-11-30 00:10:59,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:10:59,698 INFO L481 AbstractCegarLoop]: Abstraction has 451 states and 530 transitions. [2020-11-30 00:10:59,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-11-30 00:10:59,698 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 530 transitions. [2020-11-30 00:10:59,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-11-30 00:10:59,699 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:10:59,700 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 22, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:10:59,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-30 00:10:59,914 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:10:59,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:10:59,914 INFO L82 PathProgramCache]: Analyzing trace with hash 72058927, now seen corresponding path program 2 times [2020-11-30 00:10:59,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:10:59,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729954262] [2020-11-30 00:10:59,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:10:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:00,138 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 458 proven. 210 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2020-11-30 00:11:00,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729954262] [2020-11-30 00:11:00,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708820295] [2020-11-30 00:11:00,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:00,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:11:00,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:11:00,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 00:11:00,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:00,410 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 458 proven. 210 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2020-11-30 00:11:00,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:11:00,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2020-11-30 00:11:00,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043722043] [2020-11-30 00:11:00,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-30 00:11:00,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:00,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-30 00:11:00,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=484, Unknown=0, NotChecked=0, Total=812 [2020-11-30 00:11:00,413 INFO L87 Difference]: Start difference. First operand 451 states and 530 transitions. Second operand 29 states. [2020-11-30 00:11:00,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:00,748 INFO L93 Difference]: Finished difference Result 1077 states and 1256 transitions. [2020-11-30 00:11:00,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-30 00:11:00,749 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 93 [2020-11-30 00:11:00,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:00,751 INFO L225 Difference]: With dead ends: 1077 [2020-11-30 00:11:00,752 INFO L226 Difference]: Without dead ends: 726 [2020-11-30 00:11:00,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=328, Invalid=484, Unknown=0, NotChecked=0, Total=812 [2020-11-30 00:11:00,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2020-11-30 00:11:00,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 490. [2020-11-30 00:11:00,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-11-30 00:11:00,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 575 transitions. [2020-11-30 00:11:00,798 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 575 transitions. Word has length 93 [2020-11-30 00:11:00,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:00,798 INFO L481 AbstractCegarLoop]: Abstraction has 490 states and 575 transitions. [2020-11-30 00:11:00,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-11-30 00:11:00,798 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 575 transitions. [2020-11-30 00:11:00,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-11-30 00:11:00,799 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:00,800 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 24, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:01,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:01,022 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:01,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:01,023 INFO L82 PathProgramCache]: Analyzing trace with hash -282538141, now seen corresponding path program 3 times [2020-11-30 00:11:01,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:01,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894483269] [2020-11-30 00:11:01,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:01,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 535 proven. 247 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-11-30 00:11:01,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894483269] [2020-11-30 00:11:01,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934832932] [2020-11-30 00:11:01,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:01,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-30 00:11:01,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:11:01,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-30 00:11:01,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:01,587 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:11:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 37 proven. 541 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2020-11-30 00:11:01,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:11:01,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 24 [2020-11-30 00:11:01,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332176622] [2020-11-30 00:11:01,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-30 00:11:01,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:01,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-30 00:11:01,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2020-11-30 00:11:01,679 INFO L87 Difference]: Start difference. First operand 490 states and 575 transitions. Second operand 24 states. [2020-11-30 00:11:04,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:04,314 INFO L93 Difference]: Finished difference Result 2006 states and 2342 transitions. [2020-11-30 00:11:04,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-11-30 00:11:04,315 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 99 [2020-11-30 00:11:04,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:04,323 INFO L225 Difference]: With dead ends: 2006 [2020-11-30 00:11:04,323 INFO L226 Difference]: Without dead ends: 1625 [2020-11-30 00:11:04,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2190 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1574, Invalid=5908, Unknown=0, NotChecked=0, Total=7482 [2020-11-30 00:11:04,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2020-11-30 00:11:04,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 788. [2020-11-30 00:11:04,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 788 states. [2020-11-30 00:11:04,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 925 transitions. [2020-11-30 00:11:04,442 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 925 transitions. Word has length 99 [2020-11-30 00:11:04,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:04,442 INFO L481 AbstractCegarLoop]: Abstraction has 788 states and 925 transitions. [2020-11-30 00:11:04,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-30 00:11:04,443 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 925 transitions. [2020-11-30 00:11:04,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-11-30 00:11:04,447 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:04,447 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 24, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:04,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-30 00:11:04,662 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:04,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:04,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1426993773, now seen corresponding path program 1 times [2020-11-30 00:11:04,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:04,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519162424] [2020-11-30 00:11:04,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:05,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 49 proven. 861 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-11-30 00:11:05,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519162424] [2020-11-30 00:11:05,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969125287] [2020-11-30 00:11:05,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:05,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 00:11:05,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:05,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 618 proven. 287 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2020-11-30 00:11:05,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:11:05,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2020-11-30 00:11:05,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26284377] [2020-11-30 00:11:05,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-30 00:11:05,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:05,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-30 00:11:05,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=633, Unknown=0, NotChecked=0, Total=1056 [2020-11-30 00:11:05,480 INFO L87 Difference]: Start difference. First operand 788 states and 925 transitions. Second operand 33 states. [2020-11-30 00:11:06,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:06,008 INFO L93 Difference]: Finished difference Result 1833 states and 2135 transitions. [2020-11-30 00:11:06,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-30 00:11:06,008 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 105 [2020-11-30 00:11:06,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:06,015 INFO L225 Difference]: With dead ends: 1833 [2020-11-30 00:11:06,016 INFO L226 Difference]: Without dead ends: 1163 [2020-11-30 00:11:06,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=423, Invalid=633, Unknown=0, NotChecked=0, Total=1056 [2020-11-30 00:11:06,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2020-11-30 00:11:06,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 827. [2020-11-30 00:11:06,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2020-11-30 00:11:06,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 970 transitions. [2020-11-30 00:11:06,133 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 970 transitions. Word has length 105 [2020-11-30 00:11:06,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:06,134 INFO L481 AbstractCegarLoop]: Abstraction has 827 states and 970 transitions. [2020-11-30 00:11:06,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-11-30 00:11:06,134 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 970 transitions. [2020-11-30 00:11:06,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-30 00:11:06,137 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:06,137 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 26, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:06,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-30 00:11:06,362 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:06,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:06,362 INFO L82 PathProgramCache]: Analyzing trace with hash -2105332251, now seen corresponding path program 2 times [2020-11-30 00:11:06,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:06,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040131130] [2020-11-30 00:11:06,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:06,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 52 proven. 990 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2020-11-30 00:11:06,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040131130] [2020-11-30 00:11:06,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257018318] [2020-11-30 00:11:06,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:06,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:11:06,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:11:06,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-30 00:11:06,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:07,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 707 proven. 330 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2020-11-30 00:11:07,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:11:07,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2020-11-30 00:11:07,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618366798] [2020-11-30 00:11:07,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-30 00:11:07,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:07,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-30 00:11:07,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=715, Unknown=0, NotChecked=0, Total=1190 [2020-11-30 00:11:07,245 INFO L87 Difference]: Start difference. First operand 827 states and 970 transitions. Second operand 35 states. [2020-11-30 00:11:07,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:07,689 INFO L93 Difference]: Finished difference Result 1937 states and 2258 transitions. [2020-11-30 00:11:07,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-30 00:11:07,690 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 111 [2020-11-30 00:11:07,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:07,696 INFO L225 Difference]: With dead ends: 1937 [2020-11-30 00:11:07,696 INFO L226 Difference]: Without dead ends: 1237 [2020-11-30 00:11:07,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=475, Invalid=715, Unknown=0, NotChecked=0, Total=1190 [2020-11-30 00:11:07,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2020-11-30 00:11:07,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 884. [2020-11-30 00:11:07,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-11-30 00:11:07,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1036 transitions. [2020-11-30 00:11:07,808 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1036 transitions. Word has length 111 [2020-11-30 00:11:07,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:07,808 INFO L481 AbstractCegarLoop]: Abstraction has 884 states and 1036 transitions. [2020-11-30 00:11:07,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-11-30 00:11:07,808 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1036 transitions. [2020-11-30 00:11:07,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-11-30 00:11:07,810 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:07,810 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 28, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:08,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-11-30 00:11:08,011 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:08,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:08,011 INFO L82 PathProgramCache]: Analyzing trace with hash -346558611, now seen corresponding path program 3 times [2020-11-30 00:11:08,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:08,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835945992] [2020-11-30 00:11:08,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:08,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 55 proven. 1128 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2020-11-30 00:11:08,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835945992] [2020-11-30 00:11:08,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291502305] [2020-11-30 00:11:08,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:08,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-30 00:11:08,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:11:08,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-30 00:11:08,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:08,722 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:11:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 46 proven. 808 refuted. 0 times theorem prover too weak. 706 trivial. 0 not checked. [2020-11-30 00:11:08,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:11:08,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9] total 27 [2020-11-30 00:11:08,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423217287] [2020-11-30 00:11:08,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-30 00:11:08,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:08,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-30 00:11:08,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2020-11-30 00:11:08,802 INFO L87 Difference]: Start difference. First operand 884 states and 1036 transitions. Second operand 27 states. [2020-11-30 00:11:11,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:11,575 INFO L93 Difference]: Finished difference Result 2623 states and 3058 transitions. [2020-11-30 00:11:11,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-11-30 00:11:11,575 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 117 [2020-11-30 00:11:11,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:11,582 INFO L225 Difference]: With dead ends: 2623 [2020-11-30 00:11:11,583 INFO L226 Difference]: Without dead ends: 1875 [2020-11-30 00:11:11,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3164 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2204, Invalid=8098, Unknown=0, NotChecked=0, Total=10302 [2020-11-30 00:11:11,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2020-11-30 00:11:11,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 964. [2020-11-30 00:11:11,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2020-11-30 00:11:11,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1128 transitions. [2020-11-30 00:11:11,720 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1128 transitions. Word has length 117 [2020-11-30 00:11:11,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:11,720 INFO L481 AbstractCegarLoop]: Abstraction has 964 states and 1128 transitions. [2020-11-30 00:11:11,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-11-30 00:11:11,720 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1128 transitions. [2020-11-30 00:11:11,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-11-30 00:11:11,722 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:11,723 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 28, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:11,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-11-30 00:11:11,936 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:11,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:11,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1079437793, now seen corresponding path program 4 times [2020-11-30 00:11:11,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:11,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977301400] [2020-11-30 00:11:11,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1759 backedges. 903 proven. 425 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2020-11-30 00:11:12,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977301400] [2020-11-30 00:11:12,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445565866] [2020-11-30 00:11:12,248 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:12,293 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 00:11:12,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:11:12,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-30 00:11:12,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:12,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1759 backedges. 1143 proven. 356 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-11-30 00:11:12,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:11:12,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25] total 44 [2020-11-30 00:11:12,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414954356] [2020-11-30 00:11:12,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-11-30 00:11:12,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:12,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-11-30 00:11:12,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=1472, Unknown=0, NotChecked=0, Total=1892 [2020-11-30 00:11:12,918 INFO L87 Difference]: Start difference. First operand 964 states and 1128 transitions. Second operand 44 states. [2020-11-30 00:11:15,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:15,070 INFO L93 Difference]: Finished difference Result 2645 states and 3021 transitions. [2020-11-30 00:11:15,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-11-30 00:11:15,070 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 123 [2020-11-30 00:11:15,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:15,076 INFO L225 Difference]: With dead ends: 2645 [2020-11-30 00:11:15,077 INFO L226 Difference]: Without dead ends: 1826 [2020-11-30 00:11:15,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2624 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2126, Invalid=7380, Unknown=0, NotChecked=0, Total=9506 [2020-11-30 00:11:15,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2020-11-30 00:11:15,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 899. [2020-11-30 00:11:15,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2020-11-30 00:11:15,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1042 transitions. [2020-11-30 00:11:15,207 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1042 transitions. Word has length 123 [2020-11-30 00:11:15,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:15,207 INFO L481 AbstractCegarLoop]: Abstraction has 899 states and 1042 transitions. [2020-11-30 00:11:15,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-11-30 00:11:15,207 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1042 transitions. [2020-11-30 00:11:15,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-11-30 00:11:15,209 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:15,210 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 28, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:15,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-11-30 00:11:15,426 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:15,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:15,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1980620711, now seen corresponding path program 1 times [2020-11-30 00:11:15,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:15,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389137687] [2020-11-30 00:11:15,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:15,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 1010 proven. 477 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2020-11-30 00:11:15,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389137687] [2020-11-30 00:11:15,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751928606] [2020-11-30 00:11:15,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:15,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-30 00:11:15,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:16,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 1010 proven. 477 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2020-11-30 00:11:16,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:11:16,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 40 [2020-11-30 00:11:16,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560472052] [2020-11-30 00:11:16,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-11-30 00:11:16,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:16,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-11-30 00:11:16,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=991, Unknown=0, NotChecked=0, Total=1640 [2020-11-30 00:11:16,180 INFO L87 Difference]: Start difference. First operand 899 states and 1042 transitions. Second operand 41 states. [2020-11-30 00:11:16,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:16,597 INFO L93 Difference]: Finished difference Result 1727 states and 2021 transitions. [2020-11-30 00:11:16,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-30 00:11:16,597 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 129 [2020-11-30 00:11:16,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:16,601 INFO L225 Difference]: With dead ends: 1727 [2020-11-30 00:11:16,601 INFO L226 Difference]: Without dead ends: 979 [2020-11-30 00:11:16,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=649, Invalid=991, Unknown=0, NotChecked=0, Total=1640 [2020-11-30 00:11:16,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2020-11-30 00:11:16,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 947. [2020-11-30 00:11:16,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 947 states. [2020-11-30 00:11:16,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1096 transitions. [2020-11-30 00:11:16,719 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1096 transitions. Word has length 129 [2020-11-30 00:11:16,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:16,720 INFO L481 AbstractCegarLoop]: Abstraction has 947 states and 1096 transitions. [2020-11-30 00:11:16,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-11-30 00:11:16,720 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1096 transitions. [2020-11-30 00:11:16,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-11-30 00:11:16,722 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:16,722 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 30, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:16,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:16,935 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:16,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:16,936 INFO L82 PathProgramCache]: Analyzing trace with hash -473379613, now seen corresponding path program 2 times [2020-11-30 00:11:16,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:16,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997116844] [2020-11-30 00:11:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2193 backedges. 1123 proven. 532 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2020-11-30 00:11:17,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997116844] [2020-11-30 00:11:17,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415718394] [2020-11-30 00:11:17,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:17,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:11:17,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:11:17,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 00:11:17,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:17,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2193 backedges. 6 proven. 503 refuted. 0 times theorem prover too weak. 1684 trivial. 0 not checked. [2020-11-30 00:11:17,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:11:17,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 9] total 29 [2020-11-30 00:11:17,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113598971] [2020-11-30 00:11:17,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-30 00:11:17,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:17,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-30 00:11:17,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=512, Unknown=0, NotChecked=0, Total=870 [2020-11-30 00:11:17,457 INFO L87 Difference]: Start difference. First operand 947 states and 1096 transitions. Second operand 30 states. [2020-11-30 00:11:18,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:18,550 INFO L93 Difference]: Finished difference Result 3524 states and 3976 transitions. [2020-11-30 00:11:18,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-30 00:11:18,551 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 135 [2020-11-30 00:11:18,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:18,560 INFO L225 Difference]: With dead ends: 3524 [2020-11-30 00:11:18,560 INFO L226 Difference]: Without dead ends: 2737 [2020-11-30 00:11:18,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1413, Invalid=2877, Unknown=0, NotChecked=0, Total=4290 [2020-11-30 00:11:18,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2020-11-30 00:11:18,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 1234. [2020-11-30 00:11:18,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1234 states. [2020-11-30 00:11:18,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1408 transitions. [2020-11-30 00:11:18,686 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1408 transitions. Word has length 135 [2020-11-30 00:11:18,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:18,687 INFO L481 AbstractCegarLoop]: Abstraction has 1234 states and 1408 transitions. [2020-11-30 00:11:18,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-11-30 00:11:18,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1408 transitions. [2020-11-30 00:11:18,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-30 00:11:18,689 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:18,690 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 30, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:18,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:18,914 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:18,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:18,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1433947435, now seen corresponding path program 3 times [2020-11-30 00:11:18,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:18,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138126148] [2020-11-30 00:11:18,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:19,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2428 backedges. 1793 proven. 0 refuted. 0 times theorem prover too weak. 635 trivial. 0 not checked. [2020-11-30 00:11:19,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138126148] [2020-11-30 00:11:19,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:11:19,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-11-30 00:11:19,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047142595] [2020-11-30 00:11:19,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-30 00:11:19,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:19,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-30 00:11:19,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-11-30 00:11:19,147 INFO L87 Difference]: Start difference. First operand 1234 states and 1408 transitions. Second operand 18 states. [2020-11-30 00:11:19,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:19,611 INFO L93 Difference]: Finished difference Result 4880 states and 5386 transitions. [2020-11-30 00:11:19,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-30 00:11:19,614 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 141 [2020-11-30 00:11:19,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:19,630 INFO L225 Difference]: With dead ends: 4880 [2020-11-30 00:11:19,630 INFO L226 Difference]: Without dead ends: 4017 [2020-11-30 00:11:19,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-11-30 00:11:19,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4017 states. [2020-11-30 00:11:19,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4017 to 1252. [2020-11-30 00:11:19,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1252 states. [2020-11-30 00:11:19,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1432 transitions. [2020-11-30 00:11:19,783 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1432 transitions. Word has length 141 [2020-11-30 00:11:19,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:19,784 INFO L481 AbstractCegarLoop]: Abstraction has 1252 states and 1432 transitions. [2020-11-30 00:11:19,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-30 00:11:19,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1432 transitions. [2020-11-30 00:11:19,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-30 00:11:19,786 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:19,787 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 24, 16, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:19,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-11-30 00:11:19,787 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:19,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:19,787 INFO L82 PathProgramCache]: Analyzing trace with hash 20205549, now seen corresponding path program 5 times [2020-11-30 00:11:19,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:19,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950272234] [2020-11-30 00:11:19,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2428 backedges. 5 proven. 637 refuted. 0 times theorem prover too weak. 1786 trivial. 0 not checked. [2020-11-30 00:11:19,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950272234] [2020-11-30 00:11:19,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846337599] [2020-11-30 00:11:19,936 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:20,014 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2020-11-30 00:11:20,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:11:20,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-30 00:11:20,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2428 backedges. 1518 proven. 607 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-11-30 00:11:20,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:11:20,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 28] total 37 [2020-11-30 00:11:20,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348824420] [2020-11-30 00:11:20,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-30 00:11:20,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:20,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-30 00:11:20,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1034, Unknown=0, NotChecked=0, Total=1332 [2020-11-30 00:11:20,658 INFO L87 Difference]: Start difference. First operand 1252 states and 1432 transitions. Second operand 37 states. [2020-11-30 00:11:22,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:22,065 INFO L93 Difference]: Finished difference Result 3012 states and 3352 transitions. [2020-11-30 00:11:22,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-30 00:11:22,065 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 141 [2020-11-30 00:11:22,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:22,073 INFO L225 Difference]: With dead ends: 3012 [2020-11-30 00:11:22,073 INFO L226 Difference]: Without dead ends: 2222 [2020-11-30 00:11:22,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=951, Invalid=3605, Unknown=0, NotChecked=0, Total=4556 [2020-11-30 00:11:22,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2020-11-30 00:11:22,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 1497. [2020-11-30 00:11:22,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1497 states. [2020-11-30 00:11:22,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 1696 transitions. [2020-11-30 00:11:22,238 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 1696 transitions. Word has length 141 [2020-11-30 00:11:22,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:22,238 INFO L481 AbstractCegarLoop]: Abstraction has 1497 states and 1696 transitions. [2020-11-30 00:11:22,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-11-30 00:11:22,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 1696 transitions. [2020-11-30 00:11:22,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-30 00:11:22,254 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:22,254 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 25, 15, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:22,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:22,482 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:22,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:22,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1072429653, now seen corresponding path program 6 times [2020-11-30 00:11:22,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:22,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87268395] [2020-11-30 00:11:22,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:22,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2428 backedges. 5 proven. 739 refuted. 0 times theorem prover too weak. 1684 trivial. 0 not checked. [2020-11-30 00:11:22,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87268395] [2020-11-30 00:11:22,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980389435] [2020-11-30 00:11:22,634 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:22,686 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-11-30 00:11:22,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:11:22,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:11:22,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:22,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2428 backedges. 686 proven. 68 refuted. 0 times theorem prover too weak. 1674 trivial. 0 not checked. [2020-11-30 00:11:22,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:11:22,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 16 [2020-11-30 00:11:22,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889085361] [2020-11-30 00:11:22,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-30 00:11:22,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:22,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-30 00:11:22,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-11-30 00:11:22,806 INFO L87 Difference]: Start difference. First operand 1497 states and 1696 transitions. Second operand 16 states. [2020-11-30 00:11:23,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:23,982 INFO L93 Difference]: Finished difference Result 3741 states and 4246 transitions. [2020-11-30 00:11:23,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-30 00:11:23,982 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 141 [2020-11-30 00:11:23,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:23,994 INFO L225 Difference]: With dead ends: 3741 [2020-11-30 00:11:23,994 INFO L226 Difference]: Without dead ends: 2965 [2020-11-30 00:11:23,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=926, Invalid=2734, Unknown=0, NotChecked=0, Total=3660 [2020-11-30 00:11:24,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-11-30 00:11:24,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1975. [2020-11-30 00:11:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2020-11-30 00:11:24,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 2299 transitions. [2020-11-30 00:11:24,222 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 2299 transitions. Word has length 141 [2020-11-30 00:11:24,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:24,223 INFO L481 AbstractCegarLoop]: Abstraction has 1975 states and 2299 transitions. [2020-11-30 00:11:24,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-30 00:11:24,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 2299 transitions. [2020-11-30 00:11:24,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-30 00:11:24,225 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:24,226 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 38, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:24,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-11-30 00:11:24,442 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:24,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:24,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1860892757, now seen corresponding path program 4 times [2020-11-30 00:11:24,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:24,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404702439] [2020-11-30 00:11:24,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:25,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2428 backedges. 0 proven. 1838 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-11-30 00:11:25,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404702439] [2020-11-30 00:11:25,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44174815] [2020-11-30 00:11:25,294 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:25,343 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 00:11:25,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:11:25,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 58 conjunts are in the unsatisfiable core [2020-11-30 00:11:25,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:27,639 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:11:27,640 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:11:27,642 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:11:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2428 backedges. 532 proven. 1896 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:27,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:11:27,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 49] total 75 [2020-11-30 00:11:27,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598664619] [2020-11-30 00:11:27,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-11-30 00:11:27,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:27,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-11-30 00:11:27,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=837, Invalid=4713, Unknown=0, NotChecked=0, Total=5550 [2020-11-30 00:11:27,748 INFO L87 Difference]: Start difference. First operand 1975 states and 2299 transitions. Second operand 75 states. [2020-11-30 00:11:32,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:32,975 INFO L93 Difference]: Finished difference Result 4707 states and 5430 transitions. [2020-11-30 00:11:32,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-11-30 00:11:32,977 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 141 [2020-11-30 00:11:32,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:32,986 INFO L225 Difference]: With dead ends: 4707 [2020-11-30 00:11:32,987 INFO L226 Difference]: Without dead ends: 3710 [2020-11-30 00:11:32,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6991 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=2805, Invalid=19845, Unknown=0, NotChecked=0, Total=22650 [2020-11-30 00:11:32,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2020-11-30 00:11:33,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 2120. [2020-11-30 00:11:33,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2120 states. [2020-11-30 00:11:33,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2120 states to 2120 states and 2489 transitions. [2020-11-30 00:11:33,202 INFO L78 Accepts]: Start accepts. Automaton has 2120 states and 2489 transitions. Word has length 141 [2020-11-30 00:11:33,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:33,202 INFO L481 AbstractCegarLoop]: Abstraction has 2120 states and 2489 transitions. [2020-11-30 00:11:33,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-11-30 00:11:33,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2120 states and 2489 transitions. [2020-11-30 00:11:33,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-30 00:11:33,205 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:33,206 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 39, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:33,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-11-30 00:11:33,426 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:33,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:33,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1671679383, now seen corresponding path program 1 times [2020-11-30 00:11:33,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:33,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284424545] [2020-11-30 00:11:33,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:34,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2428 backedges. 587 proven. 1841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:34,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284424545] [2020-11-30 00:11:34,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230496806] [2020-11-30 00:11:34,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:34,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 42 conjunts are in the unsatisfiable core [2020-11-30 00:11:34,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:35,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2428 backedges. 677 proven. 1751 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:11:35,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:11:35,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 64 [2020-11-30 00:11:35,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611448122] [2020-11-30 00:11:35,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-11-30 00:11:35,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:35,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-11-30 00:11:35,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=3084, Unknown=0, NotChecked=0, Total=4032 [2020-11-30 00:11:35,391 INFO L87 Difference]: Start difference. First operand 2120 states and 2489 transitions. Second operand 64 states. [2020-11-30 00:11:38,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:38,054 INFO L93 Difference]: Finished difference Result 3673 states and 4351 transitions. [2020-11-30 00:11:38,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-11-30 00:11:38,055 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 141 [2020-11-30 00:11:38,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:38,059 INFO L225 Difference]: With dead ends: 3673 [2020-11-30 00:11:38,060 INFO L226 Difference]: Without dead ends: 2255 [2020-11-30 00:11:38,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3003 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2253, Invalid=8459, Unknown=0, NotChecked=0, Total=10712 [2020-11-30 00:11:38,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2020-11-30 00:11:38,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2154. [2020-11-30 00:11:38,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2154 states. [2020-11-30 00:11:38,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 2395 transitions. [2020-11-30 00:11:38,239 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 2395 transitions. Word has length 141 [2020-11-30 00:11:38,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:38,239 INFO L481 AbstractCegarLoop]: Abstraction has 2154 states and 2395 transitions. [2020-11-30 00:11:38,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-11-30 00:11:38,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 2395 transitions. [2020-11-30 00:11:38,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-30 00:11:38,241 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:38,242 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:38,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-11-30 00:11:38,454 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:38,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:38,454 INFO L82 PathProgramCache]: Analyzing trace with hash -291605655, now seen corresponding path program 1 times [2020-11-30 00:11:38,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:38,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199639741] [2020-11-30 00:11:38,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2428 backedges. 2 proven. 1246 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2020-11-30 00:11:38,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199639741] [2020-11-30 00:11:38,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862496528] [2020-11-30 00:11:38,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:38,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:11:38,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:38,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2428 backedges. 2 proven. 1246 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2020-11-30 00:11:38,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:11:38,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-11-30 00:11:38,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809437417] [2020-11-30 00:11:38,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 00:11:38,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:38,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 00:11:38,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:11:38,727 INFO L87 Difference]: Start difference. First operand 2154 states and 2395 transitions. Second operand 9 states. [2020-11-30 00:11:38,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:38,961 INFO L93 Difference]: Finished difference Result 2535 states and 2801 transitions. [2020-11-30 00:11:38,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:11:38,961 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 141 [2020-11-30 00:11:38,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:38,964 INFO L225 Difference]: With dead ends: 2535 [2020-11-30 00:11:38,964 INFO L226 Difference]: Without dead ends: 2387 [2020-11-30 00:11:38,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:11:38,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2020-11-30 00:11:39,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 2228. [2020-11-30 00:11:39,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2228 states. [2020-11-30 00:11:39,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 2474 transitions. [2020-11-30 00:11:39,136 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 2474 transitions. Word has length 141 [2020-11-30 00:11:39,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:39,137 INFO L481 AbstractCegarLoop]: Abstraction has 2228 states and 2474 transitions. [2020-11-30 00:11:39,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 00:11:39,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 2474 transitions. [2020-11-30 00:11:39,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-11-30 00:11:39,140 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:39,140 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 40, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:39,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-11-30 00:11:39,354 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:39,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:39,354 INFO L82 PathProgramCache]: Analyzing trace with hash -859985945, now seen corresponding path program 2 times [2020-11-30 00:11:39,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:39,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903812823] [2020-11-30 00:11:39,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:39,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 721 proven. 1238 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2020-11-30 00:11:39,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903812823] [2020-11-30 00:11:39,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629778140] [2020-11-30 00:11:39,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:39,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:11:39,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:11:39,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-30 00:11:39,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:40,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 1959 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2020-11-30 00:11:40,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:11:40,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 44 [2020-11-30 00:11:40,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199351528] [2020-11-30 00:11:40,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-30 00:11:40,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:40,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-30 00:11:40,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=720, Invalid=1260, Unknown=0, NotChecked=0, Total=1980 [2020-11-30 00:11:40,795 INFO L87 Difference]: Start difference. First operand 2228 states and 2474 transitions. Second operand 24 states. [2020-11-30 00:11:41,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:41,200 INFO L93 Difference]: Finished difference Result 3783 states and 4169 transitions. [2020-11-30 00:11:41,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-30 00:11:41,201 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 144 [2020-11-30 00:11:41,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:41,204 INFO L225 Difference]: With dead ends: 3783 [2020-11-30 00:11:41,205 INFO L226 Difference]: Without dead ends: 1876 [2020-11-30 00:11:41,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=720, Invalid=1260, Unknown=0, NotChecked=0, Total=1980 [2020-11-30 00:11:41,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2020-11-30 00:11:41,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1794. [2020-11-30 00:11:41,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1794 states. [2020-11-30 00:11:41,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 1964 transitions. [2020-11-30 00:11:41,373 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 1964 transitions. Word has length 144 [2020-11-30 00:11:41,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:41,373 INFO L481 AbstractCegarLoop]: Abstraction has 1794 states and 1964 transitions. [2020-11-30 00:11:41,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-30 00:11:41,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 1964 transitions. [2020-11-30 00:11:41,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-11-30 00:11:41,376 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:41,376 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 57, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:41,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-11-30 00:11:41,576 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:41,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:41,577 INFO L82 PathProgramCache]: Analyzing trace with hash -895738187, now seen corresponding path program 4 times [2020-11-30 00:11:41,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:41,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374122158] [2020-11-30 00:11:41,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5514 backedges. 61 proven. 4267 refuted. 0 times theorem prover too weak. 1186 trivial. 0 not checked. [2020-11-30 00:11:42,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374122158] [2020-11-30 00:11:42,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156795903] [2020-11-30 00:11:42,456 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:42,537 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 00:11:42,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:11:42,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 62 conjunts are in the unsatisfiable core [2020-11-30 00:11:42,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:44,482 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:11:44,483 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:11:44,483 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:11:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 5514 backedges. 532 proven. 4392 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-11-30 00:11:44,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:11:44,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 50] total 75 [2020-11-30 00:11:44,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066676494] [2020-11-30 00:11:44,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-11-30 00:11:44,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:44,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-11-30 00:11:44,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1092, Invalid=4458, Unknown=0, NotChecked=0, Total=5550 [2020-11-30 00:11:44,633 INFO L87 Difference]: Start difference. First operand 1794 states and 1964 transitions. Second operand 75 states. [2020-11-30 00:11:49,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:49,808 INFO L93 Difference]: Finished difference Result 2971 states and 3244 transitions. [2020-11-30 00:11:49,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-11-30 00:11:49,809 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 209 [2020-11-30 00:11:49,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:49,811 INFO L225 Difference]: With dead ends: 2971 [2020-11-30 00:11:49,811 INFO L226 Difference]: Without dead ends: 768 [2020-11-30 00:11:49,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10292 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=4372, Invalid=24020, Unknown=0, NotChecked=0, Total=28392 [2020-11-30 00:11:49,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2020-11-30 00:11:49,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 346. [2020-11-30 00:11:49,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-11-30 00:11:49,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 353 transitions. [2020-11-30 00:11:49,835 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 353 transitions. Word has length 209 [2020-11-30 00:11:49,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:49,835 INFO L481 AbstractCegarLoop]: Abstraction has 346 states and 353 transitions. [2020-11-30 00:11:49,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-11-30 00:11:49,835 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 353 transitions. [2020-11-30 00:11:49,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-11-30 00:11:49,836 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:49,836 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:50,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:50,037 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:50,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:50,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1983381995, now seen corresponding path program 2 times [2020-11-30 00:11:50,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:50,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741709180] [2020-11-30 00:11:50,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:50,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5514 backedges. 4 proven. 3740 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2020-11-30 00:11:50,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741709180] [2020-11-30 00:11:50,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76444741] [2020-11-30 00:11:50,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:50,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:11:50,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:11:50,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:11:50,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:50,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5514 backedges. 4 proven. 3740 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2020-11-30 00:11:50,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:11:50,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-11-30 00:11:50,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774510451] [2020-11-30 00:11:50,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 00:11:50,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:50,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 00:11:50,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:11:50,570 INFO L87 Difference]: Start difference. First operand 346 states and 353 transitions. Second operand 11 states. [2020-11-30 00:11:50,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:50,655 INFO L93 Difference]: Finished difference Result 484 states and 495 transitions. [2020-11-30 00:11:50,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:11:50,655 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 209 [2020-11-30 00:11:50,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:50,656 INFO L225 Difference]: With dead ends: 484 [2020-11-30 00:11:50,656 INFO L226 Difference]: Without dead ends: 414 [2020-11-30 00:11:50,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:11:50,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-11-30 00:11:50,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2020-11-30 00:11:50,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-11-30 00:11:50,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 422 transitions. [2020-11-30 00:11:50,677 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 422 transitions. Word has length 209 [2020-11-30 00:11:50,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:50,678 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 422 transitions. [2020-11-30 00:11:50,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 00:11:50,678 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 422 transitions. [2020-11-30 00:11:50,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-11-30 00:11:50,679 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:50,679 INFO L422 BasicCegarLoop]: trace histogram [80, 80, 80, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:50,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-11-30 00:11:50,880 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:50,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:50,880 INFO L82 PathProgramCache]: Analyzing trace with hash 173371245, now seen corresponding path program 3 times [2020-11-30 00:11:50,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:50,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941066588] [2020-11-30 00:11:50,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:51,207 INFO L134 CoverageAnalysis]: Checked inductivity of 9848 backedges. 6 proven. 7482 refuted. 0 times theorem prover too weak. 2360 trivial. 0 not checked. [2020-11-30 00:11:51,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941066588] [2020-11-30 00:11:51,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822659109] [2020-11-30 00:11:51,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:51,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2020-11-30 00:11:51,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:11:51,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:11:51,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:51,615 INFO L134 CoverageAnalysis]: Checked inductivity of 9848 backedges. 6 proven. 7482 refuted. 0 times theorem prover too weak. 2360 trivial. 0 not checked. [2020-11-30 00:11:51,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:11:51,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-11-30 00:11:51,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778640811] [2020-11-30 00:11:51,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 00:11:51,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:51,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 00:11:51,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:11:51,617 INFO L87 Difference]: Start difference. First operand 414 states and 422 transitions. Second operand 13 states. [2020-11-30 00:11:51,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:51,764 INFO L93 Difference]: Finished difference Result 552 states and 564 transitions. [2020-11-30 00:11:51,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:11:51,765 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 277 [2020-11-30 00:11:51,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:51,766 INFO L225 Difference]: With dead ends: 552 [2020-11-30 00:11:51,766 INFO L226 Difference]: Without dead ends: 482 [2020-11-30 00:11:51,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:11:51,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-11-30 00:11:51,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2020-11-30 00:11:51,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2020-11-30 00:11:51,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 491 transitions. [2020-11-30 00:11:51,801 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 491 transitions. Word has length 277 [2020-11-30 00:11:51,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:51,801 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 491 transitions. [2020-11-30 00:11:51,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 00:11:51,802 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 491 transitions. [2020-11-30 00:11:51,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-11-30 00:11:51,804 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:51,804 INFO L422 BasicCegarLoop]: trace histogram [100, 100, 100, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:52,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-11-30 00:11:52,030 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:52,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:52,030 INFO L82 PathProgramCache]: Analyzing trace with hash 628571119, now seen corresponding path program 4 times [2020-11-30 00:11:52,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:52,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306078541] [2020-11-30 00:11:52,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:52,442 INFO L134 CoverageAnalysis]: Checked inductivity of 15430 backedges. 8 proven. 12472 refuted. 0 times theorem prover too weak. 2950 trivial. 0 not checked. [2020-11-30 00:11:52,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306078541] [2020-11-30 00:11:52,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218586178] [2020-11-30 00:11:52,443 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:52,567 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 00:11:52,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:11:52,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-30 00:11:52,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:53,477 INFO L134 CoverageAnalysis]: Checked inductivity of 15430 backedges. 540 proven. 12530 refuted. 0 times theorem prover too weak. 2360 trivial. 0 not checked. [2020-11-30 00:11:53,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:11:53,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 29] total 36 [2020-11-30 00:11:53,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317197708] [2020-11-30 00:11:53,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-30 00:11:53,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:53,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-30 00:11:53,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=916, Unknown=0, NotChecked=0, Total=1260 [2020-11-30 00:11:53,479 INFO L87 Difference]: Start difference. First operand 482 states and 491 transitions. Second operand 36 states. [2020-11-30 00:11:54,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:54,197 INFO L93 Difference]: Finished difference Result 621 states and 634 transitions. [2020-11-30 00:11:54,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-30 00:11:54,198 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 345 [2020-11-30 00:11:54,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:54,199 INFO L225 Difference]: With dead ends: 621 [2020-11-30 00:11:54,199 INFO L226 Difference]: Without dead ends: 551 [2020-11-30 00:11:54,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1064, Invalid=2016, Unknown=0, NotChecked=0, Total=3080 [2020-11-30 00:11:54,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-11-30 00:11:54,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 550. [2020-11-30 00:11:54,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-11-30 00:11:54,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 560 transitions. [2020-11-30 00:11:54,225 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 560 transitions. Word has length 345 [2020-11-30 00:11:54,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:54,226 INFO L481 AbstractCegarLoop]: Abstraction has 550 states and 560 transitions. [2020-11-30 00:11:54,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-11-30 00:11:54,226 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 560 transitions. [2020-11-30 00:11:54,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-11-30 00:11:54,229 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:54,229 INFO L422 BasicCegarLoop]: trace histogram [120, 120, 120, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:54,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:54,429 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:54,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:54,430 INFO L82 PathProgramCache]: Analyzing trace with hash -908204175, now seen corresponding path program 5 times [2020-11-30 00:11:54,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:54,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215391350] [2020-11-30 00:11:54,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:54,973 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 10 proven. 18710 refuted. 0 times theorem prover too weak. 3540 trivial. 0 not checked. [2020-11-30 00:11:54,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215391350] [2020-11-30 00:11:54,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615388186] [2020-11-30 00:11:54,973 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:55,310 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 85 check-sat command(s) [2020-11-30 00:11:55,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:11:55,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-30 00:11:55,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:56,491 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 580 proven. 18730 refuted. 0 times theorem prover too weak. 2950 trivial. 0 not checked. [2020-11-30 00:11:56,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:11:56,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 31] total 39 [2020-11-30 00:11:56,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112605235] [2020-11-30 00:11:56,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-11-30 00:11:56,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:56,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-11-30 00:11:56,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=1089, Unknown=0, NotChecked=0, Total=1482 [2020-11-30 00:11:56,493 INFO L87 Difference]: Start difference. First operand 550 states and 560 transitions. Second operand 39 states. [2020-11-30 00:11:57,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:57,729 INFO L93 Difference]: Finished difference Result 689 states and 703 transitions. [2020-11-30 00:11:57,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-30 00:11:57,733 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 413 [2020-11-30 00:11:57,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:57,734 INFO L225 Difference]: With dead ends: 689 [2020-11-30 00:11:57,734 INFO L226 Difference]: Without dead ends: 619 [2020-11-30 00:11:57,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2182, Invalid=4138, Unknown=0, NotChecked=0, Total=6320 [2020-11-30 00:11:57,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-11-30 00:11:57,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 618. [2020-11-30 00:11:57,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-11-30 00:11:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 629 transitions. [2020-11-30 00:11:57,763 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 629 transitions. Word has length 413 [2020-11-30 00:11:57,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:57,764 INFO L481 AbstractCegarLoop]: Abstraction has 618 states and 629 transitions. [2020-11-30 00:11:57,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-11-30 00:11:57,764 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 629 transitions. [2020-11-30 00:11:57,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-11-30 00:11:57,766 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:57,767 INFO L422 BasicCegarLoop]: trace histogram [140, 140, 140, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:57,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-11-30 00:11:57,967 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:57,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:57,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1584795149, now seen corresponding path program 6 times [2020-11-30 00:11:57,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:57,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753504845] [2020-11-30 00:11:57,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:58,570 INFO L134 CoverageAnalysis]: Checked inductivity of 30338 backedges. 12 proven. 26196 refuted. 0 times theorem prover too weak. 4130 trivial. 0 not checked. [2020-11-30 00:11:58,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753504845] [2020-11-30 00:11:58,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78257067] [2020-11-30 00:11:58,570 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:58,817 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 65 check-sat command(s) [2020-11-30 00:11:58,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:11:58,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 00:11:58,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:59,477 INFO L134 CoverageAnalysis]: Checked inductivity of 30338 backedges. 12 proven. 26196 refuted. 0 times theorem prover too weak. 4130 trivial. 0 not checked. [2020-11-30 00:11:59,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:11:59,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2020-11-30 00:11:59,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184166497] [2020-11-30 00:11:59,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-30 00:11:59,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:59,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-30 00:11:59,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2020-11-30 00:11:59,479 INFO L87 Difference]: Start difference. First operand 618 states and 629 transitions. Second operand 19 states. [2020-11-30 00:11:59,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:59,630 INFO L93 Difference]: Finished difference Result 756 states and 771 transitions. [2020-11-30 00:11:59,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 00:11:59,631 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 481 [2020-11-30 00:11:59,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:59,633 INFO L225 Difference]: With dead ends: 756 [2020-11-30 00:11:59,633 INFO L226 Difference]: Without dead ends: 686 [2020-11-30 00:11:59,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2020-11-30 00:11:59,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-11-30 00:11:59,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2020-11-30 00:11:59,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2020-11-30 00:11:59,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 698 transitions. [2020-11-30 00:11:59,681 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 698 transitions. Word has length 481 [2020-11-30 00:11:59,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:59,682 INFO L481 AbstractCegarLoop]: Abstraction has 686 states and 698 transitions. [2020-11-30 00:11:59,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-30 00:11:59,682 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 698 transitions. [2020-11-30 00:11:59,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-11-30 00:11:59,686 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:59,686 INFO L422 BasicCegarLoop]: trace histogram [160, 160, 160, 8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:59,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:11:59,902 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:59,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:59,902 INFO L82 PathProgramCache]: Analyzing trace with hash 507239285, now seen corresponding path program 7 times [2020-11-30 00:11:59,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:59,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959214082] [2020-11-30 00:11:59,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:00,620 INFO L134 CoverageAnalysis]: Checked inductivity of 39664 backedges. 14 proven. 34930 refuted. 0 times theorem prover too weak. 4720 trivial. 0 not checked. [2020-11-30 00:12:00,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959214082] [2020-11-30 00:12:00,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213651832] [2020-11-30 00:12:00,621 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:12:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:00,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:12:00,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:12:01,500 INFO L134 CoverageAnalysis]: Checked inductivity of 39664 backedges. 14 proven. 34930 refuted. 0 times theorem prover too weak. 4720 trivial. 0 not checked. [2020-11-30 00:12:01,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:12:01,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2020-11-30 00:12:01,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566853945] [2020-11-30 00:12:01,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-30 00:12:01,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:12:01,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-30 00:12:01,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2020-11-30 00:12:01,503 INFO L87 Difference]: Start difference. First operand 686 states and 698 transitions. Second operand 21 states. [2020-11-30 00:12:01,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:01,689 INFO L93 Difference]: Finished difference Result 824 states and 840 transitions. [2020-11-30 00:12:01,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 00:12:01,689 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 549 [2020-11-30 00:12:01,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:01,691 INFO L225 Difference]: With dead ends: 824 [2020-11-30 00:12:01,691 INFO L226 Difference]: Without dead ends: 754 [2020-11-30 00:12:01,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2020-11-30 00:12:01,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2020-11-30 00:12:01,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2020-11-30 00:12:01,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2020-11-30 00:12:01,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 767 transitions. [2020-11-30 00:12:01,723 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 767 transitions. Word has length 549 [2020-11-30 00:12:01,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:01,724 INFO L481 AbstractCegarLoop]: Abstraction has 754 states and 767 transitions. [2020-11-30 00:12:01,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-30 00:12:01,724 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 767 transitions. [2020-11-30 00:12:01,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2020-11-30 00:12:01,728 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:01,729 INFO L422 BasicCegarLoop]: trace histogram [180, 180, 180, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:01,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-11-30 00:12:01,940 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:01,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:01,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1720441865, now seen corresponding path program 8 times [2020-11-30 00:12:01,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:01,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846721863] [2020-11-30 00:12:01,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:02,773 INFO L134 CoverageAnalysis]: Checked inductivity of 50238 backedges. 16 proven. 44912 refuted. 0 times theorem prover too weak. 5310 trivial. 0 not checked. [2020-11-30 00:12:02,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846721863] [2020-11-30 00:12:02,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148551289] [2020-11-30 00:12:02,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:12:02,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:12:02,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:12:02,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:12:02,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:12:04,000 INFO L134 CoverageAnalysis]: Checked inductivity of 50238 backedges. 16 proven. 44912 refuted. 0 times theorem prover too weak. 5310 trivial. 0 not checked. [2020-11-30 00:12:04,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:12:04,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2020-11-30 00:12:04,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979371550] [2020-11-30 00:12:04,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-30 00:12:04,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:12:04,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-30 00:12:04,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=298, Unknown=0, NotChecked=0, Total=506 [2020-11-30 00:12:04,002 INFO L87 Difference]: Start difference. First operand 754 states and 767 transitions. Second operand 23 states. [2020-11-30 00:12:04,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:04,151 INFO L93 Difference]: Finished difference Result 892 states and 909 transitions. [2020-11-30 00:12:04,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 00:12:04,151 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 617 [2020-11-30 00:12:04,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:04,153 INFO L225 Difference]: With dead ends: 892 [2020-11-30 00:12:04,153 INFO L226 Difference]: Without dead ends: 822 [2020-11-30 00:12:04,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=208, Invalid=298, Unknown=0, NotChecked=0, Total=506 [2020-11-30 00:12:04,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2020-11-30 00:12:04,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 822. [2020-11-30 00:12:04,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-11-30 00:12:04,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 836 transitions. [2020-11-30 00:12:04,188 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 836 transitions. Word has length 617 [2020-11-30 00:12:04,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:04,189 INFO L481 AbstractCegarLoop]: Abstraction has 822 states and 836 transitions. [2020-11-30 00:12:04,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-30 00:12:04,189 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 836 transitions. [2020-11-30 00:12:04,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2020-11-30 00:12:04,193 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:04,194 INFO L422 BasicCegarLoop]: trace histogram [200, 200, 200, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:04,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-11-30 00:12:04,394 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:04,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:04,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1953713017, now seen corresponding path program 9 times [2020-11-30 00:12:04,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:04,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788308250] [2020-11-30 00:12:04,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:05,364 INFO L134 CoverageAnalysis]: Checked inductivity of 62060 backedges. 18 proven. 56142 refuted. 0 times theorem prover too weak. 5900 trivial. 0 not checked. [2020-11-30 00:12:05,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788308250] [2020-11-30 00:12:05,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273337067] [2020-11-30 00:12:05,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:12:05,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2020-11-30 00:12:05,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:12:05,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-30 00:12:05,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:12:06,773 INFO L134 CoverageAnalysis]: Checked inductivity of 62060 backedges. 18 proven. 56142 refuted. 0 times theorem prover too weak. 5900 trivial. 0 not checked. [2020-11-30 00:12:06,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:12:06,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2020-11-30 00:12:06,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482687621] [2020-11-30 00:12:06,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-30 00:12:06,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:12:06,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-30 00:12:06,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=355, Unknown=0, NotChecked=0, Total=600 [2020-11-30 00:12:06,775 INFO L87 Difference]: Start difference. First operand 822 states and 836 transitions. Second operand 25 states. [2020-11-30 00:12:06,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:06,938 INFO L93 Difference]: Finished difference Result 960 states and 978 transitions. [2020-11-30 00:12:06,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 00:12:06,938 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 685 [2020-11-30 00:12:06,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:06,943 INFO L225 Difference]: With dead ends: 960 [2020-11-30 00:12:06,944 INFO L226 Difference]: Without dead ends: 890 [2020-11-30 00:12:06,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=355, Unknown=0, NotChecked=0, Total=600 [2020-11-30 00:12:06,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-11-30 00:12:07,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 890. [2020-11-30 00:12:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-11-30 00:12:07,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 905 transitions. [2020-11-30 00:12:07,007 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 905 transitions. Word has length 685 [2020-11-30 00:12:07,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:07,008 INFO L481 AbstractCegarLoop]: Abstraction has 890 states and 905 transitions. [2020-11-30 00:12:07,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-11-30 00:12:07,008 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 905 transitions. [2020-11-30 00:12:07,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2020-11-30 00:12:07,015 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:07,016 INFO L422 BasicCegarLoop]: trace histogram [220, 220, 220, 11, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:07,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-11-30 00:12:07,230 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:07,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:07,230 INFO L82 PathProgramCache]: Analyzing trace with hash 943313403, now seen corresponding path program 10 times [2020-11-30 00:12:07,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:07,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842078961] [2020-11-30 00:12:07,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:08,542 INFO L134 CoverageAnalysis]: Checked inductivity of 75130 backedges. 20 proven. 68620 refuted. 0 times theorem prover too weak. 6490 trivial. 0 not checked. [2020-11-30 00:12:08,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842078961] [2020-11-30 00:12:08,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54990150] [2020-11-30 00:12:08,542 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:12:08,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 00:12:08,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:12:08,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-30 00:12:08,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:12:10,922 INFO L134 CoverageAnalysis]: Checked inductivity of 75130 backedges. 552 proven. 68678 refuted. 0 times theorem prover too weak. 5900 trivial. 0 not checked. [2020-11-30 00:12:10,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:12:10,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 35] total 48 [2020-11-30 00:12:10,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573712694] [2020-11-30 00:12:10,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-11-30 00:12:10,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:12:10,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-11-30 00:12:10,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=1717, Unknown=0, NotChecked=0, Total=2256 [2020-11-30 00:12:10,924 INFO L87 Difference]: Start difference. First operand 890 states and 905 transitions. Second operand 48 states. [2020-11-30 00:12:11,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:11,679 INFO L93 Difference]: Finished difference Result 1029 states and 1048 transitions. [2020-11-30 00:12:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-30 00:12:11,680 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 753 [2020-11-30 00:12:11,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:11,686 INFO L225 Difference]: With dead ends: 1029 [2020-11-30 00:12:11,686 INFO L226 Difference]: Without dead ends: 959 [2020-11-30 00:12:11,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1499, Invalid=3057, Unknown=0, NotChecked=0, Total=4556 [2020-11-30 00:12:11,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-11-30 00:12:11,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 958. [2020-11-30 00:12:11,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 958 states. [2020-11-30 00:12:11,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 974 transitions. [2020-11-30 00:12:11,752 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 974 transitions. Word has length 753 [2020-11-30 00:12:11,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:11,753 INFO L481 AbstractCegarLoop]: Abstraction has 958 states and 974 transitions. [2020-11-30 00:12:11,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-11-30 00:12:11,754 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 974 transitions. [2020-11-30 00:12:11,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2020-11-30 00:12:11,762 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:11,762 INFO L422 BasicCegarLoop]: trace histogram [240, 240, 240, 12, 12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:11,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-11-30 00:12:11,986 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:11,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:11,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1249364099, now seen corresponding path program 11 times [2020-11-30 00:12:11,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:11,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964916223] [2020-11-30 00:12:11,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 89448 backedges. 22 proven. 82346 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2020-11-30 00:12:13,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964916223] [2020-11-30 00:12:13,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974342202] [2020-11-30 00:12:13,378 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:12:13,895 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 110 check-sat command(s) [2020-11-30 00:12:13,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:12:13,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-30 00:12:13,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:12:16,465 INFO L134 CoverageAnalysis]: Checked inductivity of 89448 backedges. 554 proven. 82404 refuted. 0 times theorem prover too weak. 6490 trivial. 0 not checked. [2020-11-30 00:12:16,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:12:16,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 36] total 50 [2020-11-30 00:12:16,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587622388] [2020-11-30 00:12:16,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-11-30 00:12:16,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:12:16,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-11-30 00:12:16,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=1914, Unknown=0, NotChecked=0, Total=2450 [2020-11-30 00:12:16,467 INFO L87 Difference]: Start difference. First operand 958 states and 974 transitions. Second operand 50 states. [2020-11-30 00:12:18,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:18,328 INFO L93 Difference]: Finished difference Result 1097 states and 1117 transitions. [2020-11-30 00:12:18,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-11-30 00:12:18,328 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 821 [2020-11-30 00:12:18,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:18,330 INFO L225 Difference]: With dead ends: 1097 [2020-11-30 00:12:18,330 INFO L226 Difference]: Without dead ends: 1027 [2020-11-30 00:12:18,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 895 GetRequests, 787 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3142 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4046, Invalid=7944, Unknown=0, NotChecked=0, Total=11990 [2020-11-30 00:12:18,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-11-30 00:12:18,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1026. [2020-11-30 00:12:18,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1026 states. [2020-11-30 00:12:18,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1043 transitions. [2020-11-30 00:12:18,375 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1043 transitions. Word has length 821 [2020-11-30 00:12:18,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:18,376 INFO L481 AbstractCegarLoop]: Abstraction has 1026 states and 1043 transitions. [2020-11-30 00:12:18,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-11-30 00:12:18,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1043 transitions. [2020-11-30 00:12:18,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2020-11-30 00:12:18,383 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:18,384 INFO L422 BasicCegarLoop]: trace histogram [260, 260, 260, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:18,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:12:18,584 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:18,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:18,585 INFO L82 PathProgramCache]: Analyzing trace with hash 618593279, now seen corresponding path program 12 times [2020-11-30 00:12:18,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:18,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226255542] [2020-11-30 00:12:18,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:20,165 INFO L134 CoverageAnalysis]: Checked inductivity of 105014 backedges. 24 proven. 97320 refuted. 0 times theorem prover too weak. 7670 trivial. 0 not checked. [2020-11-30 00:12:20,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226255542] [2020-11-30 00:12:20,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506861024] [2020-11-30 00:12:20,165 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:12:20,686 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 131 check-sat command(s) [2020-11-30 00:12:20,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:12:20,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-30 00:12:20,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:12:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 105014 backedges. 24 proven. 97320 refuted. 0 times theorem prover too weak. 7670 trivial. 0 not checked. [2020-11-30 00:12:22,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:12:22,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2020-11-30 00:12:22,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709368506] [2020-11-30 00:12:22,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-30 00:12:22,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:12:22,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-30 00:12:22,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=556, Unknown=0, NotChecked=0, Total=930 [2020-11-30 00:12:22,442 INFO L87 Difference]: Start difference. First operand 1026 states and 1043 transitions. Second operand 31 states. [2020-11-30 00:12:22,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:22,683 INFO L93 Difference]: Finished difference Result 1164 states and 1185 transitions. [2020-11-30 00:12:22,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-30 00:12:22,684 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 889 [2020-11-30 00:12:22,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:22,686 INFO L225 Difference]: With dead ends: 1164 [2020-11-30 00:12:22,686 INFO L226 Difference]: Without dead ends: 1094 [2020-11-30 00:12:22,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 904 GetRequests, 875 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=374, Invalid=556, Unknown=0, NotChecked=0, Total=930 [2020-11-30 00:12:22,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2020-11-30 00:12:22,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1094. [2020-11-30 00:12:22,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1094 states. [2020-11-30 00:12:22,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1112 transitions. [2020-11-30 00:12:22,765 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1112 transitions. Word has length 889 [2020-11-30 00:12:22,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:22,766 INFO L481 AbstractCegarLoop]: Abstraction has 1094 states and 1112 transitions. [2020-11-30 00:12:22,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-11-30 00:12:22,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1112 transitions. [2020-11-30 00:12:22,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2020-11-30 00:12:22,778 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:22,779 INFO L422 BasicCegarLoop]: trace histogram [280, 280, 280, 14, 14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:23,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-11-30 00:12:23,006 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:23,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:23,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1182703489, now seen corresponding path program 13 times [2020-11-30 00:12:23,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:23,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529197665] [2020-11-30 00:12:23,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:24,744 INFO L134 CoverageAnalysis]: Checked inductivity of 121828 backedges. 26 proven. 113542 refuted. 0 times theorem prover too weak. 8260 trivial. 0 not checked. [2020-11-30 00:12:24,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529197665] [2020-11-30 00:12:24,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174070237] [2020-11-30 00:12:24,744 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:12:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:24,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 1489 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 00:12:24,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:12:26,950 INFO L134 CoverageAnalysis]: Checked inductivity of 121828 backedges. 26 proven. 113542 refuted. 0 times theorem prover too weak. 8260 trivial. 0 not checked. [2020-11-30 00:12:26,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:12:26,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2020-11-30 00:12:26,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557779227] [2020-11-30 00:12:26,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-30 00:12:26,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:12:26,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-30 00:12:26,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=633, Unknown=0, NotChecked=0, Total=1056 [2020-11-30 00:12:26,953 INFO L87 Difference]: Start difference. First operand 1094 states and 1112 transitions. Second operand 33 states. [2020-11-30 00:12:27,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:27,201 INFO L93 Difference]: Finished difference Result 1232 states and 1254 transitions. [2020-11-30 00:12:27,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-30 00:12:27,202 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 957 [2020-11-30 00:12:27,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:27,207 INFO L225 Difference]: With dead ends: 1232 [2020-11-30 00:12:27,207 INFO L226 Difference]: Without dead ends: 1162 [2020-11-30 00:12:27,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 973 GetRequests, 942 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=423, Invalid=633, Unknown=0, NotChecked=0, Total=1056 [2020-11-30 00:12:27,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2020-11-30 00:12:27,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1162. [2020-11-30 00:12:27,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1162 states. [2020-11-30 00:12:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1181 transitions. [2020-11-30 00:12:27,289 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1181 transitions. Word has length 957 [2020-11-30 00:12:27,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:27,291 INFO L481 AbstractCegarLoop]: Abstraction has 1162 states and 1181 transitions. [2020-11-30 00:12:27,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-11-30 00:12:27,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1181 transitions. [2020-11-30 00:12:27,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1026 [2020-11-30 00:12:27,304 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:27,304 INFO L422 BasicCegarLoop]: trace histogram [300, 300, 300, 15, 15, 15, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:27,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-11-30 00:12:27,530 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:27,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:27,530 INFO L82 PathProgramCache]: Analyzing trace with hash -2107137533, now seen corresponding path program 14 times [2020-11-30 00:12:27,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:27,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423575288] [2020-11-30 00:12:27,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 139890 backedges. 28 proven. 131012 refuted. 0 times theorem prover too weak. 8850 trivial. 0 not checked. [2020-11-30 00:12:30,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423575288] [2020-11-30 00:12:30,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094823144] [2020-11-30 00:12:30,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:12:30,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:12:30,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:12:30,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 1591 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-30 00:12:30,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:12:32,470 INFO L134 CoverageAnalysis]: Checked inductivity of 139890 backedges. 28 proven. 131012 refuted. 0 times theorem prover too weak. 8850 trivial. 0 not checked. [2020-11-30 00:12:32,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:12:32,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2020-11-30 00:12:32,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7004058] [2020-11-30 00:12:32,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-30 00:12:32,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:12:32,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-30 00:12:32,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=715, Unknown=0, NotChecked=0, Total=1190 [2020-11-30 00:12:32,473 INFO L87 Difference]: Start difference. First operand 1162 states and 1181 transitions. Second operand 35 states. [2020-11-30 00:12:32,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:32,733 INFO L93 Difference]: Finished difference Result 1300 states and 1323 transitions. [2020-11-30 00:12:32,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-30 00:12:32,734 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 1025 [2020-11-30 00:12:32,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:32,737 INFO L225 Difference]: With dead ends: 1300 [2020-11-30 00:12:32,737 INFO L226 Difference]: Without dead ends: 1230 [2020-11-30 00:12:32,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1042 GetRequests, 1009 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=475, Invalid=715, Unknown=0, NotChecked=0, Total=1190 [2020-11-30 00:12:32,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-11-30 00:12:32,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1230. [2020-11-30 00:12:32,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1230 states. [2020-11-30 00:12:32,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1250 transitions. [2020-11-30 00:12:32,821 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1250 transitions. Word has length 1025 [2020-11-30 00:12:32,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:32,822 INFO L481 AbstractCegarLoop]: Abstraction has 1230 states and 1250 transitions. [2020-11-30 00:12:32,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-11-30 00:12:32,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1250 transitions. [2020-11-30 00:12:32,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1094 [2020-11-30 00:12:32,836 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:32,836 INFO L422 BasicCegarLoop]: trace histogram [320, 320, 320, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:33,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:12:33,050 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:33,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:33,050 INFO L82 PathProgramCache]: Analyzing trace with hash 140149637, now seen corresponding path program 15 times [2020-11-30 00:12:33,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:33,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899896644] [2020-11-30 00:12:33,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:35,234 INFO L134 CoverageAnalysis]: Checked inductivity of 159200 backedges. 30 proven. 149730 refuted. 0 times theorem prover too weak. 9440 trivial. 0 not checked. [2020-11-30 00:12:35,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899896644] [2020-11-30 00:12:35,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917588329] [2020-11-30 00:12:35,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:12:35,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 134 check-sat command(s) [2020-11-30 00:12:35,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:12:35,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-30 00:12:35,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:12:38,774 INFO L134 CoverageAnalysis]: Checked inductivity of 159200 backedges. 30 proven. 149730 refuted. 0 times theorem prover too weak. 9440 trivial. 0 not checked. [2020-11-30 00:12:38,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:12:38,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2020-11-30 00:12:38,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722146769] [2020-11-30 00:12:38,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-30 00:12:38,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:12:38,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-30 00:12:38,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=802, Unknown=0, NotChecked=0, Total=1332 [2020-11-30 00:12:38,777 INFO L87 Difference]: Start difference. First operand 1230 states and 1250 transitions. Second operand 37 states. [2020-11-30 00:12:39,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:39,069 INFO L93 Difference]: Finished difference Result 1368 states and 1392 transitions. [2020-11-30 00:12:39,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-30 00:12:39,070 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 1093 [2020-11-30 00:12:39,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:39,072 INFO L225 Difference]: With dead ends: 1368 [2020-11-30 00:12:39,072 INFO L226 Difference]: Without dead ends: 1298 [2020-11-30 00:12:39,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1111 GetRequests, 1076 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=530, Invalid=802, Unknown=0, NotChecked=0, Total=1332 [2020-11-30 00:12:39,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2020-11-30 00:12:39,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1298. [2020-11-30 00:12:39,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1298 states. [2020-11-30 00:12:39,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 1319 transitions. [2020-11-30 00:12:39,129 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 1319 transitions. Word has length 1093 [2020-11-30 00:12:39,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:39,130 INFO L481 AbstractCegarLoop]: Abstraction has 1298 states and 1319 transitions. [2020-11-30 00:12:39,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-11-30 00:12:39,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 1319 transitions. [2020-11-30 00:12:39,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1162 [2020-11-30 00:12:39,141 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:39,142 INFO L422 BasicCegarLoop]: trace histogram [340, 340, 340, 17, 17, 17, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:39,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-11-30 00:12:39,342 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:39,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:39,343 INFO L82 PathProgramCache]: Analyzing trace with hash -271072249, now seen corresponding path program 16 times [2020-11-30 00:12:39,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:39,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644844117] [2020-11-30 00:12:39,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:42,054 INFO L134 CoverageAnalysis]: Checked inductivity of 179758 backedges. 32 proven. 169696 refuted. 0 times theorem prover too weak. 10030 trivial. 0 not checked. [2020-11-30 00:12:42,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644844117] [2020-11-30 00:12:42,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659965855] [2020-11-30 00:12:42,055 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:12:42,308 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 00:12:42,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:12:42,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 1754 conjuncts, 40 conjunts are in the unsatisfiable core [2020-11-30 00:12:42,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:12:45,972 INFO L134 CoverageAnalysis]: Checked inductivity of 179758 backedges. 564 proven. 169754 refuted. 0 times theorem prover too weak. 9440 trivial. 0 not checked. [2020-11-30 00:12:45,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:12:45,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 41] total 60 [2020-11-30 00:12:45,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778523519] [2020-11-30 00:12:45,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-11-30 00:12:45,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:12:45,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-11-30 00:12:45,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=842, Invalid=2698, Unknown=0, NotChecked=0, Total=3540 [2020-11-30 00:12:45,975 INFO L87 Difference]: Start difference. First operand 1298 states and 1319 transitions. Second operand 60 states. [2020-11-30 00:12:46,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:46,808 INFO L93 Difference]: Finished difference Result 1437 states and 1462 transitions. [2020-11-30 00:12:46,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-30 00:12:46,809 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 1161 [2020-11-30 00:12:46,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:46,812 INFO L225 Difference]: With dead ends: 1437 [2020-11-30 00:12:46,812 INFO L226 Difference]: Without dead ends: 1367 [2020-11-30 00:12:46,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1200 GetRequests, 1122 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1537 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2042, Invalid=4278, Unknown=0, NotChecked=0, Total=6320 [2020-11-30 00:12:46,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2020-11-30 00:12:46,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1366. [2020-11-30 00:12:46,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1366 states. [2020-11-30 00:12:46,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 1388 transitions. [2020-11-30 00:12:46,906 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 1388 transitions. Word has length 1161 [2020-11-30 00:12:46,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:46,907 INFO L481 AbstractCegarLoop]: Abstraction has 1366 states and 1388 transitions. [2020-11-30 00:12:46,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-11-30 00:12:46,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 1388 transitions. [2020-11-30 00:12:46,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1230 [2020-11-30 00:12:46,923 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:46,924 INFO L422 BasicCegarLoop]: trace histogram [360, 360, 360, 18, 18, 18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:47,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:12:47,138 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:47,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:47,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1478484873, now seen corresponding path program 17 times [2020-11-30 00:12:47,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:47,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351150542] [2020-11-30 00:12:47,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:49,985 INFO L134 CoverageAnalysis]: Checked inductivity of 201564 backedges. 34 proven. 190910 refuted. 0 times theorem prover too weak. 10620 trivial. 0 not checked. [2020-11-30 00:12:49,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351150542] [2020-11-30 00:12:49,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264774920] [2020-11-30 00:12:49,986 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:12:51,135 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 156 check-sat command(s) [2020-11-30 00:12:51,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:12:51,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 1897 conjuncts, 43 conjunts are in the unsatisfiable core [2020-11-30 00:12:51,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:12:54,932 INFO L134 CoverageAnalysis]: Checked inductivity of 201564 backedges. 604 proven. 190930 refuted. 0 times theorem prover too weak. 10030 trivial. 0 not checked. [2020-11-30 00:12:54,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:12:54,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 43] total 63 [2020-11-30 00:12:54,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283662037] [2020-11-30 00:12:54,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-11-30 00:12:54,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:12:54,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-11-30 00:12:54,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=891, Invalid=3015, Unknown=0, NotChecked=0, Total=3906 [2020-11-30 00:12:54,934 INFO L87 Difference]: Start difference. First operand 1366 states and 1388 transitions. Second operand 63 states. [2020-11-30 00:12:57,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:57,064 INFO L93 Difference]: Finished difference Result 1505 states and 1531 transitions. [2020-11-30 00:12:57,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-11-30 00:12:57,064 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 1229 [2020-11-30 00:12:57,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:57,068 INFO L225 Difference]: With dead ends: 1505 [2020-11-30 00:12:57,068 INFO L226 Difference]: Without dead ends: 1435 [2020-11-30 00:12:57,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1311 GetRequests, 1188 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4019 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=5366, Invalid=10134, Unknown=0, NotChecked=0, Total=15500 [2020-11-30 00:12:57,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2020-11-30 00:12:57,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1434. [2020-11-30 00:12:57,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1434 states. [2020-11-30 00:12:57,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 1457 transitions. [2020-11-30 00:12:57,167 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 1457 transitions. Word has length 1229 [2020-11-30 00:12:57,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:57,168 INFO L481 AbstractCegarLoop]: Abstraction has 1434 states and 1457 transitions. [2020-11-30 00:12:57,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-11-30 00:12:57,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 1457 transitions. [2020-11-30 00:12:57,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1298 [2020-11-30 00:12:57,186 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:57,186 INFO L422 BasicCegarLoop]: trace histogram [380, 380, 380, 19, 19, 19, 19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:57,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-11-30 00:12:57,402 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:57,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:57,402 INFO L82 PathProgramCache]: Analyzing trace with hash -2009898485, now seen corresponding path program 18 times [2020-11-30 00:12:57,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:57,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501115679] [2020-11-30 00:12:57,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:13:00,669 INFO L134 CoverageAnalysis]: Checked inductivity of 224618 backedges. 36 proven. 213372 refuted. 0 times theorem prover too weak. 11210 trivial. 0 not checked. [2020-11-30 00:13:00,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501115679] [2020-11-30 00:13:00,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217489822] [2020-11-30 00:13:00,670 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:13:01,476 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 139 check-sat command(s) [2020-11-30 00:13:01,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:13:01,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 1535 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-30 00:13:01,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:13:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 224618 backedges. 36 proven. 213372 refuted. 0 times theorem prover too weak. 11210 trivial. 0 not checked. [2020-11-30 00:13:04,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:13:04,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 42 [2020-11-30 00:13:04,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615803767] [2020-11-30 00:13:04,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-11-30 00:13:04,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:13:04,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-11-30 00:13:04,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=713, Invalid=1093, Unknown=0, NotChecked=0, Total=1806 [2020-11-30 00:13:04,994 INFO L87 Difference]: Start difference. First operand 1434 states and 1457 transitions. Second operand 43 states. [2020-11-30 00:13:05,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:13:05,439 INFO L93 Difference]: Finished difference Result 1572 states and 1599 transitions. [2020-11-30 00:13:05,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-30 00:13:05,440 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 1297 [2020-11-30 00:13:05,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:13:05,443 INFO L225 Difference]: With dead ends: 1572 [2020-11-30 00:13:05,443 INFO L226 Difference]: Without dead ends: 1502 [2020-11-30 00:13:05,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1318 GetRequests, 1277 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=713, Invalid=1093, Unknown=0, NotChecked=0, Total=1806 [2020-11-30 00:13:05,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2020-11-30 00:13:05,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1502. [2020-11-30 00:13:05,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1502 states. [2020-11-30 00:13:05,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 1526 transitions. [2020-11-30 00:13:05,546 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 1526 transitions. Word has length 1297 [2020-11-30 00:13:05,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:13:05,547 INFO L481 AbstractCegarLoop]: Abstraction has 1502 states and 1526 transitions. [2020-11-30 00:13:05,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-11-30 00:13:05,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 1526 transitions. [2020-11-30 00:13:05,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1366 [2020-11-30 00:13:05,567 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:13:05,568 INFO L422 BasicCegarLoop]: trace histogram [400, 400, 400, 20, 20, 20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:13:05,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:13:05,782 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:13:05,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:13:05,782 INFO L82 PathProgramCache]: Analyzing trace with hash 248692621, now seen corresponding path program 19 times [2020-11-30 00:13:05,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:13:05,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847789281] [2020-11-30 00:13:05,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:13:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:13:06,201 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:13:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:13:06,519 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:13:06,930 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:13:06,930 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:13:06,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-11-30 00:13:07,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:13:07 BoogieIcfgContainer [2020-11-30 00:13:07,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:13:07,489 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:13:07,489 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:13:07,489 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:13:07,490 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:10:43" (3/4) ... [2020-11-30 00:13:07,492 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:13:08,065 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7c60217e-3be8-4d07-ab3e-0ed6efb63696/bin/uautomizer/witness.graphml [2020-11-30 00:13:08,066 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:13:08,067 INFO L168 Benchmark]: Toolchain (without parser) took 145134.74 ms. Allocated memory was 107.0 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 81.1 MB in the beginning and 953.6 MB in the end (delta: -872.4 MB). Peak memory consumption was 977.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:13:08,068 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 79.7 MB. Free memory is still 42.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:13:08,068 INFO L168 Benchmark]: CACSL2BoogieTranslator took 431.41 ms. Allocated memory is still 107.0 MB. Free memory was 81.1 MB in the beginning and 84.1 MB in the end (delta: -3.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:13:08,069 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.16 ms. Allocated memory is still 107.0 MB. Free memory was 84.1 MB in the beginning and 82.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:13:08,069 INFO L168 Benchmark]: Boogie Preprocessor took 40.71 ms. Allocated memory is still 107.0 MB. Free memory was 82.5 MB in the beginning and 81.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:13:08,069 INFO L168 Benchmark]: RCFGBuilder took 414.25 ms. Allocated memory is still 107.0 MB. Free memory was 81.4 MB in the beginning and 67.8 MB in the end (delta: 13.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:13:08,070 INFO L168 Benchmark]: TraceAbstraction took 143608.89 ms. Allocated memory was 107.0 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 67.3 MB in the beginning and 1.0 GB in the end (delta: -971.2 MB). Peak memory consumption was 882.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:13:08,070 INFO L168 Benchmark]: Witness Printer took 576.72 ms. Allocated memory is still 2.0 GB. Free memory was 1.0 GB in the beginning and 953.6 MB in the end (delta: 84.9 MB). Peak memory consumption was 83.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:13:08,072 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 79.7 MB. Free memory is still 42.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 431.41 ms. Allocated memory is still 107.0 MB. Free memory was 81.1 MB in the beginning and 84.1 MB in the end (delta: -3.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.16 ms. Allocated memory is still 107.0 MB. Free memory was 84.1 MB in the beginning and 82.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.71 ms. Allocated memory is still 107.0 MB. Free memory was 82.5 MB in the beginning and 81.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 414.25 ms. Allocated memory is still 107.0 MB. Free memory was 81.4 MB in the beginning and 67.8 MB in the end (delta: 13.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 143608.89 ms. Allocated memory was 107.0 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 67.3 MB in the beginning and 1.0 GB in the end (delta: -971.2 MB). Peak memory consumption was 882.8 MB. Max. memory is 16.1 GB. * Witness Printer took 576.72 ms. Allocated memory is still 2.0 GB. Free memory was 1.0 GB in the beginning and 953.6 MB in the end (delta: 84.9 MB). Peak memory consumption was 83.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] int last ; [L18] int SIZE = 20; VAL [last=0, SIZE=20] [L20] last = __VERIFIER_nondet_int() [L6] COND FALSE !(!cond) VAL [last=22, SIZE=20] [L22] int a=0,b=0,c=0,st=0,d=0; VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND FALSE !(d == SIZE) VAL [last=22, SIZE=20] [L11] COND FALSE !(!(cond)) VAL [last=22, SIZE=20] [L23] COND TRUE 1 [L24] st=1 [L25] c=0 VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND TRUE c=last) VAL [last=22, SIZE=20] [L25] c++ VAL [last=22, SIZE=20] [L25] COND FALSE !(c=SIZE [L35] d++ VAL [last=22, SIZE=20] [L37] COND TRUE d == SIZE [L38] a = 0 [L39] b = 1 VAL [last=22, SIZE=20] [L11] COND TRUE !(cond) VAL [last=22, SIZE=20] [L3] __assert_fail("0", "nested_delay_notd2.c", 3, "reach_error") VAL [last=22, SIZE=20] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 142.9s, OverallIterations: 56, TraceHistogramMax: 400, AutomataDifference: 42.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 761 SDtfs, 11592 SDslu, 4262 SDs, 0 SdLazy, 20200 SolverSat, 1403 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16872 GetRequests, 14742 SyntacticMatches, 4 SemanticMatches, 2126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49920 ImplicationChecksByTransitivity, 47.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2228occurred in iteration=36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.8s AutomataMinimizationTime, 55 MinimizatonAttempts, 13882 StatesRemovedByMinimization, 42 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.3s SsaConstructionTime, 8.1s SatisfiabilityAnalysisTime, 57.5s InterpolantComputationTime, 32481 NumberOfCodeBlocks, 31186 NumberOfCodeBlocksAsserted, 1091 NumberOfCheckSat, 31014 ConstructedInterpolants, 0 QuantifiedInterpolants, 141239026 SizeOfPredicates, 143 NumberOfNonLiveVariables, 24241 ConjunctsInSsa, 857 ConjunctsInUnsatCore, 102 InterpolantComputations, 13 PerfectInterpolantSequences, 262365/3136850 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 incorrect! Received shutdown request...