./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gj2007.c.i.p+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/gj2007.c.i.p+nlh-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 2b1624bcee836a6ef84f0c5a49c428b8da4ed56b .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:55:09,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:55:09,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:55:09,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:55:09,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:55:09,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:55:09,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:55:09,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:55:09,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:55:09,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:55:09,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:55:09,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:55:09,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:55:09,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:55:09,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:55:09,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:55:09,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:55:09,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:55:09,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:55:09,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:55:09,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:55:09,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:55:09,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:55:09,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:55:09,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:55:09,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:55:09,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:55:09,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:55:09,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:55:09,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:55:09,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:55:09,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:55:09,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:55:09,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:55:09,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:55:09,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:55:09,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:55:09,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:55:09,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:55:09,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:55:09,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:55:09,487 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:55:09,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:55:09,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:55:09,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:55:09,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:55:09,533 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:55:09,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:55:09,533 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:55:09,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:55:09,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:55:09,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:55:09,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:55:09,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:55:09,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:55:09,536 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:55:09,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:55:09,537 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:55:09,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:55:09,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:55:09,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:55:09,538 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:55:09,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:55:09,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:55:09,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:55:09,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:55:09,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:55:09,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:55:09,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:55:09,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:55:09,540 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:55:09,540 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_67b87f00-a071-4f34-869a-d4bfe1fddae9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b1624bcee836a6ef84f0c5a49c428b8da4ed56b [2020-11-29 19:55:09,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:55:09,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:55:09,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:55:09,828 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:55:09,834 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:55:09,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/bin/uautomizer/../../sv-benchmarks/c/loop-lit/gj2007.c.i.p+nlh-reducer.c [2020-11-29 19:55:09,913 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/bin/uautomizer/data/0457e6eb2/0153475a87d64976a8c6b37a636c86b4/FLAGe1d047586 [2020-11-29 19:55:10,370 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:55:10,371 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/sv-benchmarks/c/loop-lit/gj2007.c.i.p+nlh-reducer.c [2020-11-29 19:55:10,402 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/bin/uautomizer/data/0457e6eb2/0153475a87d64976a8c6b37a636c86b4/FLAGe1d047586 [2020-11-29 19:55:10,748 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/bin/uautomizer/data/0457e6eb2/0153475a87d64976a8c6b37a636c86b4 [2020-11-29 19:55:10,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:55:10,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:55:10,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:55:10,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:55:10,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:55:10,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:55:10" (1/1) ... [2020-11-29 19:55:10,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56094f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:10, skipping insertion in model container [2020-11-29 19:55:10,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:55:10" (1/1) ... [2020-11-29 19:55:10,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:55:10,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:55:11,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:55:11,125 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:55:11,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:55:11,349 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:55:11,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:11 WrapperNode [2020-11-29 19:55:11,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:55:11,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:55:11,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:55:11,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:55:11,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:11" (1/1) ... [2020-11-29 19:55:11,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:11" (1/1) ... [2020-11-29 19:55:11,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:55:11,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:55:11,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:55:11,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:55:11,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:11" (1/1) ... [2020-11-29 19:55:11,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:11" (1/1) ... [2020-11-29 19:55:11,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:11" (1/1) ... [2020-11-29 19:55:11,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:11" (1/1) ... [2020-11-29 19:55:11,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:11" (1/1) ... [2020-11-29 19:55:11,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:11" (1/1) ... [2020-11-29 19:55:11,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:11" (1/1) ... [2020-11-29 19:55:11,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:55:11,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:55:11,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:55:11,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:55:11,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:55:11,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:55:11,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:55:11,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:55:11,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:55:12,493 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:55:12,493 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 19:55:12,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:55:12 BoogieIcfgContainer [2020-11-29 19:55:12,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:55:12,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:55:12,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:55:12,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:55:12,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:55:10" (1/3) ... [2020-11-29 19:55:12,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b540068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:55:12, skipping insertion in model container [2020-11-29 19:55:12,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:11" (2/3) ... [2020-11-29 19:55:12,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b540068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:55:12, skipping insertion in model container [2020-11-29 19:55:12,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:55:12" (3/3) ... [2020-11-29 19:55:12,505 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+nlh-reducer.c [2020-11-29 19:55:12,519 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:55:12,523 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:55:12,534 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:55:12,558 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:55:12,558 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:55:12,558 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:55:12,559 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:55:12,559 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:55:12,559 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:55:12,559 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:55:12,559 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:55:12,577 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states. [2020-11-29 19:55:12,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:12,591 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:12,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:12,592 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:12,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:12,598 INFO L82 PathProgramCache]: Analyzing trace with hash 2015652932, now seen corresponding path program 1 times [2020-11-29 19:55:12,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:12,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099999090] [2020-11-29 19:55:12,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:12,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:12,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099999090] [2020-11-29 19:55:12,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:12,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:55:12,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940581936] [2020-11-29 19:55:12,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:55:12,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:12,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:55:12,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:55:12,858 INFO L87 Difference]: Start difference. First operand 145 states. Second operand 3 states. [2020-11-29 19:55:13,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:13,480 INFO L93 Difference]: Finished difference Result 285 states and 555 transitions. [2020-11-29 19:55:13,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:55:13,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-11-29 19:55:13,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:13,492 INFO L225 Difference]: With dead ends: 285 [2020-11-29 19:55:13,492 INFO L226 Difference]: Without dead ends: 141 [2020-11-29 19:55:13,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:55:13,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-11-29 19:55:13,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-11-29 19:55:13,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 19:55:13,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 208 transitions. [2020-11-29 19:55:13,576 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 208 transitions. Word has length 139 [2020-11-29 19:55:13,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:13,576 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 208 transitions. [2020-11-29 19:55:13,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:55:13,577 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 208 transitions. [2020-11-29 19:55:13,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:13,579 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:13,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:13,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:55:13,580 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:13,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:13,581 INFO L82 PathProgramCache]: Analyzing trace with hash -2012326959, now seen corresponding path program 1 times [2020-11-29 19:55:13,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:13,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53676074] [2020-11-29 19:55:13,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:13,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:13,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53676074] [2020-11-29 19:55:13,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:13,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:55:13,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895896197] [2020-11-29 19:55:13,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:55:13,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:13,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:55:13,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:13,718 INFO L87 Difference]: Start difference. First operand 141 states and 208 transitions. Second operand 4 states. [2020-11-29 19:55:14,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:14,276 INFO L93 Difference]: Finished difference Result 276 states and 409 transitions. [2020-11-29 19:55:14,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:55:14,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-11-29 19:55:14,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:14,278 INFO L225 Difference]: With dead ends: 276 [2020-11-29 19:55:14,279 INFO L226 Difference]: Without dead ends: 141 [2020-11-29 19:55:14,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:55:14,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-11-29 19:55:14,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-11-29 19:55:14,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 19:55:14,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 207 transitions. [2020-11-29 19:55:14,290 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 207 transitions. Word has length 139 [2020-11-29 19:55:14,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:14,291 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 207 transitions. [2020-11-29 19:55:14,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:55:14,291 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 207 transitions. [2020-11-29 19:55:14,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:14,301 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:14,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:14,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:55:14,302 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:14,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:14,303 INFO L82 PathProgramCache]: Analyzing trace with hash 2117712243, now seen corresponding path program 1 times [2020-11-29 19:55:14,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:14,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891851609] [2020-11-29 19:55:14,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:14,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:14,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891851609] [2020-11-29 19:55:14,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:14,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:55:14,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627862746] [2020-11-29 19:55:14,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:55:14,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:14,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:55:14,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:55:14,435 INFO L87 Difference]: Start difference. First operand 141 states and 207 transitions. Second operand 3 states. [2020-11-29 19:55:15,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:15,131 INFO L93 Difference]: Finished difference Result 402 states and 598 transitions. [2020-11-29 19:55:15,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:55:15,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-11-29 19:55:15,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:15,134 INFO L225 Difference]: With dead ends: 402 [2020-11-29 19:55:15,134 INFO L226 Difference]: Without dead ends: 271 [2020-11-29 19:55:15,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:55:15,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-11-29 19:55:15,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2020-11-29 19:55:15,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-11-29 19:55:15,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 338 transitions. [2020-11-29 19:55:15,165 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 338 transitions. Word has length 139 [2020-11-29 19:55:15,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:15,166 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 338 transitions. [2020-11-29 19:55:15,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:55:15,166 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 338 transitions. [2020-11-29 19:55:15,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:15,168 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:15,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:15,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:55:15,169 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:15,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:15,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1438469737, now seen corresponding path program 1 times [2020-11-29 19:55:15,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:15,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799600543] [2020-11-29 19:55:15,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:15,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:15,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799600543] [2020-11-29 19:55:15,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:15,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 19:55:15,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772673156] [2020-11-29 19:55:15,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:55:15,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:15,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:55:15,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:55:15,422 INFO L87 Difference]: Start difference. First operand 271 states and 338 transitions. Second operand 6 states. [2020-11-29 19:55:16,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:16,173 INFO L93 Difference]: Finished difference Result 400 states and 467 transitions. [2020-11-29 19:55:16,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:55:16,173 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-11-29 19:55:16,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:16,175 INFO L225 Difference]: With dead ends: 400 [2020-11-29 19:55:16,175 INFO L226 Difference]: Without dead ends: 267 [2020-11-29 19:55:16,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:55:16,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-11-29 19:55:16,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2020-11-29 19:55:16,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-11-29 19:55:16,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 332 transitions. [2020-11-29 19:55:16,191 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 332 transitions. Word has length 139 [2020-11-29 19:55:16,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:16,194 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 332 transitions. [2020-11-29 19:55:16,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:55:16,194 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 332 transitions. [2020-11-29 19:55:16,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:16,196 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:16,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:16,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 19:55:16,198 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:16,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:16,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1640917444, now seen corresponding path program 1 times [2020-11-29 19:55:16,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:16,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586838684] [2020-11-29 19:55:16,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:16,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:16,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586838684] [2020-11-29 19:55:16,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:16,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 19:55:16,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753550208] [2020-11-29 19:55:16,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:55:16,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:16,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:55:16,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:55:16,326 INFO L87 Difference]: Start difference. First operand 267 states and 332 transitions. Second operand 8 states. [2020-11-29 19:55:16,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:16,946 INFO L93 Difference]: Finished difference Result 392 states and 457 transitions. [2020-11-29 19:55:16,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:55:16,946 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 139 [2020-11-29 19:55:16,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:16,948 INFO L225 Difference]: With dead ends: 392 [2020-11-29 19:55:16,948 INFO L226 Difference]: Without dead ends: 263 [2020-11-29 19:55:16,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:55:16,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-11-29 19:55:16,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2020-11-29 19:55:16,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-11-29 19:55:16,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 326 transitions. [2020-11-29 19:55:16,959 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 326 transitions. Word has length 139 [2020-11-29 19:55:16,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:16,965 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 326 transitions. [2020-11-29 19:55:16,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:55:16,965 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 326 transitions. [2020-11-29 19:55:16,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:16,967 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:16,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:16,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 19:55:16,967 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:16,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:16,968 INFO L82 PathProgramCache]: Analyzing trace with hash -948576486, now seen corresponding path program 1 times [2020-11-29 19:55:16,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:16,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730077581] [2020-11-29 19:55:16,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:17,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:17,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730077581] [2020-11-29 19:55:17,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:17,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-29 19:55:17,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93624392] [2020-11-29 19:55:17,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 19:55:17,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:17,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 19:55:17,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-11-29 19:55:17,237 INFO L87 Difference]: Start difference. First operand 263 states and 326 transitions. Second operand 12 states. [2020-11-29 19:55:18,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:18,541 INFO L93 Difference]: Finished difference Result 380 states and 443 transitions. [2020-11-29 19:55:18,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 19:55:18,541 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2020-11-29 19:55:18,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:18,543 INFO L225 Difference]: With dead ends: 380 [2020-11-29 19:55:18,543 INFO L226 Difference]: Without dead ends: 255 [2020-11-29 19:55:18,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-11-29 19:55:18,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-11-29 19:55:18,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2020-11-29 19:55:18,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-11-29 19:55:18,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 314 transitions. [2020-11-29 19:55:18,554 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 314 transitions. Word has length 139 [2020-11-29 19:55:18,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:18,554 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 314 transitions. [2020-11-29 19:55:18,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 19:55:18,555 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 314 transitions. [2020-11-29 19:55:18,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:18,556 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:18,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:18,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 19:55:18,557 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:18,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:18,558 INFO L82 PathProgramCache]: Analyzing trace with hash 855576420, now seen corresponding path program 1 times [2020-11-29 19:55:18,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:18,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088556216] [2020-11-29 19:55:18,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:18,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:18,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088556216] [2020-11-29 19:55:18,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:18,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-29 19:55:18,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734099768] [2020-11-29 19:55:18,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 19:55:18,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:18,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 19:55:18,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-11-29 19:55:18,742 INFO L87 Difference]: Start difference. First operand 255 states and 314 transitions. Second operand 13 states. [2020-11-29 19:55:19,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:19,990 INFO L93 Difference]: Finished difference Result 370 states and 429 transitions. [2020-11-29 19:55:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 19:55:19,991 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 139 [2020-11-29 19:55:19,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:19,993 INFO L225 Difference]: With dead ends: 370 [2020-11-29 19:55:19,993 INFO L226 Difference]: Without dead ends: 253 [2020-11-29 19:55:19,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-11-29 19:55:19,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-11-29 19:55:20,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2020-11-29 19:55:20,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-11-29 19:55:20,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 311 transitions. [2020-11-29 19:55:20,002 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 311 transitions. Word has length 139 [2020-11-29 19:55:20,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:20,002 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 311 transitions. [2020-11-29 19:55:20,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 19:55:20,002 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 311 transitions. [2020-11-29 19:55:20,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:20,004 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:20,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:20,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 19:55:20,005 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:20,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:20,005 INFO L82 PathProgramCache]: Analyzing trace with hash 381296695, now seen corresponding path program 1 times [2020-11-29 19:55:20,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:20,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897633896] [2020-11-29 19:55:20,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:20,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:20,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897633896] [2020-11-29 19:55:20,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:20,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-11-29 19:55:20,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268711532] [2020-11-29 19:55:20,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-29 19:55:20,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:20,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-29 19:55:20,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-11-29 19:55:20,279 INFO L87 Difference]: Start difference. First operand 253 states and 311 transitions. Second operand 15 states. [2020-11-29 19:55:21,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:21,837 INFO L93 Difference]: Finished difference Result 364 states and 422 transitions. [2020-11-29 19:55:21,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 19:55:21,837 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 139 [2020-11-29 19:55:21,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:21,839 INFO L225 Difference]: With dead ends: 364 [2020-11-29 19:55:21,839 INFO L226 Difference]: Without dead ends: 249 [2020-11-29 19:55:21,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-11-29 19:55:21,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-11-29 19:55:21,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2020-11-29 19:55:21,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-11-29 19:55:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 305 transitions. [2020-11-29 19:55:21,848 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 305 transitions. Word has length 139 [2020-11-29 19:55:21,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:21,849 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 305 transitions. [2020-11-29 19:55:21,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-29 19:55:21,849 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 305 transitions. [2020-11-29 19:55:21,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:21,850 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:21,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:21,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 19:55:21,851 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:21,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:21,851 INFO L82 PathProgramCache]: Analyzing trace with hash 996750784, now seen corresponding path program 1 times [2020-11-29 19:55:21,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:21,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640310656] [2020-11-29 19:55:21,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:22,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640310656] [2020-11-29 19:55:22,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:22,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-11-29 19:55:22,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273519406] [2020-11-29 19:55:22,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 19:55:22,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:22,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 19:55:22,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-11-29 19:55:22,073 INFO L87 Difference]: Start difference. First operand 249 states and 305 transitions. Second operand 16 states. [2020-11-29 19:55:23,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:23,238 INFO L93 Difference]: Finished difference Result 358 states and 414 transitions. [2020-11-29 19:55:23,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 19:55:23,239 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 139 [2020-11-29 19:55:23,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:23,241 INFO L225 Difference]: With dead ends: 358 [2020-11-29 19:55:23,241 INFO L226 Difference]: Without dead ends: 247 [2020-11-29 19:55:23,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-11-29 19:55:23,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-11-29 19:55:23,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2020-11-29 19:55:23,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-11-29 19:55:23,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 302 transitions. [2020-11-29 19:55:23,250 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 302 transitions. Word has length 139 [2020-11-29 19:55:23,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:23,250 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 302 transitions. [2020-11-29 19:55:23,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-29 19:55:23,250 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 302 transitions. [2020-11-29 19:55:23,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:23,252 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:23,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:23,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 19:55:23,252 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:23,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:23,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1528260391, now seen corresponding path program 1 times [2020-11-29 19:55:23,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:23,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708539559] [2020-11-29 19:55:23,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:23,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:23,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708539559] [2020-11-29 19:55:23,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:23,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-11-29 19:55:23,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628930618] [2020-11-29 19:55:23,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-29 19:55:23,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:23,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-29 19:55:23,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-11-29 19:55:23,521 INFO L87 Difference]: Start difference. First operand 247 states and 302 transitions. Second operand 19 states. [2020-11-29 19:55:24,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:24,834 INFO L93 Difference]: Finished difference Result 350 states and 405 transitions. [2020-11-29 19:55:24,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 19:55:24,838 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 139 [2020-11-29 19:55:24,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:24,840 INFO L225 Difference]: With dead ends: 350 [2020-11-29 19:55:24,840 INFO L226 Difference]: Without dead ends: 241 [2020-11-29 19:55:24,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-11-29 19:55:24,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-11-29 19:55:24,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2020-11-29 19:55:24,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-11-29 19:55:24,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 293 transitions. [2020-11-29 19:55:24,852 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 293 transitions. Word has length 139 [2020-11-29 19:55:24,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:24,852 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 293 transitions. [2020-11-29 19:55:24,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-29 19:55:24,853 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 293 transitions. [2020-11-29 19:55:24,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:24,854 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:24,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:24,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 19:55:24,855 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:24,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:24,855 INFO L82 PathProgramCache]: Analyzing trace with hash -129036874, now seen corresponding path program 1 times [2020-11-29 19:55:24,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:24,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077460786] [2020-11-29 19:55:24,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:25,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:25,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077460786] [2020-11-29 19:55:25,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:25,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-11-29 19:55:25,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200888503] [2020-11-29 19:55:25,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-29 19:55:25,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:25,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-29 19:55:25,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-11-29 19:55:25,213 INFO L87 Difference]: Start difference. First operand 241 states and 293 transitions. Second operand 20 states. [2020-11-29 19:55:26,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:26,491 INFO L93 Difference]: Finished difference Result 342 states and 394 transitions. [2020-11-29 19:55:26,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-29 19:55:26,492 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 139 [2020-11-29 19:55:26,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:26,493 INFO L225 Difference]: With dead ends: 342 [2020-11-29 19:55:26,493 INFO L226 Difference]: Without dead ends: 239 [2020-11-29 19:55:26,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-11-29 19:55:26,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-11-29 19:55:26,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2020-11-29 19:55:26,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-11-29 19:55:26,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 290 transitions. [2020-11-29 19:55:26,501 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 290 transitions. Word has length 139 [2020-11-29 19:55:26,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:26,502 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 290 transitions. [2020-11-29 19:55:26,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-29 19:55:26,502 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 290 transitions. [2020-11-29 19:55:26,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:26,504 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:26,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:26,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 19:55:26,505 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:26,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:26,505 INFO L82 PathProgramCache]: Analyzing trace with hash -491742161, now seen corresponding path program 1 times [2020-11-29 19:55:26,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:26,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499262186] [2020-11-29 19:55:26,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:26,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499262186] [2020-11-29 19:55:26,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:26,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-11-29 19:55:26,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842697662] [2020-11-29 19:55:26,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-29 19:55:26,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:26,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-29 19:55:26,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-11-29 19:55:26,856 INFO L87 Difference]: Start difference. First operand 239 states and 290 transitions. Second operand 22 states. [2020-11-29 19:55:27,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:27,342 INFO L93 Difference]: Finished difference Result 336 states and 387 transitions. [2020-11-29 19:55:27,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-29 19:55:27,343 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 139 [2020-11-29 19:55:27,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:27,344 INFO L225 Difference]: With dead ends: 336 [2020-11-29 19:55:27,344 INFO L226 Difference]: Without dead ends: 235 [2020-11-29 19:55:27,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-11-29 19:55:27,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-11-29 19:55:27,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2020-11-29 19:55:27,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-11-29 19:55:27,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 284 transitions. [2020-11-29 19:55:27,353 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 284 transitions. Word has length 139 [2020-11-29 19:55:27,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:27,353 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 284 transitions. [2020-11-29 19:55:27,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-29 19:55:27,353 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 284 transitions. [2020-11-29 19:55:27,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:27,355 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:27,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:27,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 19:55:27,355 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:27,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:27,356 INFO L82 PathProgramCache]: Analyzing trace with hash -826407172, now seen corresponding path program 1 times [2020-11-29 19:55:27,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:27,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333720633] [2020-11-29 19:55:27,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:27,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333720633] [2020-11-29 19:55:27,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:27,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-11-29 19:55:27,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982713717] [2020-11-29 19:55:27,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-29 19:55:27,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:27,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-29 19:55:27,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-11-29 19:55:27,725 INFO L87 Difference]: Start difference. First operand 235 states and 284 transitions. Second operand 24 states. [2020-11-29 19:55:28,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:28,740 INFO L93 Difference]: Finished difference Result 328 states and 377 transitions. [2020-11-29 19:55:28,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-29 19:55:28,740 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 139 [2020-11-29 19:55:28,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:28,742 INFO L225 Difference]: With dead ends: 328 [2020-11-29 19:55:28,742 INFO L226 Difference]: Without dead ends: 231 [2020-11-29 19:55:28,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-11-29 19:55:28,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-11-29 19:55:28,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2020-11-29 19:55:28,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-11-29 19:55:28,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 278 transitions. [2020-11-29 19:55:28,750 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 278 transitions. Word has length 139 [2020-11-29 19:55:28,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:28,751 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 278 transitions. [2020-11-29 19:55:28,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-29 19:55:28,751 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 278 transitions. [2020-11-29 19:55:28,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:28,753 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:28,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:28,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 19:55:28,753 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:28,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:28,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1698480530, now seen corresponding path program 1 times [2020-11-29 19:55:28,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:28,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251721363] [2020-11-29 19:55:28,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:29,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:29,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251721363] [2020-11-29 19:55:29,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:29,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2020-11-29 19:55:29,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890299018] [2020-11-29 19:55:29,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-29 19:55:29,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:29,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-29 19:55:29,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-11-29 19:55:29,227 INFO L87 Difference]: Start difference. First operand 231 states and 278 transitions. Second operand 28 states. [2020-11-29 19:55:29,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:29,875 INFO L93 Difference]: Finished difference Result 316 states and 363 transitions. [2020-11-29 19:55:29,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-29 19:55:29,876 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 139 [2020-11-29 19:55:29,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:29,877 INFO L225 Difference]: With dead ends: 316 [2020-11-29 19:55:29,877 INFO L226 Difference]: Without dead ends: 223 [2020-11-29 19:55:29,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-11-29 19:55:29,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-11-29 19:55:29,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2020-11-29 19:55:29,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-11-29 19:55:29,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 266 transitions. [2020-11-29 19:55:29,887 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 266 transitions. Word has length 139 [2020-11-29 19:55:29,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:29,887 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 266 transitions. [2020-11-29 19:55:29,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-29 19:55:29,888 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 266 transitions. [2020-11-29 19:55:29,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:29,889 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:29,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:29,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 19:55:29,890 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:29,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:29,891 INFO L82 PathProgramCache]: Analyzing trace with hash 2024236844, now seen corresponding path program 1 times [2020-11-29 19:55:29,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:29,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667394030] [2020-11-29 19:55:29,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:30,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667394030] [2020-11-29 19:55:30,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:30,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2020-11-29 19:55:30,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685978698] [2020-11-29 19:55:30,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-29 19:55:30,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:30,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-29 19:55:30,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-11-29 19:55:30,382 INFO L87 Difference]: Start difference. First operand 223 states and 266 transitions. Second operand 29 states. [2020-11-29 19:55:31,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:31,039 INFO L93 Difference]: Finished difference Result 306 states and 349 transitions. [2020-11-29 19:55:31,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-29 19:55:31,040 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 139 [2020-11-29 19:55:31,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:31,041 INFO L225 Difference]: With dead ends: 306 [2020-11-29 19:55:31,041 INFO L226 Difference]: Without dead ends: 221 [2020-11-29 19:55:31,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-11-29 19:55:31,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-11-29 19:55:31,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2020-11-29 19:55:31,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-11-29 19:55:31,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 263 transitions. [2020-11-29 19:55:31,050 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 263 transitions. Word has length 139 [2020-11-29 19:55:31,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:31,050 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 263 transitions. [2020-11-29 19:55:31,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-11-29 19:55:31,050 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 263 transitions. [2020-11-29 19:55:31,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:31,051 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:31,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:31,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 19:55:31,052 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:31,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:31,053 INFO L82 PathProgramCache]: Analyzing trace with hash -796108129, now seen corresponding path program 1 times [2020-11-29 19:55:31,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:31,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127597753] [2020-11-29 19:55:31,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:31,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:31,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127597753] [2020-11-29 19:55:31,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:31,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2020-11-29 19:55:31,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711286217] [2020-11-29 19:55:31,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-29 19:55:31,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:31,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-29 19:55:31,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-11-29 19:55:31,676 INFO L87 Difference]: Start difference. First operand 221 states and 263 transitions. Second operand 31 states. [2020-11-29 19:55:33,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:33,580 INFO L93 Difference]: Finished difference Result 300 states and 342 transitions. [2020-11-29 19:55:33,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-29 19:55:33,581 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 139 [2020-11-29 19:55:33,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:33,582 INFO L225 Difference]: With dead ends: 300 [2020-11-29 19:55:33,583 INFO L226 Difference]: Without dead ends: 217 [2020-11-29 19:55:33,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-11-29 19:55:33,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-29 19:55:33,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-11-29 19:55:33,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-11-29 19:55:33,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 257 transitions. [2020-11-29 19:55:33,590 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 257 transitions. Word has length 139 [2020-11-29 19:55:33,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:33,590 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 257 transitions. [2020-11-29 19:55:33,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-11-29 19:55:33,590 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 257 transitions. [2020-11-29 19:55:33,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:33,592 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:33,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:33,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 19:55:33,592 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:33,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:33,593 INFO L82 PathProgramCache]: Analyzing trace with hash 2017582456, now seen corresponding path program 1 times [2020-11-29 19:55:33,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:33,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535093744] [2020-11-29 19:55:33,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:34,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535093744] [2020-11-29 19:55:34,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:34,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2020-11-29 19:55:34,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64779461] [2020-11-29 19:55:34,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-29 19:55:34,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:34,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-29 19:55:34,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-11-29 19:55:34,309 INFO L87 Difference]: Start difference. First operand 217 states and 257 transitions. Second operand 32 states. [2020-11-29 19:55:35,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:35,416 INFO L93 Difference]: Finished difference Result 294 states and 334 transitions. [2020-11-29 19:55:35,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-29 19:55:35,416 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 139 [2020-11-29 19:55:35,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:35,417 INFO L225 Difference]: With dead ends: 294 [2020-11-29 19:55:35,417 INFO L226 Difference]: Without dead ends: 215 [2020-11-29 19:55:35,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-11-29 19:55:35,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-11-29 19:55:35,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2020-11-29 19:55:35,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-11-29 19:55:35,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 254 transitions. [2020-11-29 19:55:35,426 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 254 transitions. Word has length 139 [2020-11-29 19:55:35,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:35,426 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 254 transitions. [2020-11-29 19:55:35,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-11-29 19:55:35,427 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 254 transitions. [2020-11-29 19:55:35,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:35,428 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:35,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:35,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 19:55:35,428 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:35,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:35,429 INFO L82 PathProgramCache]: Analyzing trace with hash 672036993, now seen corresponding path program 1 times [2020-11-29 19:55:35,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:35,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845698583] [2020-11-29 19:55:35,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:36,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:36,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845698583] [2020-11-29 19:55:36,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:36,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2020-11-29 19:55:36,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47662874] [2020-11-29 19:55:36,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-29 19:55:36,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:36,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-29 19:55:36,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-11-29 19:55:36,231 INFO L87 Difference]: Start difference. First operand 215 states and 254 transitions. Second operand 35 states. [2020-11-29 19:55:38,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:38,409 INFO L93 Difference]: Finished difference Result 286 states and 325 transitions. [2020-11-29 19:55:38,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-29 19:55:38,409 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 139 [2020-11-29 19:55:38,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:38,411 INFO L225 Difference]: With dead ends: 286 [2020-11-29 19:55:38,411 INFO L226 Difference]: Without dead ends: 209 [2020-11-29 19:55:38,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-11-29 19:55:38,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-11-29 19:55:38,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-11-29 19:55:38,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-11-29 19:55:38,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 245 transitions. [2020-11-29 19:55:38,419 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 245 transitions. Word has length 139 [2020-11-29 19:55:38,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:38,419 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 245 transitions. [2020-11-29 19:55:38,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-11-29 19:55:38,419 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 245 transitions. [2020-11-29 19:55:38,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:38,420 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:38,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:38,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-29 19:55:38,420 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:38,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:38,421 INFO L82 PathProgramCache]: Analyzing trace with hash 439614126, now seen corresponding path program 1 times [2020-11-29 19:55:38,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:38,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490759993] [2020-11-29 19:55:38,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:39,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:39,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490759993] [2020-11-29 19:55:39,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:39,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2020-11-29 19:55:39,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103503778] [2020-11-29 19:55:39,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-29 19:55:39,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:39,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-29 19:55:39,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-11-29 19:55:39,148 INFO L87 Difference]: Start difference. First operand 209 states and 245 transitions. Second operand 36 states. [2020-11-29 19:55:41,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:41,169 INFO L93 Difference]: Finished difference Result 278 states and 314 transitions. [2020-11-29 19:55:41,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-29 19:55:41,170 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 139 [2020-11-29 19:55:41,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:41,171 INFO L225 Difference]: With dead ends: 278 [2020-11-29 19:55:41,171 INFO L226 Difference]: Without dead ends: 207 [2020-11-29 19:55:41,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-11-29 19:55:41,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-11-29 19:55:41,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2020-11-29 19:55:41,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-11-29 19:55:41,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 242 transitions. [2020-11-29 19:55:41,179 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 242 transitions. Word has length 139 [2020-11-29 19:55:41,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:41,179 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 242 transitions. [2020-11-29 19:55:41,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-11-29 19:55:41,179 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 242 transitions. [2020-11-29 19:55:41,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:41,180 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:41,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:41,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-29 19:55:41,181 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:41,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:41,181 INFO L82 PathProgramCache]: Analyzing trace with hash 851811271, now seen corresponding path program 1 times [2020-11-29 19:55:41,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:41,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579471862] [2020-11-29 19:55:41,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:42,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:42,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579471862] [2020-11-29 19:55:42,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:42,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2020-11-29 19:55:42,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475657410] [2020-11-29 19:55:42,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-11-29 19:55:42,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:42,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-11-29 19:55:42,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-11-29 19:55:42,142 INFO L87 Difference]: Start difference. First operand 207 states and 242 transitions. Second operand 38 states. [2020-11-29 19:55:43,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:43,798 INFO L93 Difference]: Finished difference Result 272 states and 307 transitions. [2020-11-29 19:55:43,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-29 19:55:43,798 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 139 [2020-11-29 19:55:43,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:43,800 INFO L225 Difference]: With dead ends: 272 [2020-11-29 19:55:43,800 INFO L226 Difference]: Without dead ends: 203 [2020-11-29 19:55:43,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-11-29 19:55:43,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-11-29 19:55:43,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-11-29 19:55:43,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-11-29 19:55:43,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 236 transitions. [2020-11-29 19:55:43,807 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 236 transitions. Word has length 139 [2020-11-29 19:55:43,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:43,808 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 236 transitions. [2020-11-29 19:55:43,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-11-29 19:55:43,808 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 236 transitions. [2020-11-29 19:55:43,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:43,809 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:43,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:43,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-29 19:55:43,810 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:43,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:43,811 INFO L82 PathProgramCache]: Analyzing trace with hash -211175116, now seen corresponding path program 1 times [2020-11-29 19:55:43,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:43,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137250605] [2020-11-29 19:55:43,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:44,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:44,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137250605] [2020-11-29 19:55:44,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:44,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2020-11-29 19:55:44,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487332637] [2020-11-29 19:55:44,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-11-29 19:55:44,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:44,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-11-29 19:55:44,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-11-29 19:55:44,920 INFO L87 Difference]: Start difference. First operand 203 states and 236 transitions. Second operand 40 states. [2020-11-29 19:55:45,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:45,794 INFO L93 Difference]: Finished difference Result 264 states and 297 transitions. [2020-11-29 19:55:45,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-29 19:55:45,795 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 139 [2020-11-29 19:55:45,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:45,796 INFO L225 Difference]: With dead ends: 264 [2020-11-29 19:55:45,796 INFO L226 Difference]: Without dead ends: 199 [2020-11-29 19:55:45,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-11-29 19:55:45,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-11-29 19:55:45,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2020-11-29 19:55:45,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-11-29 19:55:45,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 230 transitions. [2020-11-29 19:55:45,803 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 230 transitions. Word has length 139 [2020-11-29 19:55:45,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:45,803 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 230 transitions. [2020-11-29 19:55:45,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-11-29 19:55:45,803 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 230 transitions. [2020-11-29 19:55:45,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:45,804 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:45,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:45,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-29 19:55:45,805 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:45,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:45,806 INFO L82 PathProgramCache]: Analyzing trace with hash -2111194870, now seen corresponding path program 1 times [2020-11-29 19:55:45,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:45,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588640005] [2020-11-29 19:55:45,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:46,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:46,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588640005] [2020-11-29 19:55:46,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:46,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2020-11-29 19:55:46,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172195755] [2020-11-29 19:55:46,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-11-29 19:55:46,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:46,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-11-29 19:55:46,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-11-29 19:55:46,793 INFO L87 Difference]: Start difference. First operand 199 states and 230 transitions. Second operand 44 states. [2020-11-29 19:55:48,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:48,307 INFO L93 Difference]: Finished difference Result 252 states and 283 transitions. [2020-11-29 19:55:48,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-29 19:55:48,309 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 139 [2020-11-29 19:55:48,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:48,310 INFO L225 Difference]: With dead ends: 252 [2020-11-29 19:55:48,310 INFO L226 Difference]: Without dead ends: 191 [2020-11-29 19:55:48,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-11-29 19:55:48,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-29 19:55:48,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2020-11-29 19:55:48,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-11-29 19:55:48,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 218 transitions. [2020-11-29 19:55:48,318 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 218 transitions. Word has length 139 [2020-11-29 19:55:48,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:48,318 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 218 transitions. [2020-11-29 19:55:48,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-11-29 19:55:48,318 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 218 transitions. [2020-11-29 19:55:48,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:48,319 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:48,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:48,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-29 19:55:48,320 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:48,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:48,321 INFO L82 PathProgramCache]: Analyzing trace with hash 505959412, now seen corresponding path program 1 times [2020-11-29 19:55:48,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:48,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816561058] [2020-11-29 19:55:48,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:49,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:49,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816561058] [2020-11-29 19:55:49,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:49,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2020-11-29 19:55:49,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285157875] [2020-11-29 19:55:49,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-11-29 19:55:49,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:49,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-11-29 19:55:49,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-11-29 19:55:49,466 INFO L87 Difference]: Start difference. First operand 191 states and 218 transitions. Second operand 45 states. [2020-11-29 19:55:50,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:50,800 INFO L93 Difference]: Finished difference Result 242 states and 269 transitions. [2020-11-29 19:55:50,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-29 19:55:50,800 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 139 [2020-11-29 19:55:50,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:50,801 INFO L225 Difference]: With dead ends: 242 [2020-11-29 19:55:50,801 INFO L226 Difference]: Without dead ends: 189 [2020-11-29 19:55:50,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-11-29 19:55:50,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-11-29 19:55:50,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2020-11-29 19:55:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-11-29 19:55:50,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 215 transitions. [2020-11-29 19:55:50,807 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 215 transitions. Word has length 139 [2020-11-29 19:55:50,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:50,808 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 215 transitions. [2020-11-29 19:55:50,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-11-29 19:55:50,808 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 215 transitions. [2020-11-29 19:55:50,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:50,809 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:50,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:50,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-29 19:55:50,810 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:50,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:50,810 INFO L82 PathProgramCache]: Analyzing trace with hash 762063367, now seen corresponding path program 1 times [2020-11-29 19:55:50,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:50,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237179324] [2020-11-29 19:55:50,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:52,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:52,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237179324] [2020-11-29 19:55:52,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:52,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2020-11-29 19:55:52,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492486622] [2020-11-29 19:55:52,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-11-29 19:55:52,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:52,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-11-29 19:55:52,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-11-29 19:55:52,080 INFO L87 Difference]: Start difference. First operand 189 states and 215 transitions. Second operand 47 states. [2020-11-29 19:55:53,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:53,114 INFO L93 Difference]: Finished difference Result 236 states and 262 transitions. [2020-11-29 19:55:53,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-29 19:55:53,116 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 139 [2020-11-29 19:55:53,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:53,117 INFO L225 Difference]: With dead ends: 236 [2020-11-29 19:55:53,117 INFO L226 Difference]: Without dead ends: 185 [2020-11-29 19:55:53,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-11-29 19:55:53,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-29 19:55:53,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2020-11-29 19:55:53,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-11-29 19:55:53,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 209 transitions. [2020-11-29 19:55:53,124 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 209 transitions. Word has length 139 [2020-11-29 19:55:53,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:53,125 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 209 transitions. [2020-11-29 19:55:53,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-11-29 19:55:53,125 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 209 transitions. [2020-11-29 19:55:53,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:53,126 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:53,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:53,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-29 19:55:53,127 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:53,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:53,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1521130032, now seen corresponding path program 1 times [2020-11-29 19:55:53,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:53,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97517622] [2020-11-29 19:55:53,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:54,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:54,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97517622] [2020-11-29 19:55:54,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:54,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2020-11-29 19:55:54,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775854391] [2020-11-29 19:55:54,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-11-29 19:55:54,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:54,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-11-29 19:55:54,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-11-29 19:55:54,278 INFO L87 Difference]: Start difference. First operand 185 states and 209 transitions. Second operand 48 states. [2020-11-29 19:55:56,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:56,108 INFO L93 Difference]: Finished difference Result 230 states and 254 transitions. [2020-11-29 19:55:56,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-29 19:55:56,109 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 139 [2020-11-29 19:55:56,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:56,110 INFO L225 Difference]: With dead ends: 230 [2020-11-29 19:55:56,110 INFO L226 Difference]: Without dead ends: 183 [2020-11-29 19:55:56,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-11-29 19:55:56,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-11-29 19:55:56,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2020-11-29 19:55:56,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-11-29 19:55:56,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 206 transitions. [2020-11-29 19:55:56,116 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 206 transitions. Word has length 139 [2020-11-29 19:55:56,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:56,117 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 206 transitions. [2020-11-29 19:55:56,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-11-29 19:55:56,117 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 206 transitions. [2020-11-29 19:55:56,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:56,118 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:56,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:56,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-29 19:55:56,119 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:56,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:56,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1679037143, now seen corresponding path program 1 times [2020-11-29 19:55:56,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:56,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999797820] [2020-11-29 19:55:56,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:57,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999797820] [2020-11-29 19:55:57,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:55:57,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2020-11-29 19:55:57,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418274766] [2020-11-29 19:55:57,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-11-29 19:55:57,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:55:57,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-11-29 19:55:57,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-11-29 19:55:57,366 INFO L87 Difference]: Start difference. First operand 183 states and 206 transitions. Second operand 51 states. [2020-11-29 19:55:59,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:55:59,689 INFO L93 Difference]: Finished difference Result 222 states and 245 transitions. [2020-11-29 19:55:59,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-11-29 19:55:59,689 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 139 [2020-11-29 19:55:59,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:55:59,690 INFO L225 Difference]: With dead ends: 222 [2020-11-29 19:55:59,691 INFO L226 Difference]: Without dead ends: 177 [2020-11-29 19:55:59,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-11-29 19:55:59,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-11-29 19:55:59,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2020-11-29 19:55:59,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-11-29 19:55:59,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 197 transitions. [2020-11-29 19:55:59,697 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 197 transitions. Word has length 139 [2020-11-29 19:55:59,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:55:59,698 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 197 transitions. [2020-11-29 19:55:59,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-11-29 19:55:59,698 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 197 transitions. [2020-11-29 19:55:59,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:55:59,699 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:55:59,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:55:59,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-29 19:55:59,699 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:55:59,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:55:59,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1729297574, now seen corresponding path program 1 times [2020-11-29 19:55:59,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:55:59,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138141605] [2020-11-29 19:55:59,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:55:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:01,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:01,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138141605] [2020-11-29 19:56:01,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:56:01,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2020-11-29 19:56:01,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142858885] [2020-11-29 19:56:01,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-11-29 19:56:01,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:01,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-11-29 19:56:01,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-11-29 19:56:01,064 INFO L87 Difference]: Start difference. First operand 177 states and 197 transitions. Second operand 52 states. [2020-11-29 19:56:03,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:03,298 INFO L93 Difference]: Finished difference Result 214 states and 234 transitions. [2020-11-29 19:56:03,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-29 19:56:03,299 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 139 [2020-11-29 19:56:03,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:03,300 INFO L225 Difference]: With dead ends: 214 [2020-11-29 19:56:03,300 INFO L226 Difference]: Without dead ends: 175 [2020-11-29 19:56:03,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-11-29 19:56:03,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-29 19:56:03,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2020-11-29 19:56:03,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-11-29 19:56:03,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 194 transitions. [2020-11-29 19:56:03,305 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 194 transitions. Word has length 139 [2020-11-29 19:56:03,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:03,306 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 194 transitions. [2020-11-29 19:56:03,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-11-29 19:56:03,306 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 194 transitions. [2020-11-29 19:56:03,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:56:03,307 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:03,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:56:03,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-11-29 19:56:03,308 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:03,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:03,308 INFO L82 PathProgramCache]: Analyzing trace with hash 875147359, now seen corresponding path program 1 times [2020-11-29 19:56:03,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:03,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732469497] [2020-11-29 19:56:03,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:04,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:04,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732469497] [2020-11-29 19:56:04,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:56:04,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2020-11-29 19:56:04,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467096079] [2020-11-29 19:56:04,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-11-29 19:56:04,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:04,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-11-29 19:56:04,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-11-29 19:56:04,797 INFO L87 Difference]: Start difference. First operand 175 states and 194 transitions. Second operand 53 states. [2020-11-29 19:56:05,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:05,928 INFO L93 Difference]: Finished difference Result 210 states and 229 transitions. [2020-11-29 19:56:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-11-29 19:56:05,929 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 139 [2020-11-29 19:56:05,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:05,929 INFO L225 Difference]: With dead ends: 210 [2020-11-29 19:56:05,929 INFO L226 Difference]: Without dead ends: 141 [2020-11-29 19:56:05,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-11-29 19:56:05,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-11-29 19:56:05,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-11-29 19:56:05,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 19:56:05,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2020-11-29 19:56:05,935 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 139 [2020-11-29 19:56:05,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:05,935 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2020-11-29 19:56:05,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-11-29 19:56:05,935 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2020-11-29 19:56:05,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-29 19:56:05,936 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:05,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:56:05,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-11-29 19:56:05,936 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:05,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:05,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1857125832, now seen corresponding path program 1 times [2020-11-29 19:56:05,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:05,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80587480] [2020-11-29 19:56:05,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:08,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80587480] [2020-11-29 19:56:08,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:56:08,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2020-11-29 19:56:08,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607258895] [2020-11-29 19:56:08,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-11-29 19:56:08,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:08,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-11-29 19:56:08,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2020-11-29 19:56:08,277 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 70 states. [2020-11-29 19:56:10,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:10,180 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2020-11-29 19:56:10,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-11-29 19:56:10,181 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 139 [2020-11-29 19:56:10,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:10,182 INFO L225 Difference]: With dead ends: 146 [2020-11-29 19:56:10,182 INFO L226 Difference]: Without dead ends: 143 [2020-11-29 19:56:10,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2020-11-29 19:56:10,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-11-29 19:56:10,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2020-11-29 19:56:10,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-29 19:56:10,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2020-11-29 19:56:10,188 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 139 [2020-11-29 19:56:10,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:10,189 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2020-11-29 19:56:10,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-11-29 19:56:10,189 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2020-11-29 19:56:10,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-29 19:56:10,190 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:10,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:56:10,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-11-29 19:56:10,190 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:10,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:10,190 INFO L82 PathProgramCache]: Analyzing trace with hash 2000945138, now seen corresponding path program 1 times [2020-11-29 19:56:10,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:10,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433722031] [2020-11-29 19:56:10,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:12,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433722031] [2020-11-29 19:56:12,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675280258] [2020-11-29 19:56:12,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:56:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:12,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 70 conjunts are in the unsatisfiable core [2020-11-29 19:56:12,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:56:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:13,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:56:13,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 72 [2020-11-29 19:56:13,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163919687] [2020-11-29 19:56:13,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-11-29 19:56:13,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:13,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-11-29 19:56:13,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2020-11-29 19:56:13,280 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 72 states. [2020-11-29 19:56:14,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:14,953 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2020-11-29 19:56:14,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-11-29 19:56:14,953 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 141 [2020-11-29 19:56:14,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:14,955 INFO L225 Difference]: With dead ends: 148 [2020-11-29 19:56:14,955 INFO L226 Difference]: Without dead ends: 145 [2020-11-29 19:56:14,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2020-11-29 19:56:14,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-29 19:56:14,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2020-11-29 19:56:14,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-29 19:56:14,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2020-11-29 19:56:14,962 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 141 [2020-11-29 19:56:14,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:14,962 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2020-11-29 19:56:14,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-11-29 19:56:14,962 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2020-11-29 19:56:14,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-11-29 19:56:14,963 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:14,969 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:56:15,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:56:15,196 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:15,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:15,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1244596436, now seen corresponding path program 2 times [2020-11-29 19:56:15,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:15,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137898434] [2020-11-29 19:56:15,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:17,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:17,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137898434] [2020-11-29 19:56:17,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985679841] [2020-11-29 19:56:17,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:56:18,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:56:18,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:56:18,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 71 conjunts are in the unsatisfiable core [2020-11-29 19:56:18,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:56:18,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:18,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:56:18,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 73 [2020-11-29 19:56:18,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306684569] [2020-11-29 19:56:18,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-11-29 19:56:18,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:18,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-11-29 19:56:18,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2020-11-29 19:56:18,220 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 73 states. [2020-11-29 19:56:20,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:20,363 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2020-11-29 19:56:20,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-11-29 19:56:20,364 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 143 [2020-11-29 19:56:20,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:20,364 INFO L225 Difference]: With dead ends: 150 [2020-11-29 19:56:20,365 INFO L226 Difference]: Without dead ends: 147 [2020-11-29 19:56:20,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2020-11-29 19:56:20,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-11-29 19:56:20,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2020-11-29 19:56:20,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-29 19:56:20,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2020-11-29 19:56:20,370 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 143 [2020-11-29 19:56:20,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:20,371 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2020-11-29 19:56:20,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-11-29 19:56:20,371 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2020-11-29 19:56:20,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-11-29 19:56:20,372 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:20,372 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:56:20,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:56:20,588 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:20,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:20,588 INFO L82 PathProgramCache]: Analyzing trace with hash -2063792154, now seen corresponding path program 3 times [2020-11-29 19:56:20,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:20,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802478649] [2020-11-29 19:56:20,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:23,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802478649] [2020-11-29 19:56:23,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542878983] [2020-11-29 19:56:23,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:56:23,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-29 19:56:23,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:56:23,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 72 conjunts are in the unsatisfiable core [2020-11-29 19:56:23,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:56:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:23,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:56:23,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 74 [2020-11-29 19:56:23,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400638027] [2020-11-29 19:56:23,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-11-29 19:56:23,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:23,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-11-29 19:56:23,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2020-11-29 19:56:23,468 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 74 states. [2020-11-29 19:56:25,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:25,731 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2020-11-29 19:56:25,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-11-29 19:56:25,731 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 145 [2020-11-29 19:56:25,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:25,732 INFO L225 Difference]: With dead ends: 152 [2020-11-29 19:56:25,732 INFO L226 Difference]: Without dead ends: 149 [2020-11-29 19:56:25,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2020-11-29 19:56:25,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-11-29 19:56:25,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2020-11-29 19:56:25,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-11-29 19:56:25,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2020-11-29 19:56:25,739 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 145 [2020-11-29 19:56:25,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:25,740 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2020-11-29 19:56:25,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-11-29 19:56:25,740 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2020-11-29 19:56:25,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-11-29 19:56:25,741 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:25,741 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:56:25,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:56:25,952 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:25,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:25,952 INFO L82 PathProgramCache]: Analyzing trace with hash 963105312, now seen corresponding path program 4 times [2020-11-29 19:56:25,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:25,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462001104] [2020-11-29 19:56:25,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:28,795 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:28,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462001104] [2020-11-29 19:56:28,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320474297] [2020-11-29 19:56:28,795 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:56:28,869 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:56:28,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:56:28,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 73 conjunts are in the unsatisfiable core [2020-11-29 19:56:28,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:56:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:28,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:56:28,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 75 [2020-11-29 19:56:28,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432847079] [2020-11-29 19:56:28,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-11-29 19:56:28,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:28,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-11-29 19:56:28,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2020-11-29 19:56:28,995 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 75 states. [2020-11-29 19:56:30,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:30,300 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2020-11-29 19:56:30,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-11-29 19:56:30,300 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 147 [2020-11-29 19:56:30,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:30,301 INFO L225 Difference]: With dead ends: 154 [2020-11-29 19:56:30,301 INFO L226 Difference]: Without dead ends: 151 [2020-11-29 19:56:30,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2020-11-29 19:56:30,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-11-29 19:56:30,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2020-11-29 19:56:30,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-11-29 19:56:30,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2020-11-29 19:56:30,308 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 147 [2020-11-29 19:56:30,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:30,309 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2020-11-29 19:56:30,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-11-29 19:56:30,309 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2020-11-29 19:56:30,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-11-29 19:56:30,310 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:30,311 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:56:30,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:56:30,524 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:30,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:30,524 INFO L82 PathProgramCache]: Analyzing trace with hash 2118710746, now seen corresponding path program 5 times [2020-11-29 19:56:30,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:30,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042142055] [2020-11-29 19:56:30,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:33,712 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:33,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042142055] [2020-11-29 19:56:33,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936189832] [2020-11-29 19:56:33,712 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:56:33,787 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-29 19:56:33,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:56:33,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 74 conjunts are in the unsatisfiable core [2020-11-29 19:56:33,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:56:33,906 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:33,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:56:33,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 76 [2020-11-29 19:56:33,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718283146] [2020-11-29 19:56:33,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-11-29 19:56:33,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:33,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-11-29 19:56:33,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2020-11-29 19:56:33,909 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 76 states. [2020-11-29 19:56:36,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:36,492 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2020-11-29 19:56:36,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-11-29 19:56:36,492 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 149 [2020-11-29 19:56:36,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:36,494 INFO L225 Difference]: With dead ends: 156 [2020-11-29 19:56:36,494 INFO L226 Difference]: Without dead ends: 153 [2020-11-29 19:56:36,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2020-11-29 19:56:36,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-11-29 19:56:36,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2020-11-29 19:56:36,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-29 19:56:36,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2020-11-29 19:56:36,503 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 149 [2020-11-29 19:56:36,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:36,503 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2020-11-29 19:56:36,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-11-29 19:56:36,504 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2020-11-29 19:56:36,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-29 19:56:36,505 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:36,505 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:56:36,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-11-29 19:56:36,732 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:36,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:36,732 INFO L82 PathProgramCache]: Analyzing trace with hash 259003156, now seen corresponding path program 6 times [2020-11-29 19:56:36,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:36,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681101638] [2020-11-29 19:56:36,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:40,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681101638] [2020-11-29 19:56:40,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025419876] [2020-11-29 19:56:40,227 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:56:40,301 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-29 19:56:40,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:56:40,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 75 conjunts are in the unsatisfiable core [2020-11-29 19:56:40,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:56:40,397 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:40,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:56:40,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 77 [2020-11-29 19:56:40,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159698041] [2020-11-29 19:56:40,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-11-29 19:56:40,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:40,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-11-29 19:56:40,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2020-11-29 19:56:40,400 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 77 states. [2020-11-29 19:56:41,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:41,782 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2020-11-29 19:56:41,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-11-29 19:56:41,782 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 151 [2020-11-29 19:56:41,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:41,784 INFO L225 Difference]: With dead ends: 158 [2020-11-29 19:56:41,784 INFO L226 Difference]: Without dead ends: 155 [2020-11-29 19:56:41,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2020-11-29 19:56:41,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-11-29 19:56:41,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2020-11-29 19:56:41,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-11-29 19:56:41,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2020-11-29 19:56:41,790 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 151 [2020-11-29 19:56:41,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:41,790 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2020-11-29 19:56:41,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-11-29 19:56:41,790 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2020-11-29 19:56:41,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-11-29 19:56:41,791 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:41,791 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:56:42,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:56:42,008 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:42,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:42,008 INFO L82 PathProgramCache]: Analyzing trace with hash -213595698, now seen corresponding path program 7 times [2020-11-29 19:56:42,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:42,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296602672] [2020-11-29 19:56:42,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:44,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296602672] [2020-11-29 19:56:44,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052614777] [2020-11-29 19:56:44,772 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:56:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:44,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 76 conjunts are in the unsatisfiable core [2020-11-29 19:56:44,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:56:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:44,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:56:44,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 78 [2020-11-29 19:56:44,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236574971] [2020-11-29 19:56:44,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-11-29 19:56:44,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:44,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-11-29 19:56:44,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2020-11-29 19:56:44,929 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 78 states. [2020-11-29 19:56:46,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:46,619 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2020-11-29 19:56:46,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-11-29 19:56:46,620 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 153 [2020-11-29 19:56:46,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:46,620 INFO L225 Difference]: With dead ends: 160 [2020-11-29 19:56:46,620 INFO L226 Difference]: Without dead ends: 157 [2020-11-29 19:56:46,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2020-11-29 19:56:46,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-11-29 19:56:46,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2020-11-29 19:56:46,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-11-29 19:56:46,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2020-11-29 19:56:46,637 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 153 [2020-11-29 19:56:46,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:46,637 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2020-11-29 19:56:46,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-11-29 19:56:46,637 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2020-11-29 19:56:46,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-11-29 19:56:46,638 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:46,638 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:56:46,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-11-29 19:56:46,852 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:46,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:46,852 INFO L82 PathProgramCache]: Analyzing trace with hash 885438984, now seen corresponding path program 8 times [2020-11-29 19:56:46,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:46,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902692970] [2020-11-29 19:56:46,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:49,766 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:49,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902692970] [2020-11-29 19:56:49,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989746705] [2020-11-29 19:56:49,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:56:49,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:56:49,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:56:49,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 77 conjunts are in the unsatisfiable core [2020-11-29 19:56:49,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:56:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:49,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:56:49,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 79 [2020-11-29 19:56:49,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186777299] [2020-11-29 19:56:49,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-11-29 19:56:49,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:49,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-11-29 19:56:49,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2020-11-29 19:56:49,979 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 79 states. [2020-11-29 19:56:52,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:52,194 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2020-11-29 19:56:52,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-11-29 19:56:52,194 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 155 [2020-11-29 19:56:52,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:52,195 INFO L225 Difference]: With dead ends: 162 [2020-11-29 19:56:52,195 INFO L226 Difference]: Without dead ends: 159 [2020-11-29 19:56:52,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2020-11-29 19:56:52,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-29 19:56:52,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2020-11-29 19:56:52,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-11-29 19:56:52,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2020-11-29 19:56:52,201 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 155 [2020-11-29 19:56:52,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:52,201 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2020-11-29 19:56:52,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-11-29 19:56:52,201 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2020-11-29 19:56:52,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-11-29 19:56:52,202 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:52,202 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:56:52,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-11-29 19:56:52,403 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:52,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:52,403 INFO L82 PathProgramCache]: Analyzing trace with hash 495813570, now seen corresponding path program 9 times [2020-11-29 19:56:52,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:52,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828549466] [2020-11-29 19:56:52,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:55,424 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:55,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828549466] [2020-11-29 19:56:55,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284464715] [2020-11-29 19:56:55,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:56:55,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-29 19:56:55,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:56:55,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 78 conjunts are in the unsatisfiable core [2020-11-29 19:56:55,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:56:55,600 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:55,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:56:55,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 80 [2020-11-29 19:56:55,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125764365] [2020-11-29 19:56:55,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-11-29 19:56:55,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:55,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-11-29 19:56:55,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2020-11-29 19:56:55,603 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 80 states. [2020-11-29 19:56:57,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:57,832 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2020-11-29 19:56:57,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-11-29 19:56:57,832 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 157 [2020-11-29 19:56:57,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:57,833 INFO L225 Difference]: With dead ends: 164 [2020-11-29 19:56:57,833 INFO L226 Difference]: Without dead ends: 161 [2020-11-29 19:56:57,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2020-11-29 19:56:57,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-11-29 19:56:57,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2020-11-29 19:56:57,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-11-29 19:56:57,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2020-11-29 19:56:57,840 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 157 [2020-11-29 19:56:57,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:57,840 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2020-11-29 19:56:57,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-11-29 19:56:57,840 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2020-11-29 19:56:57,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-11-29 19:56:57,841 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:57,842 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:56:58,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-11-29 19:56:58,060 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:58,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:58,060 INFO L82 PathProgramCache]: Analyzing trace with hash -272054532, now seen corresponding path program 10 times [2020-11-29 19:56:58,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:58,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375841672] [2020-11-29 19:56:58,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:57:01,292 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:57:01,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375841672] [2020-11-29 19:57:01,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768981452] [2020-11-29 19:57:01,293 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:57:01,379 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:57:01,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:57:01,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 79 conjunts are in the unsatisfiable core [2020-11-29 19:57:01,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:57:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:57:01,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:57:01,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 81 [2020-11-29 19:57:01,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333827223] [2020-11-29 19:57:01,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-11-29 19:57:01,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:57:01,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-11-29 19:57:01,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2020-11-29 19:57:01,486 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 81 states. [2020-11-29 19:57:03,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:57:03,672 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2020-11-29 19:57:03,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-11-29 19:57:03,672 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 159 [2020-11-29 19:57:03,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:57:03,673 INFO L225 Difference]: With dead ends: 166 [2020-11-29 19:57:03,673 INFO L226 Difference]: Without dead ends: 163 [2020-11-29 19:57:03,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2020-11-29 19:57:03,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-29 19:57:03,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2020-11-29 19:57:03,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-11-29 19:57:03,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2020-11-29 19:57:03,678 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 159 [2020-11-29 19:57:03,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:57:03,679 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2020-11-29 19:57:03,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-11-29 19:57:03,679 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2020-11-29 19:57:03,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-11-29 19:57:03,680 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:57:03,680 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:57:03,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-11-29 19:57:03,886 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:57:03,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:57:03,887 INFO L82 PathProgramCache]: Analyzing trace with hash 541074358, now seen corresponding path program 11 times [2020-11-29 19:57:03,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:57:03,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315272717] [2020-11-29 19:57:03,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:57:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:57:07,256 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:57:07,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315272717] [2020-11-29 19:57:07,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742178868] [2020-11-29 19:57:07,257 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:57:07,324 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-29 19:57:07,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:57:07,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 80 conjunts are in the unsatisfiable core [2020-11-29 19:57:07,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:57:07,411 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:57:07,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:57:07,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 82 [2020-11-29 19:57:07,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946349246] [2020-11-29 19:57:07,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-11-29 19:57:07,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:57:07,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-11-29 19:57:07,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2020-11-29 19:57:07,414 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 82 states. [2020-11-29 19:57:09,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:57:09,623 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2020-11-29 19:57:09,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-11-29 19:57:09,624 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 161 [2020-11-29 19:57:09,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:57:09,625 INFO L225 Difference]: With dead ends: 168 [2020-11-29 19:57:09,625 INFO L226 Difference]: Without dead ends: 165 [2020-11-29 19:57:09,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2020-11-29 19:57:09,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-11-29 19:57:09,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2020-11-29 19:57:09,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-11-29 19:57:09,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2020-11-29 19:57:09,632 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 161 [2020-11-29 19:57:09,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:57:09,632 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2020-11-29 19:57:09,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-11-29 19:57:09,632 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2020-11-29 19:57:09,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-11-29 19:57:09,633 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:57:09,634 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:57:09,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-11-29 19:57:09,859 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:57:09,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:57:09,860 INFO L82 PathProgramCache]: Analyzing trace with hash 273889776, now seen corresponding path program 12 times [2020-11-29 19:57:09,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:57:09,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092734275] [2020-11-29 19:57:09,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:57:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:57:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:57:13,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092734275] [2020-11-29 19:57:13,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234235876] [2020-11-29 19:57:13,012 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:57:13,100 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-29 19:57:13,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:57:13,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 81 conjunts are in the unsatisfiable core [2020-11-29 19:57:13,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:57:13,197 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:57:13,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:57:13,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 83 [2020-11-29 19:57:13,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185146419] [2020-11-29 19:57:13,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-11-29 19:57:13,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:57:13,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-11-29 19:57:13,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2020-11-29 19:57:13,201 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 83 states. [2020-11-29 19:57:14,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:57:14,643 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2020-11-29 19:57:14,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-11-29 19:57:14,644 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 163 [2020-11-29 19:57:14,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:57:14,645 INFO L225 Difference]: With dead ends: 170 [2020-11-29 19:57:14,645 INFO L226 Difference]: Without dead ends: 167 [2020-11-29 19:57:14,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2020-11-29 19:57:14,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-11-29 19:57:14,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2020-11-29 19:57:14,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-11-29 19:57:14,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2020-11-29 19:57:14,651 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 163 [2020-11-29 19:57:14,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:57:14,651 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2020-11-29 19:57:14,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-11-29 19:57:14,651 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2020-11-29 19:57:14,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-11-29 19:57:14,652 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:57:14,652 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:57:14,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:57:14,860 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:57:14,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:57:14,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1207544234, now seen corresponding path program 13 times [2020-11-29 19:57:14,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:57:14,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565084947] [2020-11-29 19:57:14,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:57:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:57:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:57:18,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565084947] [2020-11-29 19:57:18,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140668460] [2020-11-29 19:57:18,225 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:57:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:57:18,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 82 conjunts are in the unsatisfiable core [2020-11-29 19:57:18,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:57:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:57:18,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:57:18,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 84 [2020-11-29 19:57:18,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519049059] [2020-11-29 19:57:18,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-11-29 19:57:18,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:57:18,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-11-29 19:57:18,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2020-11-29 19:57:18,385 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 84 states. [2020-11-29 19:57:20,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:57:20,382 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2020-11-29 19:57:20,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-11-29 19:57:20,382 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 165 [2020-11-29 19:57:20,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:57:20,383 INFO L225 Difference]: With dead ends: 172 [2020-11-29 19:57:20,383 INFO L226 Difference]: Without dead ends: 169 [2020-11-29 19:57:20,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2020-11-29 19:57:20,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-11-29 19:57:20,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2020-11-29 19:57:20,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-11-29 19:57:20,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2020-11-29 19:57:20,389 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 165 [2020-11-29 19:57:20,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:57:20,389 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2020-11-29 19:57:20,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-11-29 19:57:20,389 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2020-11-29 19:57:20,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-11-29 19:57:20,390 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:57:20,390 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:57:20,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-11-29 19:57:20,591 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:57:20,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:57:20,591 INFO L82 PathProgramCache]: Analyzing trace with hash 801313508, now seen corresponding path program 14 times [2020-11-29 19:57:20,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:57:20,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041527083] [2020-11-29 19:57:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:57:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:57:23,959 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:57:23,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041527083] [2020-11-29 19:57:23,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953899368] [2020-11-29 19:57:23,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:57:24,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:57:24,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:57:24,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 83 conjunts are in the unsatisfiable core [2020-11-29 19:57:24,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:57:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:57:24,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:57:24,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 85 [2020-11-29 19:57:24,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586081139] [2020-11-29 19:57:24,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-11-29 19:57:24,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:57:24,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-11-29 19:57:24,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2020-11-29 19:57:24,125 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 85 states. [2020-11-29 19:57:26,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:57:26,336 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2020-11-29 19:57:26,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-11-29 19:57:26,337 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 167 [2020-11-29 19:57:26,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:57:26,338 INFO L225 Difference]: With dead ends: 174 [2020-11-29 19:57:26,338 INFO L226 Difference]: Without dead ends: 171 [2020-11-29 19:57:26,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2020-11-29 19:57:26,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-11-29 19:57:26,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2020-11-29 19:57:26,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-11-29 19:57:26,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2020-11-29 19:57:26,342 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 167 [2020-11-29 19:57:26,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:57:26,342 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2020-11-29 19:57:26,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-11-29 19:57:26,342 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2020-11-29 19:57:26,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-11-29 19:57:26,343 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:57:26,343 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:57:26,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:57:26,548 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:57:26,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:57:26,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1255609758, now seen corresponding path program 15 times [2020-11-29 19:57:26,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:57:26,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559555326] [2020-11-29 19:57:26,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:57:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:57:29,904 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:57:29,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559555326] [2020-11-29 19:57:29,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185982144] [2020-11-29 19:57:29,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:57:29,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-11-29 19:57:29,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:57:29,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 84 conjunts are in the unsatisfiable core [2020-11-29 19:57:29,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:57:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:57:30,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:57:30,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 86 [2020-11-29 19:57:30,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903771043] [2020-11-29 19:57:30,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-11-29 19:57:30,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:57:30,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-11-29 19:57:30,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2020-11-29 19:57:30,097 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 86 states. [2020-11-29 19:57:31,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:57:31,722 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2020-11-29 19:57:31,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-11-29 19:57:31,722 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 169 [2020-11-29 19:57:31,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:57:31,723 INFO L225 Difference]: With dead ends: 176 [2020-11-29 19:57:31,723 INFO L226 Difference]: Without dead ends: 173 [2020-11-29 19:57:31,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2020-11-29 19:57:31,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-11-29 19:57:31,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2020-11-29 19:57:31,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-11-29 19:57:31,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2020-11-29 19:57:31,727 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 169 [2020-11-29 19:57:31,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:57:31,727 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2020-11-29 19:57:31,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-11-29 19:57:31,728 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2020-11-29 19:57:31,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-29 19:57:31,728 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:57:31,729 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:57:31,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-11-29 19:57:31,937 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:57:31,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:57:31,937 INFO L82 PathProgramCache]: Analyzing trace with hash -252358184, now seen corresponding path program 16 times [2020-11-29 19:57:31,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:57:31,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24673797] [2020-11-29 19:57:31,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:57:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:57:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:57:35,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24673797] [2020-11-29 19:57:35,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412794647] [2020-11-29 19:57:35,594 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:57:35,663 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:57:35,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:57:35,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 85 conjunts are in the unsatisfiable core [2020-11-29 19:57:35,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:57:35,742 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:57:35,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:57:35,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 87 [2020-11-29 19:57:35,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485041975] [2020-11-29 19:57:35,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-11-29 19:57:35,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:57:35,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-11-29 19:57:35,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2020-11-29 19:57:35,744 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 87 states. [2020-11-29 19:57:37,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:57:37,587 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2020-11-29 19:57:37,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-11-29 19:57:37,587 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 171 [2020-11-29 19:57:37,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:57:37,588 INFO L225 Difference]: With dead ends: 178 [2020-11-29 19:57:37,588 INFO L226 Difference]: Without dead ends: 175 [2020-11-29 19:57:37,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2020-11-29 19:57:37,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-29 19:57:37,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2020-11-29 19:57:37,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-11-29 19:57:37,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2020-11-29 19:57:37,592 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 171 [2020-11-29 19:57:37,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:57:37,593 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2020-11-29 19:57:37,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-11-29 19:57:37,593 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2020-11-29 19:57:37,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-11-29 19:57:37,594 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:57:37,594 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:57:37,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:57:37,816 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:57:37,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:57:37,816 INFO L82 PathProgramCache]: Analyzing trace with hash -2005571694, now seen corresponding path program 17 times [2020-11-29 19:57:37,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:57:37,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500298861] [2020-11-29 19:57:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:57:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:57:41,673 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:57:41,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500298861] [2020-11-29 19:57:41,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777037788] [2020-11-29 19:57:41,674 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:57:41,768 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-11-29 19:57:41,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:57:41,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 86 conjunts are in the unsatisfiable core [2020-11-29 19:57:41,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:57:41,863 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:57:41,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:57:41,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 88 [2020-11-29 19:57:41,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291214393] [2020-11-29 19:57:41,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-11-29 19:57:41,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:57:41,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-11-29 19:57:41,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2020-11-29 19:57:41,865 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 88 states. [2020-11-29 19:57:44,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:57:44,162 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2020-11-29 19:57:44,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-11-29 19:57:44,163 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 173 [2020-11-29 19:57:44,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:57:44,164 INFO L225 Difference]: With dead ends: 180 [2020-11-29 19:57:44,164 INFO L226 Difference]: Without dead ends: 177 [2020-11-29 19:57:44,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2020-11-29 19:57:44,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-11-29 19:57:44,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2020-11-29 19:57:44,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-11-29 19:57:44,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2020-11-29 19:57:44,168 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 173 [2020-11-29 19:57:44,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:57:44,168 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2020-11-29 19:57:44,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-11-29 19:57:44,168 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2020-11-29 19:57:44,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-11-29 19:57:44,169 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:57:44,169 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:57:44,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-11-29 19:57:44,370 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:57:44,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:57:44,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1078392524, now seen corresponding path program 18 times [2020-11-29 19:57:44,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:57:44,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858131236] [2020-11-29 19:57:44,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:57:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:57:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:57:48,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858131236] [2020-11-29 19:57:48,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163618181] [2020-11-29 19:57:48,259 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:57:48,358 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-11-29 19:57:48,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:57:48,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 87 conjunts are in the unsatisfiable core [2020-11-29 19:57:48,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:57:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:57:48,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:57:48,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 89 [2020-11-29 19:57:48,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747880867] [2020-11-29 19:57:48,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-11-29 19:57:48,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:57:48,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-11-29 19:57:48,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2020-11-29 19:57:48,455 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 89 states. [2020-11-29 19:57:50,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:57:50,784 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2020-11-29 19:57:50,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-11-29 19:57:50,784 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 175 [2020-11-29 19:57:50,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:57:50,785 INFO L225 Difference]: With dead ends: 182 [2020-11-29 19:57:50,785 INFO L226 Difference]: Without dead ends: 179 [2020-11-29 19:57:50,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2020-11-29 19:57:50,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-11-29 19:57:50,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178. [2020-11-29 19:57:50,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-11-29 19:57:50,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2020-11-29 19:57:50,790 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 175 [2020-11-29 19:57:50,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:57:50,791 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2020-11-29 19:57:50,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-11-29 19:57:50,791 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2020-11-29 19:57:50,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-11-29 19:57:50,792 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:57:50,792 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:57:51,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-11-29 19:57:51,004 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:57:51,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:57:51,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1240571782, now seen corresponding path program 19 times [2020-11-29 19:57:51,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:57:51,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438477258] [2020-11-29 19:57:51,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:57:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:57:54,998 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:57:54,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438477258] [2020-11-29 19:57:54,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264866070] [2020-11-29 19:57:54,999 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:57:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:57:55,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 88 conjunts are in the unsatisfiable core [2020-11-29 19:57:55,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:57:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:57:55,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:57:55,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 90 [2020-11-29 19:57:55,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319356472] [2020-11-29 19:57:55,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-11-29 19:57:55,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:57:55,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-11-29 19:57:55,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2020-11-29 19:57:55,165 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 90 states. [2020-11-29 19:57:57,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:57:57,599 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2020-11-29 19:57:57,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-11-29 19:57:57,600 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 177 [2020-11-29 19:57:57,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:57:57,601 INFO L225 Difference]: With dead ends: 184 [2020-11-29 19:57:57,601 INFO L226 Difference]: Without dead ends: 181 [2020-11-29 19:57:57,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2020-11-29 19:57:57,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-11-29 19:57:57,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180. [2020-11-29 19:57:57,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-11-29 19:57:57,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2020-11-29 19:57:57,607 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 177 [2020-11-29 19:57:57,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:57:57,607 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2020-11-29 19:57:57,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-11-29 19:57:57,608 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2020-11-29 19:57:57,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-11-29 19:57:57,609 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:57:57,609 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:57:57,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-11-29 19:57:57,832 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:57:57,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:57:57,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1818951232, now seen corresponding path program 20 times [2020-11-29 19:57:57,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:57:57,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218799203] [2020-11-29 19:57:57,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:57:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:02,189 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:02,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218799203] [2020-11-29 19:58:02,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883966777] [2020-11-29 19:58:02,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:58:02,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:58:02,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:58:02,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 89 conjunts are in the unsatisfiable core [2020-11-29 19:58:02,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:58:02,358 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:02,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:58:02,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 91 [2020-11-29 19:58:02,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354832148] [2020-11-29 19:58:02,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-11-29 19:58:02,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:58:02,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-11-29 19:58:02,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2020-11-29 19:58:02,361 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 91 states. [2020-11-29 19:58:04,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:58:04,914 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2020-11-29 19:58:04,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-11-29 19:58:04,915 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 179 [2020-11-29 19:58:04,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:58:04,916 INFO L225 Difference]: With dead ends: 186 [2020-11-29 19:58:04,916 INFO L226 Difference]: Without dead ends: 183 [2020-11-29 19:58:04,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2020-11-29 19:58:04,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-11-29 19:58:04,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2020-11-29 19:58:04,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-11-29 19:58:04,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2020-11-29 19:58:04,921 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 179 [2020-11-29 19:58:04,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:58:04,922 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2020-11-29 19:58:04,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-11-29 19:58:04,922 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2020-11-29 19:58:04,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-29 19:58:04,923 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:58:04,923 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:58:05,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-11-29 19:58:05,144 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:58:05,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:05,144 INFO L82 PathProgramCache]: Analyzing trace with hash 32030074, now seen corresponding path program 21 times [2020-11-29 19:58:05,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:05,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142675964] [2020-11-29 19:58:05,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:09,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142675964] [2020-11-29 19:58:09,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499446960] [2020-11-29 19:58:09,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:58:09,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2020-11-29 19:58:09,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:58:09,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 90 conjunts are in the unsatisfiable core [2020-11-29 19:58:09,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:58:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:09,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:58:09,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 92 [2020-11-29 19:58:09,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634741471] [2020-11-29 19:58:09,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 92 states [2020-11-29 19:58:09,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:58:09,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2020-11-29 19:58:09,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2020-11-29 19:58:09,361 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 92 states. [2020-11-29 19:58:11,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:58:11,740 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2020-11-29 19:58:11,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-11-29 19:58:11,741 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 181 [2020-11-29 19:58:11,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:58:11,742 INFO L225 Difference]: With dead ends: 188 [2020-11-29 19:58:11,742 INFO L226 Difference]: Without dead ends: 185 [2020-11-29 19:58:11,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2020-11-29 19:58:11,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-29 19:58:11,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2020-11-29 19:58:11,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-11-29 19:58:11,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2020-11-29 19:58:11,746 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 181 [2020-11-29 19:58:11,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:58:11,746 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2020-11-29 19:58:11,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 92 states. [2020-11-29 19:58:11,746 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2020-11-29 19:58:11,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-11-29 19:58:11,747 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:58:11,747 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:58:11,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-11-29 19:58:11,960 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:58:11,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:11,960 INFO L82 PathProgramCache]: Analyzing trace with hash 708604596, now seen corresponding path program 22 times [2020-11-29 19:58:11,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:11,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789795804] [2020-11-29 19:58:11,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:16,239 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:16,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789795804] [2020-11-29 19:58:16,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063956699] [2020-11-29 19:58:16,240 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:58:16,328 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:58:16,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:58:16,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 91 conjunts are in the unsatisfiable core [2020-11-29 19:58:16,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:58:16,433 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:16,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:58:16,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 93 [2020-11-29 19:58:16,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233946124] [2020-11-29 19:58:16,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 93 states [2020-11-29 19:58:16,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:58:16,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2020-11-29 19:58:16,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2020-11-29 19:58:16,435 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 93 states. [2020-11-29 19:58:19,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:58:19,045 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2020-11-29 19:58:19,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-11-29 19:58:19,045 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 183 [2020-11-29 19:58:19,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:58:19,047 INFO L225 Difference]: With dead ends: 190 [2020-11-29 19:58:19,047 INFO L226 Difference]: Without dead ends: 187 [2020-11-29 19:58:19,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2020-11-29 19:58:19,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-11-29 19:58:19,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 186. [2020-11-29 19:58:19,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-11-29 19:58:19,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2020-11-29 19:58:19,053 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 183 [2020-11-29 19:58:19,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:58:19,053 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2020-11-29 19:58:19,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 93 states. [2020-11-29 19:58:19,054 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2020-11-29 19:58:19,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-11-29 19:58:19,055 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:58:19,055 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:58:19,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:58:19,268 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:58:19,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:19,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1938308754, now seen corresponding path program 23 times [2020-11-29 19:58:19,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:19,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254498738] [2020-11-29 19:58:19,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:24,245 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:24,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254498738] [2020-11-29 19:58:24,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377547978] [2020-11-29 19:58:24,246 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:58:24,345 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-11-29 19:58:24,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:58:24,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 92 conjunts are in the unsatisfiable core [2020-11-29 19:58:24,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:58:24,450 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:24,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:58:24,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 94 [2020-11-29 19:58:24,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124232988] [2020-11-29 19:58:24,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 94 states [2020-11-29 19:58:24,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:58:24,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2020-11-29 19:58:24,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2020-11-29 19:58:24,454 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 94 states. [2020-11-29 19:58:26,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:58:26,025 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2020-11-29 19:58:26,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-11-29 19:58:26,025 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 185 [2020-11-29 19:58:26,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:58:26,027 INFO L225 Difference]: With dead ends: 192 [2020-11-29 19:58:26,027 INFO L226 Difference]: Without dead ends: 189 [2020-11-29 19:58:26,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2020-11-29 19:58:26,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-11-29 19:58:26,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2020-11-29 19:58:26,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-11-29 19:58:26,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2020-11-29 19:58:26,034 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 185 [2020-11-29 19:58:26,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:58:26,035 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2020-11-29 19:58:26,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 94 states. [2020-11-29 19:58:26,035 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2020-11-29 19:58:26,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-11-29 19:58:26,036 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:58:26,037 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:58:26,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-11-29 19:58:26,240 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:58:26,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:26,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1293568424, now seen corresponding path program 24 times [2020-11-29 19:58:26,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:26,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717115185] [2020-11-29 19:58:26,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:31,216 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:31,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717115185] [2020-11-29 19:58:31,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672490853] [2020-11-29 19:58:31,216 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:58:31,335 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2020-11-29 19:58:31,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:58:31,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 93 conjunts are in the unsatisfiable core [2020-11-29 19:58:31,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:58:31,454 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:31,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:58:31,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 95 [2020-11-29 19:58:31,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142420549] [2020-11-29 19:58:31,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 95 states [2020-11-29 19:58:31,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:58:31,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2020-11-29 19:58:31,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2020-11-29 19:58:31,457 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 95 states. [2020-11-29 19:58:34,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:58:34,361 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2020-11-29 19:58:34,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2020-11-29 19:58:34,362 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 187 [2020-11-29 19:58:34,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:58:34,363 INFO L225 Difference]: With dead ends: 194 [2020-11-29 19:58:34,363 INFO L226 Difference]: Without dead ends: 191 [2020-11-29 19:58:34,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2020-11-29 19:58:34,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-29 19:58:34,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2020-11-29 19:58:34,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-11-29 19:58:34,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2020-11-29 19:58:34,370 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 187 [2020-11-29 19:58:34,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:58:34,371 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2020-11-29 19:58:34,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 95 states. [2020-11-29 19:58:34,371 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2020-11-29 19:58:34,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-11-29 19:58:34,372 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:58:34,372 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:58:34,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:58:34,572 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:58:34,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:34,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1866181474, now seen corresponding path program 25 times [2020-11-29 19:58:34,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:34,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976276828] [2020-11-29 19:58:34,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:39,791 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:39,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976276828] [2020-11-29 19:58:39,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462917413] [2020-11-29 19:58:39,792 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:58:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:39,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 94 conjunts are in the unsatisfiable core [2020-11-29 19:58:39,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:58:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:39,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:58:39,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 96 [2020-11-29 19:58:39,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789158520] [2020-11-29 19:58:39,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 96 states [2020-11-29 19:58:39,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:58:39,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2020-11-29 19:58:39,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2020-11-29 19:58:39,989 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 96 states. [2020-11-29 19:58:41,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:58:41,587 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2020-11-29 19:58:41,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-11-29 19:58:41,587 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 189 [2020-11-29 19:58:41,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:58:41,588 INFO L225 Difference]: With dead ends: 196 [2020-11-29 19:58:41,588 INFO L226 Difference]: Without dead ends: 193 [2020-11-29 19:58:41,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2020-11-29 19:58:41,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-11-29 19:58:41,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 192. [2020-11-29 19:58:41,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-11-29 19:58:41,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2020-11-29 19:58:41,595 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 189 [2020-11-29 19:58:41,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:58:41,595 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2020-11-29 19:58:41,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 96 states. [2020-11-29 19:58:41,595 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2020-11-29 19:58:41,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-11-29 19:58:41,596 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:58:41,597 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:58:41,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-11-29 19:58:41,816 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:58:41,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:41,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1903458660, now seen corresponding path program 26 times [2020-11-29 19:58:41,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:41,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161355569] [2020-11-29 19:58:41,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:47,366 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:47,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161355569] [2020-11-29 19:58:47,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447243089] [2020-11-29 19:58:47,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:58:47,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:58:47,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:58:47,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 95 conjunts are in the unsatisfiable core [2020-11-29 19:58:47,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:58:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:47,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:58:47,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 97 [2020-11-29 19:58:47,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171130744] [2020-11-29 19:58:47,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 97 states [2020-11-29 19:58:47,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:58:47,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2020-11-29 19:58:47,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2020-11-29 19:58:47,580 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 97 states. [2020-11-29 19:58:50,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:58:50,614 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2020-11-29 19:58:50,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-11-29 19:58:50,615 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 191 [2020-11-29 19:58:50,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:58:50,616 INFO L225 Difference]: With dead ends: 198 [2020-11-29 19:58:50,616 INFO L226 Difference]: Without dead ends: 195 [2020-11-29 19:58:50,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2020-11-29 19:58:50,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-11-29 19:58:50,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2020-11-29 19:58:50,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-11-29 19:58:50,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2020-11-29 19:58:50,621 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 191 [2020-11-29 19:58:50,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:58:50,621 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2020-11-29 19:58:50,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 97 states. [2020-11-29 19:58:50,621 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2020-11-29 19:58:50,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-11-29 19:58:50,624 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:58:50,624 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:58:50,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:58:50,840 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:58:50,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:50,840 INFO L82 PathProgramCache]: Analyzing trace with hash 424770390, now seen corresponding path program 27 times [2020-11-29 19:58:50,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:50,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573884786] [2020-11-29 19:58:50,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:58:56,326 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:56,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573884786] [2020-11-29 19:58:56,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248221822] [2020-11-29 19:58:56,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:58:56,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2020-11-29 19:58:56,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:58:56,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 96 conjunts are in the unsatisfiable core [2020-11-29 19:58:56,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:58:56,537 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:58:56,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:58:56,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 98 [2020-11-29 19:58:56,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828733944] [2020-11-29 19:58:56,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 98 states [2020-11-29 19:58:56,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:58:56,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2020-11-29 19:58:56,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2020-11-29 19:58:56,540 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 98 states. [2020-11-29 19:58:59,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:58:59,433 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2020-11-29 19:58:59,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-11-29 19:58:59,434 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 193 [2020-11-29 19:58:59,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:58:59,435 INFO L225 Difference]: With dead ends: 200 [2020-11-29 19:58:59,435 INFO L226 Difference]: Without dead ends: 197 [2020-11-29 19:58:59,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2020-11-29 19:58:59,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-11-29 19:58:59,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2020-11-29 19:58:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-11-29 19:58:59,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2020-11-29 19:58:59,441 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 193 [2020-11-29 19:58:59,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:58:59,442 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2020-11-29 19:58:59,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 98 states. [2020-11-29 19:58:59,442 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2020-11-29 19:58:59,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-11-29 19:58:59,443 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:58:59,443 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:58:59,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-11-29 19:58:59,656 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:58:59,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:59,656 INFO L82 PathProgramCache]: Analyzing trace with hash 174926224, now seen corresponding path program 28 times [2020-11-29 19:58:59,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:59,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882087552] [2020-11-29 19:58:59,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:05,289 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:59:05,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882087552] [2020-11-29 19:59:05,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732922572] [2020-11-29 19:59:05,290 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:59:05,368 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:59:05,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:59:05,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 97 conjunts are in the unsatisfiable core [2020-11-29 19:59:05,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:59:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:59:05,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:59:05,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 99 [2020-11-29 19:59:05,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349971060] [2020-11-29 19:59:05,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 99 states [2020-11-29 19:59:05,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:05,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2020-11-29 19:59:05,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2020-11-29 19:59:05,481 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 99 states. [2020-11-29 19:59:08,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:08,357 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2020-11-29 19:59:08,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2020-11-29 19:59:08,357 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 195 [2020-11-29 19:59:08,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:08,359 INFO L225 Difference]: With dead ends: 202 [2020-11-29 19:59:08,359 INFO L226 Difference]: Without dead ends: 199 [2020-11-29 19:59:08,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2020-11-29 19:59:08,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-11-29 19:59:08,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2020-11-29 19:59:08,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-11-29 19:59:08,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2020-11-29 19:59:08,365 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 195 [2020-11-29 19:59:08,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:08,366 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2020-11-29 19:59:08,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 99 states. [2020-11-29 19:59:08,366 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2020-11-29 19:59:08,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-11-29 19:59:08,367 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:08,368 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:59:08,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:59:08,584 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:08,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:08,584 INFO L82 PathProgramCache]: Analyzing trace with hash 592851274, now seen corresponding path program 29 times [2020-11-29 19:59:08,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:08,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588823370] [2020-11-29 19:59:08,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:14,369 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:59:14,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588823370] [2020-11-29 19:59:14,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624403678] [2020-11-29 19:59:14,370 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:59:14,472 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2020-11-29 19:59:14,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:59:14,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 98 conjunts are in the unsatisfiable core [2020-11-29 19:59:14,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:59:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:59:14,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:59:14,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 100 [2020-11-29 19:59:14,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845891052] [2020-11-29 19:59:14,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 100 states [2020-11-29 19:59:14,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:14,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2020-11-29 19:59:14,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2020-11-29 19:59:14,569 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 100 states. [2020-11-29 19:59:17,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:17,452 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2020-11-29 19:59:17,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-11-29 19:59:17,453 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 197 [2020-11-29 19:59:17,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:17,454 INFO L225 Difference]: With dead ends: 204 [2020-11-29 19:59:17,454 INFO L226 Difference]: Without dead ends: 201 [2020-11-29 19:59:17,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2020-11-29 19:59:17,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-11-29 19:59:17,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2020-11-29 19:59:17,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-11-29 19:59:17,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2020-11-29 19:59:17,460 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 197 [2020-11-29 19:59:17,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:17,460 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2020-11-29 19:59:17,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 100 states. [2020-11-29 19:59:17,461 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2020-11-29 19:59:17,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-11-29 19:59:17,462 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:17,462 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:59:17,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-11-29 19:59:17,671 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:17,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:17,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1508101500, now seen corresponding path program 30 times [2020-11-29 19:59:17,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:17,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072588706] [2020-11-29 19:59:17,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:23,708 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:59:23,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072588706] [2020-11-29 19:59:23,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720209926] [2020-11-29 19:59:23,708 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:59:23,831 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2020-11-29 19:59:23,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:59:23,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 99 conjunts are in the unsatisfiable core [2020-11-29 19:59:23,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:59:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:59:23,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:59:23,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 101 [2020-11-29 19:59:23,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877166847] [2020-11-29 19:59:23,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 101 states [2020-11-29 19:59:23,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:23,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2020-11-29 19:59:23,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2020-11-29 19:59:23,964 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 101 states. [2020-11-29 19:59:27,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:27,016 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2020-11-29 19:59:27,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2020-11-29 19:59:27,017 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 199 [2020-11-29 19:59:27,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:27,018 INFO L225 Difference]: With dead ends: 206 [2020-11-29 19:59:27,018 INFO L226 Difference]: Without dead ends: 203 [2020-11-29 19:59:27,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2020-11-29 19:59:27,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-11-29 19:59:27,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2020-11-29 19:59:27,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-29 19:59:27,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2020-11-29 19:59:27,029 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 199 [2020-11-29 19:59:27,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:27,029 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2020-11-29 19:59:27,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 101 states. [2020-11-29 19:59:27,030 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2020-11-29 19:59:27,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-11-29 19:59:27,031 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:27,031 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:59:27,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:59:27,252 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:27,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:27,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1889088194, now seen corresponding path program 31 times [2020-11-29 19:59:27,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:27,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882603635] [2020-11-29 19:59:27,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:33,496 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:59:33,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882603635] [2020-11-29 19:59:33,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333472105] [2020-11-29 19:59:33,496 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:59:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:33,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 100 conjunts are in the unsatisfiable core [2020-11-29 19:59:33,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:59:33,655 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:59:33,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:59:33,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 102 [2020-11-29 19:59:33,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733828653] [2020-11-29 19:59:33,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 102 states [2020-11-29 19:59:33,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:33,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2020-11-29 19:59:33,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2020-11-29 19:59:33,658 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 102 states. [2020-11-29 19:59:36,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:36,713 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2020-11-29 19:59:36,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2020-11-29 19:59:36,714 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 201 [2020-11-29 19:59:36,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:36,715 INFO L225 Difference]: With dead ends: 208 [2020-11-29 19:59:36,715 INFO L226 Difference]: Without dead ends: 205 [2020-11-29 19:59:36,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2020-11-29 19:59:36,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-11-29 19:59:36,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2020-11-29 19:59:36,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-11-29 19:59:36,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2020-11-29 19:59:36,721 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 201 [2020-11-29 19:59:36,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:36,722 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2020-11-29 19:59:36,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 102 states. [2020-11-29 19:59:36,722 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2020-11-29 19:59:36,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-11-29 19:59:36,723 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:36,724 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:59:36,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-11-29 19:59:36,948 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:36,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:36,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1349886328, now seen corresponding path program 32 times [2020-11-29 19:59:36,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:36,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510945244] [2020-11-29 19:59:36,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:43,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:59:43,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510945244] [2020-11-29 19:59:43,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983306622] [2020-11-29 19:59:43,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:59:43,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:59:43,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:59:43,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 101 conjunts are in the unsatisfiable core [2020-11-29 19:59:43,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:59:43,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:59:43,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:59:43,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 103 [2020-11-29 19:59:43,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518868116] [2020-11-29 19:59:43,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 103 states [2020-11-29 19:59:43,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:43,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2020-11-29 19:59:43,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2020-11-29 19:59:43,643 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 103 states. [2020-11-29 19:59:46,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:46,677 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2020-11-29 19:59:46,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-11-29 19:59:46,678 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 203 [2020-11-29 19:59:46,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:46,679 INFO L225 Difference]: With dead ends: 209 [2020-11-29 19:59:46,679 INFO L226 Difference]: Without dead ends: 206 [2020-11-29 19:59:46,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2020-11-29 19:59:46,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-11-29 19:59:46,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-11-29 19:59:46,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-11-29 19:59:46,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2020-11-29 19:59:46,684 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 203 [2020-11-29 19:59:46,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:46,684 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2020-11-29 19:59:46,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 103 states. [2020-11-29 19:59:46,684 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2020-11-29 19:59:46,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-11-29 19:59:46,685 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:46,685 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:59:46,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2020-11-29 19:59:46,885 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:46,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:46,886 INFO L82 PathProgramCache]: Analyzing trace with hash 153112370, now seen corresponding path program 33 times [2020-11-29 19:59:46,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:46,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050846108] [2020-11-29 19:59:46,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:49,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:59:49,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050846108] [2020-11-29 19:59:49,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467989721] [2020-11-29 19:59:49,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/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 [2020-11-29 19:59:49,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2020-11-29 19:59:49,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:59:49,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 105 conjunts are in the unsatisfiable core [2020-11-29 19:59:49,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:59:49,517 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:59:49,522 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:59:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:59:49,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:59:49,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 55 [2020-11-29 19:59:49,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068732829] [2020-11-29 19:59:49,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-11-29 19:59:49,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:49,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-11-29 19:59:49,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2020-11-29 19:59:49,748 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 55 states. [2020-11-29 19:59:52,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:52,034 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2020-11-29 19:59:52,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-29 19:59:52,034 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 205 [2020-11-29 19:59:52,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:52,036 INFO L225 Difference]: With dead ends: 212 [2020-11-29 19:59:52,036 INFO L226 Difference]: Without dead ends: 209 [2020-11-29 19:59:52,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=113, Invalid=2967, Unknown=0, NotChecked=0, Total=3080 [2020-11-29 19:59:52,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-11-29 19:59:52,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2020-11-29 19:59:52,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-11-29 19:59:52,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2020-11-29 19:59:52,046 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 205 [2020-11-29 19:59:52,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:52,047 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2020-11-29 19:59:52,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-11-29 19:59:52,047 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2020-11-29 19:59:52,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-11-29 19:59:52,048 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:59:52,048 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:59:52,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:59:52,264 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:59:52,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:59:52,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1104574060, now seen corresponding path program 34 times [2020-11-29 19:59:52,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:59:52,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727182355] [2020-11-29 19:59:52,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:59:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:59:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 1156 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:59:54,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727182355] [2020-11-29 19:59:54,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:59:54,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2020-11-29 19:59:54,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065499264] [2020-11-29 19:59:54,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-11-29 19:59:54,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:59:54,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-11-29 19:59:54,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-11-29 19:59:54,285 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 52 states. [2020-11-29 19:59:55,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:59:55,002 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2020-11-29 19:59:55,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-29 19:59:55,003 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 207 [2020-11-29 19:59:55,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:59:55,003 INFO L225 Difference]: With dead ends: 208 [2020-11-29 19:59:55,003 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 19:59:55,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-11-29 19:59:55,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 19:59:55,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 19:59:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 19:59:55,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 19:59:55,004 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 207 [2020-11-29 19:59:55,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:59:55,004 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:59:55,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-11-29 19:59:55,005 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:59:55,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 19:59:55,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-11-29 19:59:55,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 19:59:57,020 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 210 DAG size of output: 206 [2020-11-29 19:59:57,175 INFO L270 CegarLoopResult]: At program point L927(lines 181 928) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 28 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 28) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,175 INFO L270 CegarLoopResult]: At program point L795(lines 247 796) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 39 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 39) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,175 INFO L270 CegarLoopResult]: At program point L663(lines 313 664) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 50) (<= ULTIMATE.start_main_~main__y~0 50) (<= 50 ULTIMATE.start_main_~main__y~0) (<= 50 ULTIMATE.start_main_~main__x~0)) [2020-11-29 19:59:57,175 INFO L270 CegarLoopResult]: At program point L531(lines 379 532) the Hoare annotation is: (and (<= 61 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 61) (<= ULTIMATE.start_main_~main__y~0 61) (<= 61 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,176 INFO L274 CegarLoopResult]: For program point L367(lines 367 556) no Hoare annotation was computed. [2020-11-29 19:59:57,176 INFO L274 CegarLoopResult]: For program point L301(lines 301 688) no Hoare annotation was computed. [2020-11-29 19:59:57,176 INFO L274 CegarLoopResult]: For program point L235(lines 235 820) no Hoare annotation was computed. [2020-11-29 19:59:57,176 INFO L274 CegarLoopResult]: For program point L169(lines 169 952) no Hoare annotation was computed. [2020-11-29 19:59:57,176 INFO L274 CegarLoopResult]: For program point L103(lines 103 1084) no Hoare annotation was computed. [2020-11-29 19:59:57,176 INFO L274 CegarLoopResult]: For program point L37(lines 37 1216) no Hoare annotation was computed. [2020-11-29 19:59:57,176 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-29 19:59:57,176 INFO L274 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-11-29 19:59:57,176 INFO L270 CegarLoopResult]: At program point L1227(lines 31 1228) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 3) (<= 3 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,176 INFO L270 CegarLoopResult]: At program point L1095(lines 97 1096) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 14 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 14) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,176 INFO L270 CegarLoopResult]: At program point L963(lines 163 964) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 25 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 25) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,177 INFO L270 CegarLoopResult]: At program point L831(lines 229 832) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 36) (<= 36 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,177 INFO L270 CegarLoopResult]: At program point L699(lines 295 700) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 47) (<= ULTIMATE.start_main_~main__y~0 50) (<= 47 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,177 INFO L270 CegarLoopResult]: At program point L567(lines 361 568) the Hoare annotation is: (and (<= 58 ULTIMATE.start_main_~main__y~0) (<= 58 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 58) (<= ULTIMATE.start_main_~main__x~0 58)) [2020-11-29 19:59:57,177 INFO L274 CegarLoopResult]: For program point L403(lines 403 484) no Hoare annotation was computed. [2020-11-29 19:59:57,177 INFO L274 CegarLoopResult]: For program point L337(lines 337 616) no Hoare annotation was computed. [2020-11-29 19:59:57,177 INFO L274 CegarLoopResult]: For program point L271(lines 271 748) no Hoare annotation was computed. [2020-11-29 19:59:57,177 INFO L274 CegarLoopResult]: For program point L205(lines 205 880) no Hoare annotation was computed. [2020-11-29 19:59:57,177 INFO L274 CegarLoopResult]: For program point L139(lines 139 1012) no Hoare annotation was computed. [2020-11-29 19:59:57,177 INFO L274 CegarLoopResult]: For program point L73(lines 73 1144) no Hoare annotation was computed. [2020-11-29 19:59:57,177 INFO L270 CegarLoopResult]: At program point L1131(lines 79 1132) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 11 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 11) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,177 INFO L270 CegarLoopResult]: At program point L999(lines 145 1000) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 22 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 22) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,177 INFO L270 CegarLoopResult]: At program point L867(lines 211 868) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 33) (<= 33 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,177 INFO L270 CegarLoopResult]: At program point L735(lines 277 736) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 44) (<= ULTIMATE.start_main_~main__y~0 50) (<= 44 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,178 INFO L270 CegarLoopResult]: At program point L603(lines 343 604) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 55) (<= 55 ULTIMATE.start_main_~main__y~0) (<= 55 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 55)) [2020-11-29 19:59:57,178 INFO L270 CegarLoopResult]: At program point L471(lines 409 472) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 66) (<= 66 ULTIMATE.start_main_~main__x~0) (<= 66 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 66)) [2020-11-29 19:59:57,178 INFO L274 CegarLoopResult]: For program point L373(lines 373 544) no Hoare annotation was computed. [2020-11-29 19:59:57,178 INFO L274 CegarLoopResult]: For program point L307(lines 307 676) no Hoare annotation was computed. [2020-11-29 19:59:57,178 INFO L274 CegarLoopResult]: For program point L241(lines 241 808) no Hoare annotation was computed. [2020-11-29 19:59:57,178 INFO L274 CegarLoopResult]: For program point L175(lines 175 940) no Hoare annotation was computed. [2020-11-29 19:59:57,178 INFO L274 CegarLoopResult]: For program point L109(lines 109 1072) no Hoare annotation was computed. [2020-11-29 19:59:57,178 INFO L274 CegarLoopResult]: For program point L43(lines 43 1204) no Hoare annotation was computed. [2020-11-29 19:59:57,178 INFO L270 CegarLoopResult]: At program point L1167(lines 61 1168) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 8 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 8) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,178 INFO L270 CegarLoopResult]: At program point L1035(lines 127 1036) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 19) (<= 50 ULTIMATE.start_main_~main__y~0) (<= 19 ULTIMATE.start_main_~main__x~0)) [2020-11-29 19:59:57,178 INFO L270 CegarLoopResult]: At program point L903(lines 193 904) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 30) (<= 30 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,178 INFO L270 CegarLoopResult]: At program point L771(lines 259 772) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 41 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 41) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,179 INFO L270 CegarLoopResult]: At program point L639(lines 325 640) the Hoare annotation is: (and (<= 52 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 52) (<= ULTIMATE.start_main_~main__x~0 52) (<= 52 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,179 INFO L270 CegarLoopResult]: At program point L507(lines 391 508) the Hoare annotation is: (and (<= 63 ULTIMATE.start_main_~main__x~0) (<= 63 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 63) (<= ULTIMATE.start_main_~main__y~0 63)) [2020-11-29 19:59:57,179 INFO L274 CegarLoopResult]: For program point L442(lines 442 451) no Hoare annotation was computed. [2020-11-29 19:59:57,179 INFO L274 CegarLoopResult]: For program point L409(lines 409 472) no Hoare annotation was computed. [2020-11-29 19:59:57,179 INFO L274 CegarLoopResult]: For program point L343(lines 343 604) no Hoare annotation was computed. [2020-11-29 19:59:57,179 INFO L274 CegarLoopResult]: For program point L277(lines 277 736) no Hoare annotation was computed. [2020-11-29 19:59:57,179 INFO L274 CegarLoopResult]: For program point L211(lines 211 868) no Hoare annotation was computed. [2020-11-29 19:59:57,179 INFO L274 CegarLoopResult]: For program point L145(lines 145 1000) no Hoare annotation was computed. [2020-11-29 19:59:57,179 INFO L274 CegarLoopResult]: For program point L79(lines 79 1132) no Hoare annotation was computed. [2020-11-29 19:59:57,185 INFO L270 CegarLoopResult]: At program point L1203(lines 43 1204) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 50 ULTIMATE.start_main_~main__y~0) (<= 5 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 5)) [2020-11-29 19:59:57,185 INFO L270 CegarLoopResult]: At program point L1071(lines 109 1072) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 16 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 16)) [2020-11-29 19:59:57,185 INFO L270 CegarLoopResult]: At program point L939(lines 175 940) the Hoare annotation is: (and (<= 27 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 27) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,185 INFO L270 CegarLoopResult]: At program point L807(lines 241 808) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 38) (<= 38 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,185 INFO L270 CegarLoopResult]: At program point L675(lines 307 676) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 49) (<= ULTIMATE.start_main_~main__y~0 50) (<= 49 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,185 INFO L270 CegarLoopResult]: At program point L543(lines 373 544) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 60) (<= 60 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 60) (<= 60 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,185 INFO L274 CegarLoopResult]: For program point L379(lines 379 532) no Hoare annotation was computed. [2020-11-29 19:59:57,185 INFO L274 CegarLoopResult]: For program point L313(lines 313 664) no Hoare annotation was computed. [2020-11-29 19:59:57,185 INFO L274 CegarLoopResult]: For program point L247(lines 247 796) no Hoare annotation was computed. [2020-11-29 19:59:57,185 INFO L274 CegarLoopResult]: For program point L181(lines 181 928) no Hoare annotation was computed. [2020-11-29 19:59:57,186 INFO L274 CegarLoopResult]: For program point L115(lines 115 1060) no Hoare annotation was computed. [2020-11-29 19:59:57,186 INFO L274 CegarLoopResult]: For program point L49(lines 49 1192) no Hoare annotation was computed. [2020-11-29 19:59:57,186 INFO L270 CegarLoopResult]: At program point L1239(lines 25 1240) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 2 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 2) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,186 INFO L270 CegarLoopResult]: At program point L1107(lines 91 1108) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 13 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 13) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,186 INFO L274 CegarLoopResult]: For program point L17(lines 17 1257) no Hoare annotation was computed. [2020-11-29 19:59:57,186 INFO L270 CegarLoopResult]: At program point L975(lines 157 976) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 24 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 24)) [2020-11-29 19:59:57,186 INFO L270 CegarLoopResult]: At program point L843(lines 223 844) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 35 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 35) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,186 INFO L270 CegarLoopResult]: At program point L711(lines 289 712) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 46 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 46) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,186 INFO L270 CegarLoopResult]: At program point L579(lines 355 580) the Hoare annotation is: (and (<= 57 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 57) (<= 57 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 57)) [2020-11-29 19:59:57,187 INFO L274 CegarLoopResult]: For program point L415(lines 415 460) no Hoare annotation was computed. [2020-11-29 19:59:57,187 INFO L274 CegarLoopResult]: For program point L349(lines 349 592) no Hoare annotation was computed. [2020-11-29 19:59:57,187 INFO L274 CegarLoopResult]: For program point L283(lines 283 724) no Hoare annotation was computed. [2020-11-29 19:59:57,187 INFO L274 CegarLoopResult]: For program point L217(lines 217 856) no Hoare annotation was computed. [2020-11-29 19:59:57,187 INFO L274 CegarLoopResult]: For program point L151(lines 151 988) no Hoare annotation was computed. [2020-11-29 19:59:57,187 INFO L274 CegarLoopResult]: For program point L85(lines 85 1120) no Hoare annotation was computed. [2020-11-29 19:59:57,187 INFO L274 CegarLoopResult]: For program point L19(lines 19 1252) no Hoare annotation was computed. [2020-11-29 19:59:57,187 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 19:59:57,187 INFO L270 CegarLoopResult]: At program point L1143(lines 73 1144) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 10) (<= 10 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,187 INFO L270 CegarLoopResult]: At program point L1011(lines 139 1012) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 21) (<= 21 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,188 INFO L270 CegarLoopResult]: At program point L879(lines 205 880) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 32 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 32) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,188 INFO L270 CegarLoopResult]: At program point L747(lines 271 748) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 43 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 43) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,188 INFO L270 CegarLoopResult]: At program point L615(lines 337 616) the Hoare annotation is: (and (<= 54 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 54) (<= 54 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 54)) [2020-11-29 19:59:57,188 INFO L270 CegarLoopResult]: At program point L483(lines 403 484) the Hoare annotation is: (and (<= 65 ULTIMATE.start_main_~main__y~0) (<= 65 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 65) (<= ULTIMATE.start_main_~main__y~0 65)) [2020-11-29 19:59:57,188 INFO L274 CegarLoopResult]: For program point L385(lines 385 520) no Hoare annotation was computed. [2020-11-29 19:59:57,188 INFO L274 CegarLoopResult]: For program point L319(lines 319 652) no Hoare annotation was computed. [2020-11-29 19:59:57,188 INFO L274 CegarLoopResult]: For program point L253(lines 253 784) no Hoare annotation was computed. [2020-11-29 19:59:57,188 INFO L274 CegarLoopResult]: For program point L187(lines 187 916) no Hoare annotation was computed. [2020-11-29 19:59:57,188 INFO L274 CegarLoopResult]: For program point L121(lines 121 1048) no Hoare annotation was computed. [2020-11-29 19:59:57,188 INFO L274 CegarLoopResult]: For program point L55(lines 55 1180) no Hoare annotation was computed. [2020-11-29 19:59:57,188 INFO L270 CegarLoopResult]: At program point L1179(lines 55 1180) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 7 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 7) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,189 INFO L270 CegarLoopResult]: At program point L1047(lines 121 1048) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 18) (<= ULTIMATE.start_main_~main__y~0 50) (<= 18 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,189 INFO L270 CegarLoopResult]: At program point L915(lines 187 916) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 29) (<= 29 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,189 INFO L270 CegarLoopResult]: At program point L783(lines 253 784) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 40 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 40)) [2020-11-29 19:59:57,189 INFO L270 CegarLoopResult]: At program point L651(lines 319 652) the Hoare annotation is: (and (<= 51 ULTIMATE.start_main_~main__y~0) (<= 51 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 51) (<= ULTIMATE.start_main_~main__x~0 51)) [2020-11-29 19:59:57,189 INFO L270 CegarLoopResult]: At program point L519(lines 385 520) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 62) (<= 62 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 62) (<= 62 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,189 INFO L274 CegarLoopResult]: For program point L355(lines 355 580) no Hoare annotation was computed. [2020-11-29 19:59:57,189 INFO L274 CegarLoopResult]: For program point L289(lines 289 712) no Hoare annotation was computed. [2020-11-29 19:59:57,189 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 19:59:57,189 INFO L274 CegarLoopResult]: For program point L223(lines 223 844) no Hoare annotation was computed. [2020-11-29 19:59:57,189 INFO L274 CegarLoopResult]: For program point L157(lines 157 976) no Hoare annotation was computed. [2020-11-29 19:59:57,190 INFO L274 CegarLoopResult]: For program point L91(lines 91 1108) no Hoare annotation was computed. [2020-11-29 19:59:57,190 INFO L274 CegarLoopResult]: For program point L25(lines 25 1240) no Hoare annotation was computed. [2020-11-29 19:59:57,190 INFO L274 CegarLoopResult]: For program point L422(lines 422 433) no Hoare annotation was computed. [2020-11-29 19:59:57,190 INFO L270 CegarLoopResult]: At program point L1215(lines 37 1216) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 4 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 4) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,190 INFO L270 CegarLoopResult]: At program point L1083(lines 103 1084) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 15) (<= 15 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,190 INFO L270 CegarLoopResult]: At program point L951(lines 169 952) the Hoare annotation is: (and (<= 26 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 26) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,190 INFO L270 CegarLoopResult]: At program point L819(lines 235 820) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 37) (<= 37 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,190 INFO L270 CegarLoopResult]: At program point L687(lines 301 688) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 48 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 48) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,190 INFO L270 CegarLoopResult]: At program point L555(lines 367 556) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 59) (<= 59 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 59) (<= 59 ULTIMATE.start_main_~main__x~0)) [2020-11-29 19:59:57,190 INFO L274 CegarLoopResult]: For program point L391(lines 391 508) no Hoare annotation was computed. [2020-11-29 19:59:57,190 INFO L274 CegarLoopResult]: For program point L325(lines 325 640) no Hoare annotation was computed. [2020-11-29 19:59:57,190 INFO L274 CegarLoopResult]: For program point L259(lines 259 772) no Hoare annotation was computed. [2020-11-29 19:59:57,190 INFO L274 CegarLoopResult]: For program point L193(lines 193 904) no Hoare annotation was computed. [2020-11-29 19:59:57,190 INFO L274 CegarLoopResult]: For program point L127(lines 127 1036) no Hoare annotation was computed. [2020-11-29 19:59:57,191 INFO L274 CegarLoopResult]: For program point L61(lines 61 1168) no Hoare annotation was computed. [2020-11-29 19:59:57,191 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 19:59:57,191 INFO L270 CegarLoopResult]: At program point L1251(lines 19 1252) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 1 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 1) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,191 INFO L270 CegarLoopResult]: At program point L1119(lines 85 1120) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 12) (<= 12 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,191 INFO L270 CegarLoopResult]: At program point L987(lines 151 988) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 23) (<= 23 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,191 INFO L270 CegarLoopResult]: At program point L855(lines 217 856) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 34) (<= 34 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,191 INFO L270 CegarLoopResult]: At program point L723(lines 283 724) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 45 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 45) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,191 INFO L270 CegarLoopResult]: At program point L591(lines 349 592) the Hoare annotation is: (and (<= 56 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 56) (<= 56 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 56)) [2020-11-29 19:59:57,192 INFO L270 CegarLoopResult]: At program point L459(lines 415 460) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~main__x~0 80) (<= ULTIMATE.start_main_~main__y~0 80) (<= 80 ULTIMATE.start_main_~main__x~0) (<= 80 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__y~0 78) (<= 78 ULTIMATE.start_main_~main__y~0) (<= 78 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 78)) (and (<= ULTIMATE.start_main_~main__y~0 81) (<= ULTIMATE.start_main_~main__x~0 81) (<= 81 ULTIMATE.start_main_~main__x~0) (<= 81 ULTIMATE.start_main_~main__y~0)) (and (<= 84 ULTIMATE.start_main_~main__x~0) (<= 84 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 84) (<= ULTIMATE.start_main_~main__x~0 84)) (and (<= 90 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 90) (<= 90 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 90)) (and (<= ULTIMATE.start_main_~main__x~0 92) (<= ULTIMATE.start_main_~main__y~0 92) (<= 92 ULTIMATE.start_main_~main__x~0) (<= 92 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__y~0 75) (<= 75 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 75) (<= 75 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__x~0 77) (<= 77 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 77) (<= 77 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__y~0 71) (<= ULTIMATE.start_main_~main__x~0 71) (<= 71 ULTIMATE.start_main_~main__x~0) (<= 71 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__y~0 88) (<= ULTIMATE.start_main_~main__x~0 88) (<= 88 ULTIMATE.start_main_~main__y~0) (<= 88 ULTIMATE.start_main_~main__x~0)) (and (<= ULTIMATE.start_main_~main__y~0 91) (<= 91 ULTIMATE.start_main_~main__x~0) (<= 91 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 91)) (and (<= 74 ULTIMATE.start_main_~main__y~0) (<= 74 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 74) (<= ULTIMATE.start_main_~main__x~0 74)) (and (<= 69 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 69) (<= 69 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 69)) (and (<= ULTIMATE.start_main_~main__y~0 68) (<= 68 ULTIMATE.start_main_~main__y~0) (<= 68 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 68)) (and (<= 87 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 87) (<= 87 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 87)) (and (<= ULTIMATE.start_main_~main__y~0 72) (<= 72 ULTIMATE.start_main_~main__y~0) (<= 72 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 72)) (and (<= ULTIMATE.start_main_~main__y~0 79) (<= 79 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 79) (<= 79 ULTIMATE.start_main_~main__y~0)) (and (<= 98 ULTIMATE.start_main_~main__y~0) (<= 98 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 98) (<= ULTIMATE.start_main_~main__y~0 98)) (and (<= ULTIMATE.start_main_~main__x~0 89) (<= ULTIMATE.start_main_~main__y~0 89) (<= 89 ULTIMATE.start_main_~main__y~0) (<= 89 ULTIMATE.start_main_~main__x~0)) (and (<= ULTIMATE.start_main_~main__y~0 93) (<= ULTIMATE.start_main_~main__x~0 93) (<= 93 ULTIMATE.start_main_~main__x~0) (<= 93 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__y~0 99) (<= ULTIMATE.start_main_~main__x~0 99) (<= 99 ULTIMATE.start_main_~main__y~0) (<= 99 ULTIMATE.start_main_~main__x~0)) (and (<= ULTIMATE.start_main_~main__x~0 82) (<= 82 ULTIMATE.start_main_~main__y~0) (<= 82 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 82)) (and (<= 85 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 85) (<= 85 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 85)) (and (<= 96 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 96) (<= 96 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 96)) (and (<= 95 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 95) (<= ULTIMATE.start_main_~main__x~0 95) (<= 95 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__x~0 67) (<= ULTIMATE.start_main_~main__y~0 67) (<= 67 ULTIMATE.start_main_~main__y~0) (<= 67 ULTIMATE.start_main_~main__x~0)) (and (<= 70 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 70) (<= 70 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 70)) (and (<= 73 ULTIMATE.start_main_~main__x~0) (<= 73 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 73) (<= ULTIMATE.start_main_~main__y~0 73)) (and (<= ULTIMATE.start_main_~main__y~0 83) (<= ULTIMATE.start_main_~main__x~0 83) (<= 83 ULTIMATE.start_main_~main__y~0) (<= 83 ULTIMATE.start_main_~main__x~0)) (and (<= 94 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 94) (<= 94 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 94)) (and (<= 100 ULTIMATE.start_main_~main__x~0) (<= 100 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 100)) (and (<= ULTIMATE.start_main_~main__y~0 76) (<= ULTIMATE.start_main_~main__x~0 76) (<= 76 ULTIMATE.start_main_~main__y~0) (<= 76 ULTIMATE.start_main_~main__x~0)) (and (<= ULTIMATE.start_main_~main__x~0 86) (<= 86 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 86) (<= 86 ULTIMATE.start_main_~main__y~0)) (and (<= 97 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 97) (<= 97 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 97))) [2020-11-29 19:59:57,192 INFO L274 CegarLoopResult]: For program point L361(lines 361 568) no Hoare annotation was computed. [2020-11-29 19:59:57,192 INFO L274 CegarLoopResult]: For program point L295(lines 295 700) no Hoare annotation was computed. [2020-11-29 19:59:57,192 INFO L274 CegarLoopResult]: For program point L229(lines 229 832) no Hoare annotation was computed. [2020-11-29 19:59:57,192 INFO L274 CegarLoopResult]: For program point L163(lines 163 964) no Hoare annotation was computed. [2020-11-29 19:59:57,192 INFO L274 CegarLoopResult]: For program point L97(lines 97 1096) no Hoare annotation was computed. [2020-11-29 19:59:57,192 INFO L274 CegarLoopResult]: For program point L31(lines 31 1228) no Hoare annotation was computed. [2020-11-29 19:59:57,192 INFO L270 CegarLoopResult]: At program point L1155(lines 67 1156) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 9) (<= 9 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,192 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 19:59:57,192 INFO L270 CegarLoopResult]: At program point L1023(lines 133 1024) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 20 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 20) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,192 INFO L270 CegarLoopResult]: At program point L891(lines 199 892) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 31) (<= 31 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,193 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 19:59:57,193 INFO L270 CegarLoopResult]: At program point L759(lines 265 760) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 42 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 42) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,193 INFO L270 CegarLoopResult]: At program point L627(lines 331 628) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 53) (<= 53 ULTIMATE.start_main_~main__y~0) (<= 53 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 53)) [2020-11-29 19:59:57,193 INFO L270 CegarLoopResult]: At program point L495(lines 397 496) the Hoare annotation is: (and (<= 64 ULTIMATE.start_main_~main__x~0) (<= 64 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 64) (<= ULTIMATE.start_main_~main__x~0 64)) [2020-11-29 19:59:57,193 INFO L274 CegarLoopResult]: For program point L397(lines 397 496) no Hoare annotation was computed. [2020-11-29 19:59:57,193 INFO L274 CegarLoopResult]: For program point L331(lines 331 628) no Hoare annotation was computed. [2020-11-29 19:59:57,193 INFO L274 CegarLoopResult]: For program point L265(lines 265 760) no Hoare annotation was computed. [2020-11-29 19:59:57,193 INFO L277 CegarLoopResult]: At program point L1256(lines 13 1258) the Hoare annotation is: true [2020-11-29 19:59:57,193 INFO L274 CegarLoopResult]: For program point L199(lines 199 892) no Hoare annotation was computed. [2020-11-29 19:59:57,193 INFO L274 CegarLoopResult]: For program point L133(lines 133 1024) no Hoare annotation was computed. [2020-11-29 19:59:57,193 INFO L274 CegarLoopResult]: For program point L67(lines 67 1156) no Hoare annotation was computed. [2020-11-29 19:59:57,193 INFO L270 CegarLoopResult]: At program point L1191(lines 49 1192) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= 6 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 6) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,193 INFO L270 CegarLoopResult]: At program point L1059(lines 115 1060) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 17) (<= 17 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0)) [2020-11-29 19:59:57,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:59:57 BoogieIcfgContainer [2020-11-29 19:59:57,269 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:59:57,270 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:59:57,273 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:59:57,274 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:59:57,274 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:55:12" (3/4) ... [2020-11-29 19:59:57,278 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 19:59:57,312 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 19:59:57,314 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 19:59:57,315 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:59:57,316 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:59:57,474 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_67b87f00-a071-4f34-869a-d4bfe1fddae9/bin/uautomizer/witness.graphml [2020-11-29 19:59:57,475 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:59:57,476 INFO L168 Benchmark]: Toolchain (without parser) took 286723.32 ms. Allocated memory was 88.1 MB in the beginning and 377.5 MB in the end (delta: 289.4 MB). Free memory was 57.8 MB in the beginning and 161.2 MB in the end (delta: -103.4 MB). Peak memory consumption was 187.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:59:57,476 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 88.1 MB. Free memory is still 58.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:59:57,477 INFO L168 Benchmark]: CACSL2BoogieTranslator took 597.50 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 57.6 MB in the beginning and 85.4 MB in the end (delta: -27.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-29 19:59:57,477 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.24 ms. Allocated memory is still 109.1 MB. Free memory was 85.4 MB in the beginning and 82.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:59:57,478 INFO L168 Benchmark]: Boogie Preprocessor took 38.35 ms. Allocated memory is still 109.1 MB. Free memory was 82.9 MB in the beginning and 80.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:59:57,478 INFO L168 Benchmark]: RCFGBuilder took 1040.02 ms. Allocated memory is still 109.1 MB. Free memory was 80.2 MB in the beginning and 59.7 MB in the end (delta: 20.6 MB). Peak memory consumption was 46.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:59:57,479 INFO L168 Benchmark]: TraceAbstraction took 284771.52 ms. Allocated memory was 109.1 MB in the beginning and 377.5 MB in the end (delta: 268.4 MB). Free memory was 59.1 MB in the beginning and 173.8 MB in the end (delta: -114.7 MB). Peak memory consumption was 203.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:59:57,479 INFO L168 Benchmark]: Witness Printer took 204.41 ms. Allocated memory is still 377.5 MB. Free memory was 173.8 MB in the beginning and 161.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:59:57,482 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 88.1 MB. Free memory is still 58.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 597.50 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 57.6 MB in the beginning and 85.4 MB in the end (delta: -27.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.24 ms. Allocated memory is still 109.1 MB. Free memory was 85.4 MB in the beginning and 82.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.35 ms. Allocated memory is still 109.1 MB. Free memory was 82.9 MB in the beginning and 80.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1040.02 ms. Allocated memory is still 109.1 MB. Free memory was 80.2 MB in the beginning and 59.7 MB in the end (delta: 20.6 MB). Peak memory consumption was 46.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 284771.52 ms. Allocated memory was 109.1 MB in the beginning and 377.5 MB in the end (delta: 268.4 MB). Free memory was 59.1 MB in the beginning and 173.8 MB in the end (delta: -114.7 MB). Peak memory consumption was 203.8 MB. Max. memory is 16.1 GB. * Witness Printer took 204.41 ms. Allocated memory is still 377.5 MB. Free memory was 173.8 MB in the beginning and 161.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: ((main__y <= 50 && main__x <= 9) && 9 <= main__x) && 50 <= main__y - InvariantResult [Line: 259]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 41 <= main__x) && main__x <= 41) && 50 <= main__y - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 2 <= main__x) && main__x <= 2) && 50 <= main__y - InvariantResult [Line: 217]: Loop Invariant Derived loop invariant: ((main__y <= 50 && main__x <= 34) && 34 <= main__x) && 50 <= main__y - InvariantResult [Line: 409]: Loop Invariant Derived loop invariant: ((main__x <= 66 && 66 <= main__x) && 66 <= main__y) && main__y <= 66 - InvariantResult [Line: 175]: Loop Invariant Derived loop invariant: ((27 <= main__x && main__y <= 50) && main__x <= 27) && 50 <= main__y - InvariantResult [Line: 367]: Loop Invariant Derived loop invariant: ((main__y <= 59 && 59 <= main__y) && main__x <= 59) && 59 <= main__x - InvariantResult [Line: 133]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 20 <= main__x) && main__x <= 20) && 50 <= main__y - InvariantResult [Line: 325]: Loop Invariant Derived loop invariant: ((52 <= main__x && main__y <= 52) && main__x <= 52) && 52 <= main__y - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 50 <= main__y) && 5 <= main__x) && main__x <= 5 - InvariantResult [Line: 235]: Loop Invariant Derived loop invariant: ((main__y <= 50 && main__x <= 37) && 37 <= main__x) && 50 <= main__y - InvariantResult [Line: 193]: Loop Invariant Derived loop invariant: ((main__y <= 50 && main__x <= 30) && 30 <= main__x) && 50 <= main__y - InvariantResult [Line: 385]: Loop Invariant Derived loop invariant: ((main__y <= 62 && 62 <= main__x) && main__x <= 62) && 62 <= main__y - InvariantResult [Line: 151]: Loop Invariant Derived loop invariant: ((main__y <= 50 && main__x <= 23) && 23 <= main__x) && 50 <= main__y - InvariantResult [Line: 343]: Loop Invariant Derived loop invariant: ((main__y <= 55 && 55 <= main__y) && 55 <= main__x) && main__x <= 55 - InvariantResult [Line: 109]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 16 <= main__x) && 50 <= main__y) && main__x <= 16 - InvariantResult [Line: 301]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 48 <= main__x) && main__x <= 48) && 50 <= main__y - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 1 <= main__x) && main__x <= 1) && 50 <= main__y - InvariantResult [Line: 211]: Loop Invariant Derived loop invariant: ((main__y <= 50 && main__x <= 33) && 33 <= main__x) && 50 <= main__y - InvariantResult [Line: 403]: Loop Invariant Derived loop invariant: ((65 <= main__y && 65 <= main__x) && main__x <= 65) && main__y <= 65 - InvariantResult [Line: 169]: Loop Invariant Derived loop invariant: ((26 <= main__x && main__y <= 50) && main__x <= 26) && 50 <= main__y - InvariantResult [Line: 361]: Loop Invariant Derived loop invariant: ((58 <= main__y && 58 <= main__x) && main__y <= 58) && main__x <= 58 - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: ((main__y <= 50 && main__x <= 19) && 50 <= main__y) && 19 <= main__x - InvariantResult [Line: 319]: Loop Invariant Derived loop invariant: ((51 <= main__y && 51 <= main__x) && main__y <= 51) && main__x <= 51 - InvariantResult [Line: 85]: Loop Invariant Derived loop invariant: ((main__y <= 50 && main__x <= 12) && 12 <= main__x) && 50 <= main__y - InvariantResult [Line: 277]: Loop Invariant Derived loop invariant: ((main__x <= 44 && main__y <= 50) && 44 <= main__x) && 50 <= main__y - InvariantResult [Line: 187]: Loop Invariant Derived loop invariant: ((main__y <= 50 && main__x <= 29) && 29 <= main__x) && 50 <= main__y - InvariantResult [Line: 379]: Loop Invariant Derived loop invariant: ((61 <= main__x && main__x <= 61) && main__y <= 61) && 61 <= main__y - InvariantResult [Line: 145]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 22 <= main__x) && main__x <= 22) && 50 <= main__y - InvariantResult [Line: 337]: Loop Invariant Derived loop invariant: ((54 <= main__y && main__x <= 54) && 54 <= main__x) && main__y <= 54 - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: ((main__y <= 50 && main__x <= 15) && 15 <= main__x) && 50 <= main__y - InvariantResult [Line: 295]: Loop Invariant Derived loop invariant: ((main__x <= 47 && main__y <= 50) && 47 <= main__x) && 50 <= main__y - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 8 <= main__x) && main__x <= 8) && 50 <= main__y - InvariantResult [Line: 253]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 40 <= main__x) && 50 <= main__y) && main__x <= 40 - InvariantResult [Line: 163]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 25 <= main__x) && main__x <= 25) && 50 <= main__y - InvariantResult [Line: 355]: Loop Invariant Derived loop invariant: ((57 <= main__x && main__y <= 57) && 57 <= main__y) && main__x <= 57 - InvariantResult [Line: 121]: Loop Invariant Derived loop invariant: ((main__x <= 18 && main__y <= 50) && 18 <= main__x) && 50 <= main__y - InvariantResult [Line: 313]: Loop Invariant Derived loop invariant: ((main__x <= 50 && main__y <= 50) && 50 <= main__y) && 50 <= main__x - InvariantResult [Line: 79]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 11 <= main__x) && main__x <= 11) && 50 <= main__y - InvariantResult [Line: 271]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 43 <= main__x) && main__x <= 43) && 50 <= main__y - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 4 <= main__x) && main__x <= 4) && 50 <= main__y - InvariantResult [Line: 229]: Loop Invariant Derived loop invariant: ((main__y <= 50 && main__x <= 36) && 36 <= main__x) && 50 <= main__y - InvariantResult [Line: 139]: Loop Invariant Derived loop invariant: ((main__y <= 50 && main__x <= 21) && 21 <= main__x) && 50 <= main__y - InvariantResult [Line: 331]: Loop Invariant Derived loop invariant: ((main__x <= 53 && 53 <= main__y) && 53 <= main__x) && main__y <= 53 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 97]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 14 <= main__x) && main__x <= 14) && 50 <= main__y - InvariantResult [Line: 289]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 46 <= main__x) && main__x <= 46) && 50 <= main__y - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 7 <= main__x) && main__x <= 7) && 50 <= main__y - InvariantResult [Line: 247]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 39 <= main__x) && main__x <= 39) && 50 <= main__y - InvariantResult [Line: 205]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 32 <= main__x) && main__x <= 32) && 50 <= main__y - InvariantResult [Line: 397]: Loop Invariant Derived loop invariant: ((64 <= main__x && 64 <= main__y) && main__y <= 64) && main__x <= 64 - InvariantResult [Line: 115]: Loop Invariant Derived loop invariant: ((main__y <= 50 && main__x <= 17) && 17 <= main__x) && 50 <= main__y - InvariantResult [Line: 307]: Loop Invariant Derived loop invariant: ((main__x <= 49 && main__y <= 50) && 49 <= main__x) && 50 <= main__y - InvariantResult [Line: 73]: Loop Invariant Derived loop invariant: ((main__y <= 50 && main__x <= 10) && 10 <= main__x) && 50 <= main__y - InvariantResult [Line: 265]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 42 <= main__x) && main__x <= 42) && 50 <= main__y - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: ((main__y <= 50 && main__x <= 3) && 3 <= main__x) && 50 <= main__y - InvariantResult [Line: 223]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 35 <= main__x) && main__x <= 35) && 50 <= main__y - InvariantResult [Line: 415]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((main__x <= 80 && main__y <= 80) && 80 <= main__x) && 80 <= main__y) || (((main__y <= 78 && 78 <= main__y) && 78 <= main__x) && main__x <= 78)) || (((main__y <= 81 && main__x <= 81) && 81 <= main__x) && 81 <= main__y)) || (((84 <= main__x && 84 <= main__y) && main__y <= 84) && main__x <= 84)) || (((90 <= main__x && main__y <= 90) && 90 <= main__y) && main__x <= 90)) || (((main__x <= 92 && main__y <= 92) && 92 <= main__x) && 92 <= main__y)) || (((main__y <= 75 && 75 <= main__x) && main__x <= 75) && 75 <= main__y)) || (((main__x <= 77 && 77 <= main__x) && main__y <= 77) && 77 <= main__y)) || (((main__y <= 71 && main__x <= 71) && 71 <= main__x) && 71 <= main__y)) || (((main__y <= 88 && main__x <= 88) && 88 <= main__y) && 88 <= main__x)) || (((main__y <= 91 && 91 <= main__x) && 91 <= main__y) && main__x <= 91)) || (((74 <= main__y && 74 <= main__x) && main__y <= 74) && main__x <= 74)) || (((69 <= main__y && main__x <= 69) && 69 <= main__x) && main__y <= 69)) || (((main__y <= 68 && 68 <= main__y) && 68 <= main__x) && main__x <= 68)) || (((87 <= main__x && main__x <= 87) && 87 <= main__y) && main__y <= 87)) || (((main__y <= 72 && 72 <= main__y) && 72 <= main__x) && main__x <= 72)) || (((main__y <= 79 && 79 <= main__x) && main__x <= 79) && 79 <= main__y)) || (((98 <= main__y && 98 <= main__x) && main__x <= 98) && main__y <= 98)) || (((main__x <= 89 && main__y <= 89) && 89 <= main__y) && 89 <= main__x)) || (((main__y <= 93 && main__x <= 93) && 93 <= main__x) && 93 <= main__y)) || (((main__y <= 99 && main__x <= 99) && 99 <= main__y) && 99 <= main__x)) || (((main__x <= 82 && 82 <= main__y) && 82 <= main__x) && main__y <= 82)) || (((85 <= main__x && main__x <= 85) && 85 <= main__y) && main__y <= 85)) || (((96 <= main__y && main__y <= 96) && 96 <= main__x) && main__x <= 96)) || (((95 <= main__x && main__y <= 95) && main__x <= 95) && 95 <= main__y)) || (((main__x <= 67 && main__y <= 67) && 67 <= main__y) && 67 <= main__x)) || (((70 <= main__y && main__y <= 70) && 70 <= main__x) && main__x <= 70)) || (((73 <= main__x && 73 <= main__y) && main__x <= 73) && main__y <= 73)) || (((main__y <= 83 && main__x <= 83) && 83 <= main__y) && 83 <= main__x)) || (((94 <= main__y && main__x <= 94) && 94 <= main__x) && main__y <= 94)) || ((100 <= main__x && 100 <= main__y) && main__y <= 100)) || (((main__y <= 76 && main__x <= 76) && 76 <= main__y) && 76 <= main__x)) || (((main__x <= 86 && 86 <= main__x) && main__y <= 86) && 86 <= main__y)) || (((97 <= main__x && main__x <= 97) && 97 <= main__y) && main__y <= 97) - InvariantResult [Line: 181]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 28 <= main__x) && main__x <= 28) && 50 <= main__y - InvariantResult [Line: 373]: Loop Invariant Derived loop invariant: ((main__y <= 60 && 60 <= main__x) && main__x <= 60) && 60 <= main__y - InvariantResult [Line: 91]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 13 <= main__x) && main__x <= 13) && 50 <= main__y - InvariantResult [Line: 283]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 45 <= main__x) && main__x <= 45) && 50 <= main__y - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 6 <= main__x) && main__x <= 6) && 50 <= main__y - InvariantResult [Line: 241]: Loop Invariant Derived loop invariant: ((main__y <= 50 && main__x <= 38) && 38 <= main__x) && 50 <= main__y - InvariantResult [Line: 199]: Loop Invariant Derived loop invariant: ((main__y <= 50 && main__x <= 31) && 31 <= main__x) && 50 <= main__y - InvariantResult [Line: 391]: Loop Invariant Derived loop invariant: ((63 <= main__x && 63 <= main__y) && main__x <= 63) && main__y <= 63 - InvariantResult [Line: 157]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 24 <= main__x) && 50 <= main__y) && main__x <= 24 - InvariantResult [Line: 349]: Loop Invariant Derived loop invariant: ((56 <= main__x && main__x <= 56) && 56 <= main__y) && main__y <= 56 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 145 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 282.4s, OverallIterations: 63, TraceHistogramMax: 34, AutomataDifference: 112.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4011 SDtfs, 6712 SDslu, 15303 SDs, 0 SdLazy, 210647 SolverSat, 6256 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9395 GetRequests, 5768 SyntacticMatches, 1 SemanticMatches, 3626 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5280 ImplicationChecksByTransitivity, 149.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=271occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 63 MinimizatonAttempts, 33 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 68 LocationsWithAnnotation, 68 PreInvPairs, 169 NumberOfFragments, 1299 HoareAnnotationTreeSize, 68 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 68 FomulaSimplificationsInter, 297 FormulaSimplificationTreeSizeReductionInter, 1.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 3.6s SatisfiabilityAnalysisTime, 155.3s InterpolantComputationTime, 15656 NumberOfCodeBlocks, 15656 NumberOfCodeBlocksAsserted, 390 NumberOfCheckSat, 15560 ConstructedInterpolants, 0 QuantifiedInterpolants, 7259476 SizeOfPredicates, 35 NumberOfNonLiveVariables, 14883 ConjunctsInSsa, 2841 ConjunctsInUnsatCore, 96 InterpolantComputations, 30 PerfectInterpolantSequences, 1156/26214 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...