java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 15:12:37,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 15:12:37,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 15:12:37,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 15:12:37,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 15:12:37,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 15:12:37,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 15:12:37,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 15:12:37,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 15:12:37,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 15:12:37,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 15:12:37,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 15:12:37,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 15:12:37,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 15:12:37,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 15:12:37,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 15:12:37,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 15:12:37,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 15:12:37,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 15:12:37,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 15:12:37,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 15:12:37,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 15:12:37,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 15:12:37,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 15:12:37,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 15:12:37,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 15:12:37,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 15:12:37,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 15:12:37,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 15:12:37,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 15:12:37,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 15:12:37,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 15:12:37,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 15:12:37,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 15:12:37,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 15:12:37,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 15:12:37,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 15:12:37,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 15:12:37,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 15:12:37,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 15:12:37,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 15:12:37,559 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-07 15:12:37,584 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 15:12:37,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 15:12:37,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 15:12:37,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 15:12:37,587 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 15:12:37,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 15:12:37,587 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 15:12:37,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 15:12:37,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 15:12:37,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 15:12:37,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 15:12:37,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 15:12:37,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 15:12:37,590 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 15:12:37,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 15:12:37,590 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 15:12:37,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 15:12:37,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 15:12:37,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 15:12:37,591 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 15:12:37,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 15:12:37,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 15:12:37,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 15:12:37,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 15:12:37,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 15:12:37,592 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 15:12:37,593 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 15:12:37,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 15:12:37,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 15:12:37,625 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 15:12:37,638 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 15:12:37,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 15:12:37,643 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 15:12:37,643 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 15:12:37,644 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label21.c [2019-09-07 15:12:37,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64c206a63/554cc87789a747fd8916dd672a42bf66/FLAGcfdb567b8 [2019-09-07 15:12:38,618 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 15:12:38,621 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem06_label21.c [2019-09-07 15:12:38,695 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64c206a63/554cc87789a747fd8916dd672a42bf66/FLAGcfdb567b8 [2019-09-07 15:12:39,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64c206a63/554cc87789a747fd8916dd672a42bf66 [2019-09-07 15:12:39,024 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 15:12:39,026 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 15:12:39,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 15:12:39,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 15:12:39,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 15:12:39,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 03:12:39" (1/1) ... [2019-09-07 15:12:39,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21bb581f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:12:39, skipping insertion in model container [2019-09-07 15:12:39,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 03:12:39" (1/1) ... [2019-09-07 15:12:39,043 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 15:12:39,259 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 15:12:41,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 15:12:41,556 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 15:12:42,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 15:12:42,813 INFO L192 MainTranslator]: Completed translation [2019-09-07 15:12:42,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:12:42 WrapperNode [2019-09-07 15:12:42,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 15:12:42,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 15:12:42,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 15:12:42,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 15:12:42,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:12:42" (1/1) ... [2019-09-07 15:12:42,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:12:42" (1/1) ... [2019-09-07 15:12:42,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:12:42" (1/1) ... [2019-09-07 15:12:42,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:12:42" (1/1) ... [2019-09-07 15:12:43,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:12:42" (1/1) ... [2019-09-07 15:12:43,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:12:42" (1/1) ... [2019-09-07 15:12:43,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:12:42" (1/1) ... [2019-09-07 15:12:43,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 15:12:43,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 15:12:43,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 15:12:43,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 15:12:43,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:12:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-09-07 15:12:43,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 15:12:43,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 15:12:43,290 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 15:12:43,290 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 15:12:43,290 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 15:12:43,291 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 15:12:43,291 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-07 15:12:43,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 15:12:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 15:12:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 15:12:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 15:12:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 15:12:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-07 15:12:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 15:12:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 15:12:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 15:12:43,296 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 15:12:43,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 15:12:43,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 15:12:50,367 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 15:12:50,367 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 15:12:50,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 03:12:50 BoogieIcfgContainer [2019-09-07 15:12:50,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 15:12:50,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 15:12:50,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 15:12:50,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 15:12:50,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 03:12:39" (1/3) ... [2019-09-07 15:12:50,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7322bd54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 03:12:50, skipping insertion in model container [2019-09-07 15:12:50,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:12:42" (2/3) ... [2019-09-07 15:12:50,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7322bd54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 03:12:50, skipping insertion in model container [2019-09-07 15:12:50,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 03:12:50" (3/3) ... [2019-09-07 15:12:50,376 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label21.c [2019-09-07 15:12:50,385 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 15:12:50,393 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 15:12:50,410 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 15:12:50,450 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 15:12:50,451 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 15:12:50,451 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 15:12:50,451 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 15:12:50,451 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 15:12:50,451 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 15:12:50,451 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 15:12:50,452 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 15:12:50,452 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 15:12:50,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2019-09-07 15:12:50,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 946 [2019-09-07 15:12:50,542 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:12:50,544 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 15:12:50,546 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:12:50,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:12:50,553 INFO L82 PathProgramCache]: Analyzing trace with hash -255361808, now seen corresponding path program 1 times [2019-09-07 15:12:50,554 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:12:50,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:12:50,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:12:50,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:12:50,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:12:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:12:53,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 15:12:53,417 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 15:12:53,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 15:12:53,425 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 15:12:53,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 15:12:53,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 15:12:53,443 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 3 states. [2019-09-07 15:13:00,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:13:00,131 INFO L93 Difference]: Finished difference Result 3744 states and 6993 transitions. [2019-09-07 15:13:00,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 15:13:00,136 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 945 [2019-09-07 15:13:00,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:13:00,194 INFO L225 Difference]: With dead ends: 3744 [2019-09-07 15:13:00,194 INFO L226 Difference]: Without dead ends: 2367 [2019-09-07 15:13:00,212 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 15:13:00,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2019-09-07 15:13:00,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2345. [2019-09-07 15:13:00,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2345 states. [2019-09-07 15:13:00,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 4101 transitions. [2019-09-07 15:13:00,399 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 4101 transitions. Word has length 945 [2019-09-07 15:13:00,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:13:00,402 INFO L475 AbstractCegarLoop]: Abstraction has 2345 states and 4101 transitions. [2019-09-07 15:13:00,403 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 15:13:00,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 4101 transitions. [2019-09-07 15:13:00,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 954 [2019-09-07 15:13:00,451 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:13:00,452 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 15:13:00,453 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:13:00,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:13:00,454 INFO L82 PathProgramCache]: Analyzing trace with hash -889989339, now seen corresponding path program 1 times [2019-09-07 15:13:00,454 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:13:00,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:13:00,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:13:00,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:13:00,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:13:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:13:01,150 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 15:13:01,151 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 15:13:01,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 15:13:01,154 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 15:13:01,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 15:13:01,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 15:13:01,155 INFO L87 Difference]: Start difference. First operand 2345 states and 4101 transitions. Second operand 5 states. [2019-09-07 15:13:09,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:13:09,589 INFO L93 Difference]: Finished difference Result 6897 states and 12205 transitions. [2019-09-07 15:13:09,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 15:13:09,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 953 [2019-09-07 15:13:09,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:13:09,646 INFO L225 Difference]: With dead ends: 6897 [2019-09-07 15:13:09,647 INFO L226 Difference]: Without dead ends: 4558 [2019-09-07 15:13:09,656 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 15:13:09,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4558 states. [2019-09-07 15:13:09,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4558 to 4465. [2019-09-07 15:13:09,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4465 states. [2019-09-07 15:13:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4465 states to 4465 states and 7429 transitions. [2019-09-07 15:13:09,836 INFO L78 Accepts]: Start accepts. Automaton has 4465 states and 7429 transitions. Word has length 953 [2019-09-07 15:13:09,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:13:09,837 INFO L475 AbstractCegarLoop]: Abstraction has 4465 states and 7429 transitions. [2019-09-07 15:13:09,837 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 15:13:09,837 INFO L276 IsEmpty]: Start isEmpty. Operand 4465 states and 7429 transitions. [2019-09-07 15:13:09,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2019-09-07 15:13:09,859 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:13:09,860 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 15:13:09,860 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:13:09,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:13:09,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1726027167, now seen corresponding path program 1 times [2019-09-07 15:13:09,861 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:13:09,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:13:09,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:13:09,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:13:09,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:13:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:13:11,607 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 15:13:11,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 15:13:11,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 15:13:11,609 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 15:13:11,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 15:13:11,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 15:13:11,610 INFO L87 Difference]: Start difference. First operand 4465 states and 7429 transitions. Second operand 3 states. [2019-09-07 15:13:17,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:13:17,468 INFO L93 Difference]: Finished difference Result 13092 states and 22203 transitions. [2019-09-07 15:13:17,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 15:13:17,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 958 [2019-09-07 15:13:17,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:13:17,524 INFO L225 Difference]: With dead ends: 13092 [2019-09-07 15:13:17,525 INFO L226 Difference]: Without dead ends: 8633 [2019-09-07 15:13:17,539 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 15:13:17,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8633 states. [2019-09-07 15:13:17,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8633 to 8616. [2019-09-07 15:13:17,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8616 states. [2019-09-07 15:13:17,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8616 states to 8616 states and 13636 transitions. [2019-09-07 15:13:17,748 INFO L78 Accepts]: Start accepts. Automaton has 8616 states and 13636 transitions. Word has length 958 [2019-09-07 15:13:17,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:13:17,750 INFO L475 AbstractCegarLoop]: Abstraction has 8616 states and 13636 transitions. [2019-09-07 15:13:17,750 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 15:13:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 8616 states and 13636 transitions. [2019-09-07 15:13:17,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2019-09-07 15:13:17,793 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:13:17,794 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 15:13:17,795 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:13:17,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:13:17,796 INFO L82 PathProgramCache]: Analyzing trace with hash -130067742, now seen corresponding path program 1 times [2019-09-07 15:13:17,796 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:13:17,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:13:17,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:13:17,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:13:17,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:13:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:13:18,807 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 15:13:18,808 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 15:13:18,808 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 15:13:18,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:13:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:13:19,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 2296 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 15:13:19,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 15:13:20,487 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 15:13:20,502 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 15:13:20,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2019-09-07 15:13:20,507 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 15:13:20,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 15:13:20,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-09-07 15:13:20,508 INFO L87 Difference]: Start difference. First operand 8616 states and 13636 transitions. Second operand 12 states. [2019-09-07 15:14:02,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:14:02,480 INFO L93 Difference]: Finished difference Result 85526 states and 167488 transitions. [2019-09-07 15:14:02,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-09-07 15:14:02,486 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 965 [2019-09-07 15:14:02,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:14:03,095 INFO L225 Difference]: With dead ends: 85526 [2019-09-07 15:14:03,098 INFO L226 Difference]: Without dead ends: 76916 [2019-09-07 15:14:03,207 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1054 GetRequests, 1003 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=545, Invalid=2211, Unknown=0, NotChecked=0, Total=2756 [2019-09-07 15:14:03,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76916 states. [2019-09-07 15:14:07,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76916 to 76590. [2019-09-07 15:14:07,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76590 states. [2019-09-07 15:14:07,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76590 states to 76590 states and 133573 transitions. [2019-09-07 15:14:07,891 INFO L78 Accepts]: Start accepts. Automaton has 76590 states and 133573 transitions. Word has length 965 [2019-09-07 15:14:07,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:14:07,892 INFO L475 AbstractCegarLoop]: Abstraction has 76590 states and 133573 transitions. [2019-09-07 15:14:07,892 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 15:14:07,892 INFO L276 IsEmpty]: Start isEmpty. Operand 76590 states and 133573 transitions. [2019-09-07 15:14:08,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2019-09-07 15:14:08,301 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:14:08,302 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 15:14:08,302 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:14:08,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:14:08,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1048735912, now seen corresponding path program 1 times [2019-09-07 15:14:08,304 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:14:08,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:14:08,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:14:08,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:14:08,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:14:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:14:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 15:14:12,364 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 15:14:12,365 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 15:14:12,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 15:14:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:14:12,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 2286 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 15:14:12,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 15:14:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-07 15:14:13,543 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 15:14:13,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-09-07 15:14:13,546 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 15:14:13,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 15:14:13,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 15:14:13,547 INFO L87 Difference]: Start difference. First operand 76590 states and 133573 transitions. Second operand 6 states. [2019-09-07 15:14:25,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:14:25,229 INFO L93 Difference]: Finished difference Result 192076 states and 357720 transitions. [2019-09-07 15:14:25,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 15:14:25,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 983 [2019-09-07 15:14:25,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:14:26,034 INFO L225 Difference]: With dead ends: 192076 [2019-09-07 15:14:26,034 INFO L226 Difference]: Without dead ends: 115492 [2019-09-07 15:14:26,367 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 997 GetRequests, 991 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-09-07 15:14:26,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115492 states. [2019-09-07 15:14:29,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115492 to 115172. [2019-09-07 15:14:29,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115172 states. [2019-09-07 15:14:30,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115172 states to 115172 states and 205270 transitions. [2019-09-07 15:14:30,577 INFO L78 Accepts]: Start accepts. Automaton has 115172 states and 205270 transitions. Word has length 983 [2019-09-07 15:14:30,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:14:30,579 INFO L475 AbstractCegarLoop]: Abstraction has 115172 states and 205270 transitions. [2019-09-07 15:14:30,580 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 15:14:30,580 INFO L276 IsEmpty]: Start isEmpty. Operand 115172 states and 205270 transitions. [2019-09-07 15:14:31,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1022 [2019-09-07 15:14:31,172 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:14:31,173 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 15:14:31,174 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:14:31,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:14:31,174 INFO L82 PathProgramCache]: Analyzing trace with hash -397304728, now seen corresponding path program 1 times [2019-09-07 15:14:31,175 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:14:31,175 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:14:31,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:14:31,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:14:31,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:14:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:14:35,146 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 96 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-07 15:14:35,146 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 15:14:35,146 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 15:14:35,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:14:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:14:35,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 15:14:35,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 15:14:36,443 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-09-07 15:14:36,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 15:14:36,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 15:14:36,451 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 15:14:36,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 15:14:36,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 15:14:36,452 INFO L87 Difference]: Start difference. First operand 115172 states and 205270 transitions. Second operand 9 states. [2019-09-07 15:14:58,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:14:58,473 INFO L93 Difference]: Finished difference Result 376954 states and 808057 transitions. [2019-09-07 15:14:58,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-09-07 15:14:58,473 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1021 [2019-09-07 15:14:58,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:15:00,314 INFO L225 Difference]: With dead ends: 376954 [2019-09-07 15:15:00,314 INFO L226 Difference]: Without dead ends: 261834 [2019-09-07 15:15:00,772 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1072 GetRequests, 1042 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=782, Unknown=0, NotChecked=0, Total=992 [2019-09-07 15:15:01,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261834 states. [2019-09-07 15:15:12,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261834 to 258656. [2019-09-07 15:15:12,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258656 states. [2019-09-07 15:15:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258656 states to 258656 states and 445427 transitions. [2019-09-07 15:15:13,112 INFO L78 Accepts]: Start accepts. Automaton has 258656 states and 445427 transitions. Word has length 1021 [2019-09-07 15:15:13,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:15:13,113 INFO L475 AbstractCegarLoop]: Abstraction has 258656 states and 445427 transitions. [2019-09-07 15:15:13,113 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 15:15:13,113 INFO L276 IsEmpty]: Start isEmpty. Operand 258656 states and 445427 transitions. [2019-09-07 15:15:19,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1045 [2019-09-07 15:15:19,593 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:15:19,594 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 15:15:19,594 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:15:19,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:15:19,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1531865079, now seen corresponding path program 1 times [2019-09-07 15:15:19,595 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:15:19,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:15:19,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:15:19,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:15:19,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:15:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:15:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 102 proven. 35 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-07 15:15:20,919 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 15:15:20,919 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 15:15:20,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:15:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:15:21,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 2534 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 15:15:21,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 15:15:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Stream closed [2019-09-07 15:15:22,507 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 15:15:22,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 15:15:22,509 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 15:15:22,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 15:15:22,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 15:15:22,510 INFO L87 Difference]: Start difference. First operand 258656 states and 445427 transitions. Second operand 9 states. [2019-09-07 15:15:59,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:15:59,239 INFO L93 Difference]: Finished difference Result 938646 states and 1974649 transitions. [2019-09-07 15:15:59,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-09-07 15:15:59,239 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1044 [2019-09-07 15:15:59,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:16:03,056 INFO L225 Difference]: With dead ends: 938646 [2019-09-07 15:16:03,057 INFO L226 Difference]: Without dead ends: 679996 [2019-09-07 15:16:04,514 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1111 GetRequests, 1073 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=330, Invalid=1230, Unknown=0, NotChecked=0, Total=1560 [2019-09-07 15:16:04,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679996 states. [2019-09-07 15:16:36,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679996 to 674835. [2019-09-07 15:16:36,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674835 states. [2019-09-07 15:16:51,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674835 states to 674835 states and 1174776 transitions. [2019-09-07 15:16:51,363 INFO L78 Accepts]: Start accepts. Automaton has 674835 states and 1174776 transitions. Word has length 1044 [2019-09-07 15:16:51,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:16:51,364 INFO L475 AbstractCegarLoop]: Abstraction has 674835 states and 1174776 transitions. [2019-09-07 15:16:51,364 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 15:16:51,364 INFO L276 IsEmpty]: Start isEmpty. Operand 674835 states and 1174776 transitions. [2019-09-07 15:17:03,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1098 [2019-09-07 15:17:03,798 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:17:03,799 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 15:17:03,799 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:17:03,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:17:03,800 INFO L82 PathProgramCache]: Analyzing trace with hash 81389574, now seen corresponding path program 1 times [2019-09-07 15:17:03,800 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:17:03,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:17:03,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:17:03,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:17:03,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:17:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:17:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 125 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 15:17:07,663 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 15:17:07,663 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 15:17:07,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:17:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:17:08,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 2399 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 15:17:08,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 15:17:13,986 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-09-07 15:17:13,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 15:17:13,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2019-09-07 15:17:13,995 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 15:17:13,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 15:17:13,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-07 15:17:13,996 INFO L87 Difference]: Start difference. First operand 674835 states and 1174776 transitions. Second operand 8 states.