/usr/bin/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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:39:58,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:39:58,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:39:58,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:39:58,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:39:58,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:39:58,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:39:58,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:39:58,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:39:58,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:39:58,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:39:58,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:39:58,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:39:58,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:39:58,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:39:58,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:39:58,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:39:58,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:39:58,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:39:58,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:39:58,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:39:58,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:39:58,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:39:58,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:39:58,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:39:58,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:39:58,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:39:58,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:39:58,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:39:58,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:39:58,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:39:58,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:39:58,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:39:58,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:39:58,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:39:58,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:39:58,685 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 [2019-11-06 22:39:58,701 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:39:58,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:39:58,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:39:58,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:39:58,703 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:39:58,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:39:58,704 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:39:58,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:39:58,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:39:58,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:39:58,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:39:58,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:39:58,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:39:58,705 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:39:58,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:39:58,705 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:39:58,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:39:58,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:39:58,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:39:58,706 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:39:58,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:39:58,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:39:58,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:39:58,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:39:58,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:39:58,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:39:58,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:39:58,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:39:58,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-06 22:39:59,060 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:39:59,075 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:39:59,079 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:39:59,081 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:39:59,081 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:39:59,081 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label25.c [2019-11-06 22:39:59,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42ce82068/8e088b631d964a64a5c50a4fb64a68e2/FLAG405324920 [2019-11-06 22:39:59,952 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:39:59,952 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label25.c [2019-11-06 22:39:59,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42ce82068/8e088b631d964a64a5c50a4fb64a68e2/FLAG405324920 [2019-11-06 22:40:00,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42ce82068/8e088b631d964a64a5c50a4fb64a68e2 [2019-11-06 22:40:00,492 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:40:00,493 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:40:00,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:40:00,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:40:00,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:40:00,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:40:00" (1/1) ... [2019-11-06 22:40:00,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b7df685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:00, skipping insertion in model container [2019-11-06 22:40:00,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:40:00" (1/1) ... [2019-11-06 22:40:00,511 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:40:00,652 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:40:02,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:40:02,403 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:40:02,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:40:02,998 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:40:02,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:02 WrapperNode [2019-11-06 22:40:02,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:40:03,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:40:03,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:40:03,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:40:03,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:02" (1/1) ... [2019-11-06 22:40:03,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:02" (1/1) ... [2019-11-06 22:40:03,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:02" (1/1) ... [2019-11-06 22:40:03,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:02" (1/1) ... [2019-11-06 22:40:03,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:02" (1/1) ... [2019-11-06 22:40:03,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:02" (1/1) ... [2019-11-06 22:40:03,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:02" (1/1) ... [2019-11-06 22:40:03,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:40:03,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:40:03,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:40:03,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:40:03,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:02" (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 [2019-11-06 22:40:03,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:40:03,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:40:03,337 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:40:03,337 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 22:40:03,337 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 22:40:03,338 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-06 22:40:03,338 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:40:03,338 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:40:03,338 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 22:40:03,339 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 22:40:03,339 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-06 22:40:03,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:40:03,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:40:03,339 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:40:03,340 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:40:03,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:40:03,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:40:07,825 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:40:07,825 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:40:07,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:07 BoogieIcfgContainer [2019-11-06 22:40:07,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:40:07,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:40:07,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:40:07,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:40:07,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:40:00" (1/3) ... [2019-11-06 22:40:07,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5bf334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:40:07, skipping insertion in model container [2019-11-06 22:40:07,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:02" (2/3) ... [2019-11-06 22:40:07,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5bf334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:40:07, skipping insertion in model container [2019-11-06 22:40:07,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:07" (3/3) ... [2019-11-06 22:40:07,836 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label25.c [2019-11-06 22:40:07,847 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:40:07,858 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:40:07,869 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:40:07,912 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:40:07,912 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:40:07,913 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:40:07,913 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:40:07,913 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:40:07,913 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:40:07,913 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:40:07,913 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:40:07,957 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-11-06 22:40:08,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2019-11-06 22:40:08,014 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:40:08,016 INFO L410 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] [2019-11-06 22:40:08,018 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:40:08,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:40:08,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1063936834, now seen corresponding path program 1 times [2019-11-06 22:40:08,034 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:40:08,034 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904560184] [2019-11-06 22:40:08,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:40:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:40:09,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:40:09,933 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904560184] [2019-11-06 22:40:09,934 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:40:09,934 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:40:09,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677253542] [2019-11-06 22:40:09,943 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:40:09,947 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:40:09,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:40:09,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:40:09,966 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 3 states. [2019-11-06 22:40:15,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:40:15,059 INFO L93 Difference]: Finished difference Result 2644 states and 5099 transitions. [2019-11-06 22:40:15,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:40:15,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 809 [2019-11-06 22:40:15,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:40:15,133 INFO L225 Difference]: With dead ends: 2644 [2019-11-06 22:40:15,133 INFO L226 Difference]: Without dead ends: 1676 [2019-11-06 22:40:15,153 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:40:15,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2019-11-06 22:40:15,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1676. [2019-11-06 22:40:15,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1676 states. [2019-11-06 22:40:15,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2956 transitions. [2019-11-06 22:40:15,325 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2956 transitions. Word has length 809 [2019-11-06 22:40:15,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:40:15,329 INFO L462 AbstractCegarLoop]: Abstraction has 1676 states and 2956 transitions. [2019-11-06 22:40:15,330 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:40:15,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2956 transitions. [2019-11-06 22:40:15,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 868 [2019-11-06 22:40:15,364 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:40:15,365 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 22:40:15,366 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:40:15,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:40:15,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1300672119, now seen corresponding path program 1 times [2019-11-06 22:40:15,367 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:40:15,367 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569104096] [2019-11-06 22:40:15,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:40:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:40:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:40:16,399 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569104096] [2019-11-06 22:40:16,399 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:40:16,400 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:40:16,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062028198] [2019-11-06 22:40:16,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:40:16,403 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:40:16,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:40:16,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:40:16,404 INFO L87 Difference]: Start difference. First operand 1676 states and 2956 transitions. Second operand 6 states. [2019-11-06 22:40:22,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:40:22,572 INFO L93 Difference]: Finished difference Result 5104 states and 9045 transitions. [2019-11-06 22:40:22,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:40:22,573 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 867 [2019-11-06 22:40:22,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:40:22,597 INFO L225 Difference]: With dead ends: 5104 [2019-11-06 22:40:22,597 INFO L226 Difference]: Without dead ends: 3434 [2019-11-06 22:40:22,602 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:40:22,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2019-11-06 22:40:22,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3404. [2019-11-06 22:40:22,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3404 states. [2019-11-06 22:40:22,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 5691 transitions. [2019-11-06 22:40:22,741 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 5691 transitions. Word has length 867 [2019-11-06 22:40:22,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:40:22,742 INFO L462 AbstractCegarLoop]: Abstraction has 3404 states and 5691 transitions. [2019-11-06 22:40:22,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:40:22,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 5691 transitions. [2019-11-06 22:40:22,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2019-11-06 22:40:22,774 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:40:22,775 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:40:22,776 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:40:22,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:40:22,778 INFO L82 PathProgramCache]: Analyzing trace with hash -275744312, now seen corresponding path program 1 times [2019-11-06 22:40:22,778 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:40:22,778 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539889342] [2019-11-06 22:40:22,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:40:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:40:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:40:23,931 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539889342] [2019-11-06 22:40:23,931 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938285344] [2019-11-06 22:40:23,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-06 22:40:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:40:24,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:40:24,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:40:24,920 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:40:24,921 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:40:25,455 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:40:25,455 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1301923200] [2019-11-06 22:40:25,465 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 876 [2019-11-06 22:40:25,577 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:40:25,577 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)