/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_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:40:17,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:40:17,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:40:17,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:40:17,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:40:17,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:40:17,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:40:17,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:40:17,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:40:17,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:40:17,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:40:17,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:40:17,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:40:17,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:40:17,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:40:17,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:40:17,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:40:17,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:40:17,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:40:17,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:40:17,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:40:17,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:40:17,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:40:17,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:40:17,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:40:17,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:40:17,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:40:17,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:40:17,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:40:17,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:40:17,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:40:17,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:40:17,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:40:17,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:40:17,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:40:17,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:40:17,454 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 22:40:17,473 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:40:17,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:40:17,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:40:17,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:40:17,475 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:40:17,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:40:17,475 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:40:17,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:40:17,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:40:17,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:40:17,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:40:17,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:40:17,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:40:17,477 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:40:17,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:40:17,477 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:40:17,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:40:17,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:40:17,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:40:17,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:40:17,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:40:17,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:40:17,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:40:17,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:40:17,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:40:17,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:40:17,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:40:17,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:40:17,480 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 22:40:17,767 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:40:17,788 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:40:17,791 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:40:17,793 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:40:17,794 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:40:17,796 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label30.c [2019-11-06 22:40:17,870 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ae76a00b/709018b8449b42858b8e3507b4fddc91/FLAG96b5cf625 [2019-11-06 22:40:18,687 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:40:18,688 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label30.c [2019-11-06 22:40:18,725 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ae76a00b/709018b8449b42858b8e3507b4fddc91/FLAG96b5cf625 [2019-11-06 22:40:19,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ae76a00b/709018b8449b42858b8e3507b4fddc91 [2019-11-06 22:40:19,204 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:40:19,206 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:40:19,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:40:19,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:40:19,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:40:19,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:40:19" (1/1) ... [2019-11-06 22:40:19,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c8c75d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:19, skipping insertion in model container [2019-11-06 22:40:19,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:40:19" (1/1) ... [2019-11-06 22:40:19,222 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:40:19,384 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:40:20,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:40:20,758 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:40:21,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:40:21,549 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:40:21,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:21 WrapperNode [2019-11-06 22:40:21,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:40:21,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:40:21,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:40:21,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:40:21,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:21" (1/1) ... [2019-11-06 22:40:21,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:21" (1/1) ... [2019-11-06 22:40:21,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:21" (1/1) ... [2019-11-06 22:40:21,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:21" (1/1) ... [2019-11-06 22:40:21,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:21" (1/1) ... [2019-11-06 22:40:21,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:21" (1/1) ... [2019-11-06 22:40:21,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:21" (1/1) ... [2019-11-06 22:40:21,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:40:21,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:40:21,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:40:21,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:40:21,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:21" (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 22:40:21,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:40:21,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:40:21,882 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:40:21,882 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 22:40:21,882 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 22:40:21,882 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-06 22:40:21,882 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:40:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:40:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 22:40:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 22:40:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-06 22:40:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:40:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:40:21,884 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:40:21,884 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:40:21,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:40:21,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:40:26,592 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:40:26,592 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:40:26,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:26 BoogieIcfgContainer [2019-11-06 22:40:26,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:40:26,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:40:26,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:40:26,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:40:26,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:40:19" (1/3) ... [2019-11-06 22:40:26,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124ceee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:40:26, skipping insertion in model container [2019-11-06 22:40:26,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:21" (2/3) ... [2019-11-06 22:40:26,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124ceee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:40:26, skipping insertion in model container [2019-11-06 22:40:26,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:26" (3/3) ... [2019-11-06 22:40:26,612 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label30.c [2019-11-06 22:40:26,628 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:40:26,642 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:40:26,656 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:40:26,710 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:40:26,710 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:40:26,710 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:40:26,710 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:40:26,711 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:40:26,711 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:40:26,711 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:40:26,711 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:40:26,756 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-11-06 22:40:26,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2019-11-06 22:40:26,815 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:40:26,818 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] [2019-11-06 22:40:26,820 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:40:26,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:40:26,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1605596670, now seen corresponding path program 1 times [2019-11-06 22:40:26,839 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:40:26,840 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133878110] [2019-11-06 22:40:26,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:40:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:40:28,752 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 22:40:28,753 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133878110] [2019-11-06 22:40:28,754 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:40:28,754 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:40:28,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937173845] [2019-11-06 22:40:28,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:40:28,764 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:40:28,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:40:28,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:40:28,781 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 3 states. [2019-11-06 22:40:34,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:40:34,070 INFO L93 Difference]: Finished difference Result 2644 states and 5099 transitions. [2019-11-06 22:40:34,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:40:34,077 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 793 [2019-11-06 22:40:34,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:40:34,148 INFO L225 Difference]: With dead ends: 2644 [2019-11-06 22:40:34,148 INFO L226 Difference]: Without dead ends: 1676 [2019-11-06 22:40:34,161 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 22:40:34,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2019-11-06 22:40:34,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1676. [2019-11-06 22:40:34,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1676 states. [2019-11-06 22:40:34,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2956 transitions. [2019-11-06 22:40:34,332 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2956 transitions. Word has length 793 [2019-11-06 22:40:34,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:40:34,336 INFO L462 AbstractCegarLoop]: Abstraction has 1676 states and 2956 transitions. [2019-11-06 22:40:34,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:40:34,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2956 transitions. [2019-11-06 22:40:34,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2019-11-06 22:40:34,371 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:40:34,372 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] [2019-11-06 22:40:34,372 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:40:34,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:40:34,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1787289399, now seen corresponding path program 1 times [2019-11-06 22:40:34,373 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:40:34,374 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373343766] [2019-11-06 22:40:34,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:40:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:40:35,511 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 22:40:35,512 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373343766] [2019-11-06 22:40:35,512 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:40:35,513 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:40:35,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535436224] [2019-11-06 22:40:35,517 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:40:35,518 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:40:35,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:40:35,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:40:35,519 INFO L87 Difference]: Start difference. First operand 1676 states and 2956 transitions. Second operand 6 states. [2019-11-06 22:40:42,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:40:42,189 INFO L93 Difference]: Finished difference Result 5104 states and 9045 transitions. [2019-11-06 22:40:42,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:40:42,189 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 851 [2019-11-06 22:40:42,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:40:42,218 INFO L225 Difference]: With dead ends: 5104 [2019-11-06 22:40:42,218 INFO L226 Difference]: Without dead ends: 3434 [2019-11-06 22:40:42,224 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 22:40:42,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2019-11-06 22:40:42,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3404. [2019-11-06 22:40:42,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3404 states. [2019-11-06 22:40:42,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 5691 transitions. [2019-11-06 22:40:42,345 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 5691 transitions. Word has length 851 [2019-11-06 22:40:42,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:40:42,345 INFO L462 AbstractCegarLoop]: Abstraction has 3404 states and 5691 transitions. [2019-11-06 22:40:42,346 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:40:42,346 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 5691 transitions. [2019-11-06 22:40:42,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2019-11-06 22:40:42,361 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:40:42,362 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] [2019-11-06 22:40:42,363 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:40:42,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:40:42,363 INFO L82 PathProgramCache]: Analyzing trace with hash 2139909256, now seen corresponding path program 1 times [2019-11-06 22:40:42,364 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:40:42,364 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585293642] [2019-11-06 22:40:42,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:40:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:40:43,396 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 22:40:43,396 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585293642] [2019-11-06 22:40:43,396 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394203843] [2019-11-06 22:40:43,397 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 22:40:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:40:43,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 1240 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:40:43,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:40:44,493 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 22:40:44,496 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:40:45,079 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 22:40:45,079 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [506280184] [2019-11-06 22:40:45,085 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 860 [2019-11-06 22:40:45,188 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:40:45,188 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)