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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 09:22:09,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 09:22:09,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 09:22:09,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 09:22:09,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 09:22:09,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 09:22:09,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 09:22:09,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 09:22:09,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 09:22:09,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 09:22:09,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 09:22:09,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 09:22:09,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 09:22:09,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 09:22:09,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 09:22:09,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 09:22:09,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 09:22:09,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 09:22:09,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 09:22:09,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 09:22:09,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 09:22:09,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 09:22:09,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 09:22:09,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 09:22:09,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 09:22:09,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 09:22:09,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 09:22:09,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 09:22:09,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 09:22:09,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 09:22:09,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 09:22:09,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 09:22:09,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 09:22:09,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 09:22:09,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 09:22:09,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 09:22:09,178 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 09:22:09,206 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 09:22:09,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 09:22:09,206 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 09:22:09,207 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 09:22:09,207 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 09:22:09,208 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 09:22:09,208 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 09:22:09,208 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 09:22:09,209 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 09:22:09,209 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 09:22:09,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 09:22:09,211 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 09:22:09,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 09:22:09,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 09:22:09,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 09:22:09,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 09:22:09,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 09:22:09,213 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 09:22:09,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 09:22:09,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 09:22:09,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 09:22:09,214 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 09:22:09,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 09:22:09,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 09:22:09,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 09:22:09,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 09:22:09,215 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 09:22:09,215 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 09:22:09,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 09:22:09,216 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 09:22:09,272 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 09:22:09,291 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 09:22:09,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 09:22:09,296 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 09:22:09,296 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 09:22:09,298 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label06.c [2019-09-09 09:22:09,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45d0b3eee/5e02cb80e52a47b792e29c2c0d57fb3b/FLAG2ed1ae70a [2019-09-09 09:22:10,333 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 09:22:10,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label06.c [2019-09-09 09:22:10,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45d0b3eee/5e02cb80e52a47b792e29c2c0d57fb3b/FLAG2ed1ae70a [2019-09-09 09:22:10,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45d0b3eee/5e02cb80e52a47b792e29c2c0d57fb3b [2019-09-09 09:22:10,720 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 09:22:10,722 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 09:22:10,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 09:22:10,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 09:22:10,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 09:22:10,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 09:22:10" (1/1) ... [2019-09-09 09:22:10,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4514680f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:10, skipping insertion in model container [2019-09-09 09:22:10,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 09:22:10" (1/1) ... [2019-09-09 09:22:10,738 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 09:22:10,984 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 09:22:13,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 09:22:13,639 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 09:22:14,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 09:22:15,030 INFO L192 MainTranslator]: Completed translation [2019-09-09 09:22:15,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:15 WrapperNode [2019-09-09 09:22:15,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 09:22:15,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 09:22:15,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 09:22:15,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 09:22:15,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:15" (1/1) ... [2019-09-09 09:22:15,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:15" (1/1) ... [2019-09-09 09:22:15,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:15" (1/1) ... [2019-09-09 09:22:15,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:15" (1/1) ... [2019-09-09 09:22:15,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:15" (1/1) ... [2019-09-09 09:22:15,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:15" (1/1) ... [2019-09-09 09:22:15,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:15" (1/1) ... [2019-09-09 09:22:15,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 09:22:15,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 09:22:15,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 09:22:15,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 09:22:15,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:15" (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 [2019-09-09 09:22:15,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 09:22:15,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 09:22:15,574 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 09:22:15,574 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 09:22:15,574 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 09:22:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 09:22:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-09 09:22:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-09 09:22:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2019-09-09 09:22:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2019-09-09 09:22:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 09:22:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 09:22:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 09:22:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 09:22:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 09:22:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-09 09:22:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-09 09:22:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2019-09-09 09:22:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2019-09-09 09:22:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 09:22:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 09:22:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 09:22:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 09:22:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 09:22:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 09:22:23,822 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 09:22:23,822 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 09:22:23,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 09:22:23 BoogieIcfgContainer [2019-09-09 09:22:23,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 09:22:23,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 09:22:23,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 09:22:23,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 09:22:23,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 09:22:10" (1/3) ... [2019-09-09 09:22:23,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b945db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 09:22:23, skipping insertion in model container [2019-09-09 09:22:23,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:15" (2/3) ... [2019-09-09 09:22:23,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b945db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 09:22:23, skipping insertion in model container [2019-09-09 09:22:23,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 09:22:23" (3/3) ... [2019-09-09 09:22:23,836 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label06.c [2019-09-09 09:22:23,846 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 09:22:23,856 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 09:22:23,872 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 09:22:23,896 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 09:22:23,897 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 09:22:23,897 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 09:22:23,897 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 09:22:23,897 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 09:22:23,897 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 09:22:23,898 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 09:22:23,898 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 09:22:23,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2019-09-09 09:22:24,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1691 [2019-09-09 09:22:24,114 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 09:22:24,117 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 09:22:24,119 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 09:22:24,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 09:22:24,127 INFO L82 PathProgramCache]: Analyzing trace with hash 309099633, now seen corresponding path program 1 times [2019-09-09 09:22:24,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 09:22:24,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 09:22:24,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 09:22:24,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 09:22:24,178 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 09:22:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 09:22:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 09:22:28,425 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 09:22:28,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 09:22:28,426 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 09:22:28,436 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 09:22:28,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 09:22:28,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 09:22:28,450 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 3 states. [2019-09-09 09:22:38,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 09:22:38,918 INFO L93 Difference]: Finished difference Result 4037 states and 7350 transitions. [2019-09-09 09:22:38,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 09:22:38,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1690 [2019-09-09 09:22:38,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 09:22:38,983 INFO L225 Difference]: With dead ends: 4037 [2019-09-09 09:22:38,983 INFO L226 Difference]: Without dead ends: 3969 [2019-09-09 09:22:38,985 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 09:22:39,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3969 states. [2019-09-09 09:22:39,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3969 to 3953. [2019-09-09 09:22:39,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3953 states. [2019-09-09 09:22:39,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 7204 transitions. [2019-09-09 09:22:39,193 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 7204 transitions. Word has length 1690 [2019-09-09 09:22:39,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 09:22:39,198 INFO L475 AbstractCegarLoop]: Abstraction has 3953 states and 7204 transitions. [2019-09-09 09:22:39,198 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 09:22:39,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 7204 transitions. [2019-09-09 09:22:39,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1713 [2019-09-09 09:22:39,275 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 09:22:39,277 INFO L399 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 09:22:39,277 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 09:22:39,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 09:22:39,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1831940590, now seen corresponding path program 1 times [2019-09-09 09:22:39,279 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 09:22:39,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 09:22:39,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 09:22:39,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 09:22:39,281 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 09:22:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 09:22:43,216 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 09:22:43,216 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 09:22:43,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 09:22:43,217 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 09:22:43,221 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 09:22:43,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 09:22:43,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 09:22:43,222 INFO L87 Difference]: Start difference. First operand 3953 states and 7204 transitions. Second operand 4 states. [2019-09-09 09:23:00,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 09:23:00,833 INFO L93 Difference]: Finished difference Result 11098 states and 18715 transitions. [2019-09-09 09:23:00,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 09:23:00,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1712 [2019-09-09 09:23:00,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 09:23:00,908 INFO L225 Difference]: With dead ends: 11098 [2019-09-09 09:23:00,908 INFO L226 Difference]: Without dead ends: 11098 [2019-09-09 09:23:00,909 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 09:23:00,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11098 states. [2019-09-09 09:23:01,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11098 to 10962. [2019-09-09 09:23:01,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10962 states. [2019-09-09 09:23:01,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10962 states to 10962 states and 18449 transitions. [2019-09-09 09:23:01,230 INFO L78 Accepts]: Start accepts. Automaton has 10962 states and 18449 transitions. Word has length 1712 [2019-09-09 09:23:01,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 09:23:01,234 INFO L475 AbstractCegarLoop]: Abstraction has 10962 states and 18449 transitions. [2019-09-09 09:23:01,235 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 09:23:01,236 INFO L276 IsEmpty]: Start isEmpty. Operand 10962 states and 18449 transitions. [2019-09-09 09:23:01,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1732 [2019-09-09 09:23:01,410 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 09:23:01,411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 09:23:01,412 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 09:23:01,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 09:23:01,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1231333183, now seen corresponding path program 1 times [2019-09-09 09:23:01,413 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 09:23:01,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 09:23:01,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 09:23:01,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 09:23:01,415 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 09:23:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 09:23:02,876 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 31 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-09 09:23:02,877 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 09:23:02,877 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 09:23:02,879 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 1732 with the following transitions: [2019-09-09 09:23:02,893 INFO L207 CegarAbsIntRunner]: [0], [9], [13], [15], [20], [24], [28], [32], [36], [40], [44], [48], [52], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [135], [139], [143], [147], [158], [162], [166], [170], [174], [178], [182], [193], [197], [201], [205], [209], [213], [217], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [316], [327], [331], [335], [346], [350], [354], [358], [362], [366], [370], [374], [378], [382], [386], [390], [394], [398], [402], [406], [413], [421], [429], [437], [445], [453], [461], [469], [477], [485], [493], [501], 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[8138], [8142], [8146], [8150], [8154], [8158], [8162], [8166], [8170], [8174], [8178], [8182], [8186], [8190], [8194], [8198], [8202], [8213], [8224], [8228], [8232], [8236], [8240], [8244], [8248], [8252], [8256], [8267], [8271], [8275], [8279], [8283], [8294], [8298], [8302], [8306], [8310], [8314], [8318], [8322], [8333], [8337], [8341], [8345], [8349], [8353], [8364], [8368], [8379], [8383], [8387], [8391], [8402], [8406], [8410], [8414], [8418], [8422], [8426], [8437], [8448], [8452], [8456], [8460], [8464], [8468], [8472], [8476], [8480], [8484], [8488], [8492], [8496], [8500], [8504], [8508], [8512], [8515], [8519], [8520], [8521], [8523], [8525], [8527], [8529], [8531], [8533], [8535], [8536], [8537] [2019-09-09 09:23:03,010 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 09:23:03,011 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)