/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 -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:03:28,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:03:28,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:03:28,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 19:03:28,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 19:03:28,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 19:03:28,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 19:03:28,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 19:03:28,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 19:03:28,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 19:03:28,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 19:03:28,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 19:03:28,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:03:28,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:03:28,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:03:29,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:03:29,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:03:29,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:03:29,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:03:29,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:03:29,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:03:29,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:03:29,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:03:29,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:03:29,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 19:03:29,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 19:03:29,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 19:03:29,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 19:03:29,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 19:03:29,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 19:03:29,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 19:03:29,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 19:03:29,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 19:03:29,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:03:29,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:03:29,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:03:29,041 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 19:03:29,073 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:03:29,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:03:29,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:03:29,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:03:29,078 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:03:29,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:03:29,078 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:03:29,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:03:29,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:03:29,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:03:29,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:03:29,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:03:29,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:03:29,083 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:03:29,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:03:29,083 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:03:29,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:03:29,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:03:29,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:03:29,084 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:03:29,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:03:29,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:03:29,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:03:29,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:03:29,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:03:29,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:03:29,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:03:29,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:03:29,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:03:29,359 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:03:29,376 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:03:29,379 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:03:29,381 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:03:29,381 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:03:29,382 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label46.c [2019-11-06 19:03:29,451 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b422ac5d/1073035aea46415e96152e58eea4ff7d/FLAGe14a41d29 [2019-11-06 19:03:30,237 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:03:30,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label46.c [2019-11-06 19:03:30,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b422ac5d/1073035aea46415e96152e58eea4ff7d/FLAGe14a41d29 [2019-11-06 19:03:30,325 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b422ac5d/1073035aea46415e96152e58eea4ff7d [2019-11-06 19:03:30,335 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:03:30,337 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:03:30,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:03:30,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:03:30,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:03:30,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:03:30" (1/1) ... [2019-11-06 19:03:30,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19891321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:30, skipping insertion in model container [2019-11-06 19:03:30,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:03:30" (1/1) ... [2019-11-06 19:03:30,354 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:03:30,516 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:03:32,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:03:32,018 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:03:32,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:03:32,673 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:03:32,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:32 WrapperNode [2019-11-06 19:03:32,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:03:32,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:03:32,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:03:32,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:03:32,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:32" (1/1) ... [2019-11-06 19:03:32,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:32" (1/1) ... [2019-11-06 19:03:32,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:32" (1/1) ... [2019-11-06 19:03:32,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:32" (1/1) ... [2019-11-06 19:03:32,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:32" (1/1) ... [2019-11-06 19:03:32,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:32" (1/1) ... [2019-11-06 19:03:32,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:32" (1/1) ... [2019-11-06 19:03:32,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:03:32,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:03:32,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:03:32,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:03:32,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:32" (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 19:03:33,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:03:33,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:03:33,011 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:03:33,012 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 19:03:33,012 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 19:03:33,012 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-06 19:03:33,012 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:03:33,012 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:03:33,013 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 19:03:33,013 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 19:03:33,013 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-06 19:03:33,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:03:33,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:03:33,013 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:03:33,014 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:03:33,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:03:33,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:03:37,377 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:03:37,378 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:03:37,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:03:37 BoogieIcfgContainer [2019-11-06 19:03:37,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:03:37,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:03:37,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:03:37,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:03:37,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:03:30" (1/3) ... [2019-11-06 19:03:37,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9b11bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:03:37, skipping insertion in model container [2019-11-06 19:03:37,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:32" (2/3) ... [2019-11-06 19:03:37,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9b11bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:03:37, skipping insertion in model container [2019-11-06 19:03:37,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:03:37" (3/3) ... [2019-11-06 19:03:37,400 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label46.c [2019-11-06 19:03:37,413 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:03:37,423 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:03:37,435 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:03:37,480 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:03:37,481 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:03:37,481 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:03:37,481 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:03:37,481 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:03:37,481 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:03:37,481 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:03:37,482 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:03:37,528 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-11-06 19:03:37,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2019-11-06 19:03:37,579 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:03:37,581 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] [2019-11-06 19:03:37,583 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:03:37,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:03:37,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1865936323, now seen corresponding path program 1 times [2019-11-06 19:03:37,599 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:03:37,599 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182637800] [2019-11-06 19:03:37,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:03:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:39,923 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 19:03:39,924 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182637800] [2019-11-06 19:03:39,925 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:03:39,925 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:03:39,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365086970] [2019-11-06 19:03:39,934 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:03:39,935 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:03:39,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:03:39,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:03:39,952 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 5 states. [2019-11-06 19:03:47,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:03:47,965 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2019-11-06 19:03:47,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 19:03:47,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 804 [2019-11-06 19:03:47,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:03:48,041 INFO L225 Difference]: With dead ends: 2672 [2019-11-06 19:03:48,041 INFO L226 Difference]: Without dead ends: 1702 [2019-11-06 19:03:48,059 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 6 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-06 19:03:48,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2019-11-06 19:03:48,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2019-11-06 19:03:48,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1689 states. [2019-11-06 19:03:48,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 3029 transitions. [2019-11-06 19:03:48,283 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 3029 transitions. Word has length 804 [2019-11-06 19:03:48,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:03:48,287 INFO L462 AbstractCegarLoop]: Abstraction has 1689 states and 3029 transitions. [2019-11-06 19:03:48,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:03:48,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 3029 transitions. [2019-11-06 19:03:48,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2019-11-06 19:03:48,323 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:03:48,325 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:03:48,325 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:03:48,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:03:48,326 INFO L82 PathProgramCache]: Analyzing trace with hash -398097262, now seen corresponding path program 1 times [2019-11-06 19:03:48,326 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:03:48,326 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716036037] [2019-11-06 19:03:48,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:03:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:50,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:03:50,046 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716036037] [2019-11-06 19:03:50,047 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137107420] [2019-11-06 19:03:50,047 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 19:03:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:50,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 1132 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-06 19:03:50,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:03:51,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:03:51,135 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:03:51,136 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-11-06 19:03:51,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942507358] [2019-11-06 19:03:51,139 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:03:51,139 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:03:51,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:03:51,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:03:51,140 INFO L87 Difference]: Start difference. First operand 1689 states and 3029 transitions. Second operand 3 states. [2019-11-06 19:03:55,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:03:55,379 INFO L93 Difference]: Finished difference Result 5053 states and 9124 transitions. [2019-11-06 19:03:55,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:03:55,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 812 [2019-11-06 19:03:55,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:03:55,400 INFO L225 Difference]: With dead ends: 5053 [2019-11-06 19:03:55,401 INFO L226 Difference]: Without dead ends: 3370 [2019-11-06 19:03:55,405 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 824 GetRequests, 819 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:03:55,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2019-11-06 19:03:55,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 3370. [2019-11-06 19:03:55,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3370 states. [2019-11-06 19:03:55,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3370 states to 3370 states and 5276 transitions. [2019-11-06 19:03:55,485 INFO L78 Accepts]: Start accepts. Automaton has 3370 states and 5276 transitions. Word has length 812 [2019-11-06 19:03:55,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:03:55,487 INFO L462 AbstractCegarLoop]: Abstraction has 3370 states and 5276 transitions. [2019-11-06 19:03:55,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:03:55,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3370 states and 5276 transitions. [2019-11-06 19:03:55,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2019-11-06 19:03:55,514 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:03:55,515 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 19:03:55,719 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:03:55,719 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:03:55,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:03:55,720 INFO L82 PathProgramCache]: Analyzing trace with hash -978901284, now seen corresponding path program 1 times [2019-11-06 19:03:55,721 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:03:55,721 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123424537] [2019-11-06 19:03:55,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:03:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:56,712 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:03:56,712 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123424537] [2019-11-06 19:03:56,713 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:03:56,713 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 19:03:56,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046314998] [2019-11-06 19:03:56,715 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 19:03:56,715 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:03:56,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 19:03:56,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-06 19:03:56,716 INFO L87 Difference]: Start difference. First operand 3370 states and 5276 transitions. Second operand 8 states.