/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_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:03:15,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:03:15,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:03:15,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 19:03:15,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 19:03:15,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 19:03:15,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 19:03:15,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 19:03:15,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 19:03:15,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 19:03:15,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 19:03:15,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 19:03:15,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:03:15,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:03:15,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:03:15,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:03:15,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:03:15,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:03:15,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:03:15,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:03:15,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:03:15,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:03:15,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:03:15,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:03:15,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 19:03:15,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 19:03:15,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 19:03:15,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 19:03:15,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 19:03:15,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 19:03:15,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 19:03:15,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 19:03:15,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 19:03:15,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:03:15,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:03:15,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:03:15,897 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 19:03:15,936 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:03:15,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:03:15,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:03:15,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:03:15,938 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:03:15,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:03:15,942 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:03:15,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:03:15,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:03:15,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:03:15,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:03:15,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:03:15,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:03:15,943 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:03:15,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:03:15,944 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:03:15,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:03:15,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:03:15,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:03:15,945 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:03:15,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:03:15,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:03:15,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:03:15,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:03:15,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:03:15,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:03:15,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:03:15,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:03:15,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:03:16,276 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:03:16,292 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:03:16,296 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:03:16,298 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:03:16,298 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:03:16,299 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label43.c [2019-11-06 19:03:16,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2038c3928/761faf79a403424b827f293ea1fa0a9d/FLAG4dd8a23d3 [2019-11-06 19:03:17,071 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:03:17,072 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label43.c [2019-11-06 19:03:17,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2038c3928/761faf79a403424b827f293ea1fa0a9d/FLAG4dd8a23d3 [2019-11-06 19:03:17,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2038c3928/761faf79a403424b827f293ea1fa0a9d [2019-11-06 19:03:17,164 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:03:17,166 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:03:17,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:03:17,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:03:17,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:03:17,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:03:17" (1/1) ... [2019-11-06 19:03:17,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f3db85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:17, skipping insertion in model container [2019-11-06 19:03:17,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:03:17" (1/1) ... [2019-11-06 19:03:17,183 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:03:17,332 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:03:19,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:03:19,116 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:03:19,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:03:19,787 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:03:19,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:19 WrapperNode [2019-11-06 19:03:19,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:03:19,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:03:19,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:03:19,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:03:19,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:19" (1/1) ... [2019-11-06 19:03:19,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:19" (1/1) ... [2019-11-06 19:03:19,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:19" (1/1) ... [2019-11-06 19:03:19,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:19" (1/1) ... [2019-11-06 19:03:19,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:19" (1/1) ... [2019-11-06 19:03:19,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:19" (1/1) ... [2019-11-06 19:03:20,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:19" (1/1) ... [2019-11-06 19:03:20,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:03:20,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:03:20,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:03:20,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:03:20,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:19" (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 19:03:20,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:03:20,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:03:20,119 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:03:20,120 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 19:03:20,120 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 19:03:20,120 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-06 19:03:20,120 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:03:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:03:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 19:03:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 19:03:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-06 19:03:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:03:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:03:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:03:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:03:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:03:20,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:03:24,609 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:03:24,609 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:03:24,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:03:24 BoogieIcfgContainer [2019-11-06 19:03:24,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:03:24,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:03:24,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:03:24,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:03:24,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:03:17" (1/3) ... [2019-11-06 19:03:24,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe6c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:03:24, skipping insertion in model container [2019-11-06 19:03:24,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:19" (2/3) ... [2019-11-06 19:03:24,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe6c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:03:24, skipping insertion in model container [2019-11-06 19:03:24,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:03:24" (3/3) ... [2019-11-06 19:03:24,623 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label43.c [2019-11-06 19:03:24,633 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:03:24,641 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:03:24,653 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:03:24,686 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:03:24,686 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:03:24,686 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:03:24,686 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:03:24,687 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:03:24,687 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:03:24,687 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:03:24,687 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:03:24,723 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-11-06 19:03:24,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2019-11-06 19:03:24,773 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:03:24,775 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:03:24,778 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:03:24,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:03:24,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1377691781, now seen corresponding path program 1 times [2019-11-06 19:03:24,794 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:03:24,795 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049326455] [2019-11-06 19:03:24,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:03:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:27,115 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 19:03:27,115 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049326455] [2019-11-06 19:03:27,116 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:03:27,116 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:03:27,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199729076] [2019-11-06 19:03:27,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:03:27,125 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:03:27,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:03:27,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:03:27,140 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 5 states. [2019-11-06 19:03:35,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:03:35,337 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2019-11-06 19:03:35,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 19:03:35,340 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 810 [2019-11-06 19:03:35,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:03:35,410 INFO L225 Difference]: With dead ends: 2672 [2019-11-06 19:03:35,410 INFO L226 Difference]: Without dead ends: 1702 [2019-11-06 19:03:35,427 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 6 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-06 19:03:35,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2019-11-06 19:03:35,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2019-11-06 19:03:35,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1689 states. [2019-11-06 19:03:35,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 3029 transitions. [2019-11-06 19:03:35,642 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 3029 transitions. Word has length 810 [2019-11-06 19:03:35,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:03:35,645 INFO L462 AbstractCegarLoop]: Abstraction has 1689 states and 3029 transitions. [2019-11-06 19:03:35,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:03:35,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 3029 transitions. [2019-11-06 19:03:35,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2019-11-06 19:03:35,679 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:03:35,680 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, 1, 1, 1, 1, 1, 1] [2019-11-06 19:03:35,681 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:03:35,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:03:35,682 INFO L82 PathProgramCache]: Analyzing trace with hash 370218762, now seen corresponding path program 1 times [2019-11-06 19:03:35,682 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:03:35,682 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508252811] [2019-11-06 19:03:35,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:03:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:37,114 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 19:03:37,115 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508252811] [2019-11-06 19:03:37,115 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232900705] [2019-11-06 19:03:37,115 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 19:03:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:37,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-06 19:03:37,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:03:38,332 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 19:03:38,332 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:03:38,333 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-11-06 19:03:38,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677350415] [2019-11-06 19:03:38,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:03:38,337 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:03:38,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:03:38,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:03:38,356 INFO L87 Difference]: Start difference. First operand 1689 states and 3029 transitions. Second operand 3 states. [2019-11-06 19:03:42,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:03:42,490 INFO L93 Difference]: Finished difference Result 5053 states and 9124 transitions. [2019-11-06 19:03:42,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:03:42,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 818 [2019-11-06 19:03:42,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:03:42,513 INFO L225 Difference]: With dead ends: 5053 [2019-11-06 19:03:42,513 INFO L226 Difference]: Without dead ends: 3370 [2019-11-06 19:03:42,518 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 825 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:03:42,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2019-11-06 19:03:42,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 3370. [2019-11-06 19:03:42,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3370 states. [2019-11-06 19:03:42,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3370 states to 3370 states and 5276 transitions. [2019-11-06 19:03:42,613 INFO L78 Accepts]: Start accepts. Automaton has 3370 states and 5276 transitions. Word has length 818 [2019-11-06 19:03:42,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:03:42,615 INFO L462 AbstractCegarLoop]: Abstraction has 3370 states and 5276 transitions. [2019-11-06 19:03:42,615 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:03:42,616 INFO L276 IsEmpty]: Start isEmpty. Operand 3370 states and 5276 transitions. [2019-11-06 19:03:42,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2019-11-06 19:03:42,638 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:03:42,639 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, 1, 1, 1, 1, 1, 1] [2019-11-06 19:03:42,850 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:03:42,850 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:03:42,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:03:42,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1564583468, now seen corresponding path program 1 times [2019-11-06 19:03:42,852 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:03:42,853 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209334003] [2019-11-06 19:03:42,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:03:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:44,015 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 19:03:44,016 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209334003] [2019-11-06 19:03:44,016 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:03:44,016 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 19:03:44,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880183623] [2019-11-06 19:03:44,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 19:03:44,029 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:03:44,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 19:03:44,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-06 19:03:44,030 INFO L87 Difference]: Start difference. First operand 3370 states and 5276 transitions. Second operand 8 states.