/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_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:02:55,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:02:55,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:02:55,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 19:02:55,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 19:02:55,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 19:02:55,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 19:02:55,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 19:02:55,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 19:02:55,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 19:02:55,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 19:02:55,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 19:02:55,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:02:55,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:02:55,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:02:55,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:02:55,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:02:55,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:02:55,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:02:55,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:02:55,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:02:55,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:02:55,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:02:55,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:02:55,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 19:02:55,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 19:02:55,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 19:02:55,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 19:02:55,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 19:02:55,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 19:02:55,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 19:02:55,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 19:02:55,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 19:02:55,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 19:02:55,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 19:02:55,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 19:02:55,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 19:02:55,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 19:02:55,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:02:55,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:02:55,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:02:55,898 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 19:02:55,919 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:02:55,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:02:55,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:02:55,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:02:55,922 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:02:55,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:02:55,922 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:02:55,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:02:55,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:02:55,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:02:55,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:02:55,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:02:55,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:02:55,924 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:02:55,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:02:55,924 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:02:55,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:02:55,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:02:55,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:02:55,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:02:55,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:02:55,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:02:55,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:02:55,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:02:55,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:02:55,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:02:55,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:02:55,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:02:55,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:02:56,187 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:02:56,201 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:02:56,205 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:02:56,206 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:02:56,207 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:02:56,208 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label41.c [2019-11-06 19:02:56,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08f4c1ff7/6e672e2e1fd24b70ae75a42399b010f5/FLAG1b1fd67c3 [2019-11-06 19:02:57,049 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:02:57,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label41.c [2019-11-06 19:02:57,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08f4c1ff7/6e672e2e1fd24b70ae75a42399b010f5/FLAG1b1fd67c3 [2019-11-06 19:02:57,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08f4c1ff7/6e672e2e1fd24b70ae75a42399b010f5 [2019-11-06 19:02:57,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:02:57,613 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:02:57,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:02:57,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:02:57,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:02:57,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:02:57" (1/1) ... [2019-11-06 19:02:57,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bcdcd2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:57, skipping insertion in model container [2019-11-06 19:02:57,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:02:57" (1/1) ... [2019-11-06 19:02:57,630 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:02:57,780 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:02:59,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:02:59,505 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:03:00,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:03:00,217 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:03:00,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:00 WrapperNode [2019-11-06 19:03:00,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:03:00,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:03:00,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:03:00,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:03:00,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:00" (1/1) ... [2019-11-06 19:03:00,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:00" (1/1) ... [2019-11-06 19:03:00,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:00" (1/1) ... [2019-11-06 19:03:00,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:00" (1/1) ... [2019-11-06 19:03:00,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:00" (1/1) ... [2019-11-06 19:03:00,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:00" (1/1) ... [2019-11-06 19:03:00,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:00" (1/1) ... [2019-11-06 19:03:00,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:03:00,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:03:00,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:03:00,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:03:00,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:00" (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 19:03:00,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:03:00,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:03:00,657 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:03:00,657 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 19:03:00,657 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 19:03:00,657 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-06 19:03:00,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:03:00,658 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:03:00,658 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 19:03:00,658 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 19:03:00,658 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-06 19:03:00,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:03:00,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:03:00,659 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:03:00,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:03:00,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:03:00,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:03:05,360 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:03:05,360 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:03:05,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:03:05 BoogieIcfgContainer [2019-11-06 19:03:05,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:03:05,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:03:05,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:03:05,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:03:05,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:02:57" (1/3) ... [2019-11-06 19:03:05,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fc13c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:03:05, skipping insertion in model container [2019-11-06 19:03:05,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:00" (2/3) ... [2019-11-06 19:03:05,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fc13c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:03:05, skipping insertion in model container [2019-11-06 19:03:05,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:03:05" (3/3) ... [2019-11-06 19:03:05,385 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label41.c [2019-11-06 19:03:05,400 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:03:05,412 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:03:05,424 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:03:05,468 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:03:05,468 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:03:05,468 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:03:05,468 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:03:05,468 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:03:05,468 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:03:05,469 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:03:05,469 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:03:05,515 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-11-06 19:03:05,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2019-11-06 19:03:05,565 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:03:05,567 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:03:05,569 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:03:05,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:03:05,576 INFO L82 PathProgramCache]: Analyzing trace with hash -2114335398, now seen corresponding path program 1 times [2019-11-06 19:03:05,584 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:03:05,585 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544294362] [2019-11-06 19:03:05,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:03:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:07,611 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 19:03:07,611 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544294362] [2019-11-06 19:03:07,612 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:03:07,612 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:03:07,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279634518] [2019-11-06 19:03:07,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:03:07,621 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:03:07,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:03:07,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:03:07,639 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 5 states. [2019-11-06 19:03:19,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:03:19,604 INFO L93 Difference]: Finished difference Result 3521 states and 6826 transitions. [2019-11-06 19:03:19,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:03:19,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 823 [2019-11-06 19:03:19,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:03:19,653 INFO L225 Difference]: With dead ends: 3521 [2019-11-06 19:03:19,653 INFO L226 Difference]: Without dead ends: 2547 [2019-11-06 19:03:19,663 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:03:19,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2019-11-06 19:03:19,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2534. [2019-11-06 19:03:19,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2534 states. [2019-11-06 19:03:19,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 4139 transitions. [2019-11-06 19:03:19,852 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 4139 transitions. Word has length 823 [2019-11-06 19:03:19,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:03:19,858 INFO L462 AbstractCegarLoop]: Abstraction has 2534 states and 4139 transitions. [2019-11-06 19:03:19,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:03:19,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 4139 transitions. [2019-11-06 19:03:19,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2019-11-06 19:03:19,890 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:03:19,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:03:19,892 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:03:19,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:03:19,892 INFO L82 PathProgramCache]: Analyzing trace with hash 112452513, now seen corresponding path program 1 times [2019-11-06 19:03:19,893 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:03:19,893 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222705843] [2019-11-06 19:03:19,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:03:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:20,509 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 19:03:20,509 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222705843] [2019-11-06 19:03:20,509 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:03:20,509 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 19:03:20,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641686336] [2019-11-06 19:03:20,513 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 19:03:20,513 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:03:20,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 19:03:20,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-06 19:03:20,514 INFO L87 Difference]: Start difference. First operand 2534 states and 4139 transitions. Second operand 8 states. [2019-11-06 19:03:31,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:03:31,222 INFO L93 Difference]: Finished difference Result 7750 states and 12918 transitions. [2019-11-06 19:03:31,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 19:03:31,230 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 838 [2019-11-06 19:03:31,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:03:31,260 INFO L225 Difference]: With dead ends: 7750 [2019-11-06 19:03:31,261 INFO L226 Difference]: Without dead ends: 5222 [2019-11-06 19:03:31,268 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2019-11-06 19:03:31,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5222 states. [2019-11-06 19:03:31,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5222 to 5161. [2019-11-06 19:03:31,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5161 states. [2019-11-06 19:03:31,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 8360 transitions. [2019-11-06 19:03:31,467 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 8360 transitions. Word has length 838 [2019-11-06 19:03:31,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:03:31,468 INFO L462 AbstractCegarLoop]: Abstraction has 5161 states and 8360 transitions. [2019-11-06 19:03:31,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 19:03:31,469 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 8360 transitions. [2019-11-06 19:03:31,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 858 [2019-11-06 19:03:31,500 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:03:31,501 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-11-06 19:03:31,501 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:03:31,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:03:31,504 INFO L82 PathProgramCache]: Analyzing trace with hash 191005426, now seen corresponding path program 1 times [2019-11-06 19:03:31,504 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:03:31,505 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24464454] [2019-11-06 19:03:31,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:03:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:32,520 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 19:03:32,521 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24464454] [2019-11-06 19:03:32,521 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725365116] [2019-11-06 19:03:32,521 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 19:03:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:32,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-06 19:03:32,913 INFO L279 TraceCheckSpWp]: Computing forward predicates...