/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 22:05:46,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 22:05:46,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 22:05:46,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 22:05:46,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 22:05:46,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 22:05:46,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 22:05:46,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 22:05:46,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 22:05:46,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 22:05:46,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 22:05:46,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 22:05:46,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 22:05:46,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 22:05:46,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 22:05:46,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 22:05:46,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 22:05:46,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 22:05:46,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 22:05:46,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 22:05:46,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 22:05:46,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 22:05:46,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 22:05:46,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 22:05:46,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 22:05:46,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 22:05:46,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 22:05:46,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 22:05:46,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 22:05:46,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 22:05:46,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 22:05:46,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 22:05:46,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 22:05:46,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 22:05:46,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 22:05:46,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 22:05:46,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 22:05:46,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 22:05:46,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 22:05:46,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 22:05:46,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 22:05:46,330 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 [2020-07-20 22:05:46,344 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 22:05:46,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 22:05:46,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 22:05:46,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 22:05:46,346 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 22:05:46,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 22:05:46,347 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 22:05:46,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 22:05:46,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 22:05:46,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 22:05:46,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 22:05:46,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 22:05:46,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 22:05:46,348 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 22:05:46,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 22:05:46,348 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 22:05:46,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 22:05:46,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 22:05:46,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 22:05:46,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 22:05:46,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 22:05:46,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:05:46,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 22:05:46,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 22:05:46,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 22:05:46,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 22:05:46,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:05:46,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 22:05:46,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 22:05:46,351 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 22:05:46,638 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 22:05:46,652 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 22:05:46,655 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 22:05:46,657 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 22:05:46,657 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 22:05:46,658 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2020-07-20 22:05:46,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cee3cfc80/a1b7fcc140fc450496ac363d6af523df/FLAGd021ef60e [2020-07-20 22:05:47,274 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 22:05:47,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2020-07-20 22:05:47,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cee3cfc80/a1b7fcc140fc450496ac363d6af523df/FLAGd021ef60e [2020-07-20 22:05:47,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cee3cfc80/a1b7fcc140fc450496ac363d6af523df [2020-07-20 22:05:47,560 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 22:05:47,563 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 22:05:47,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 22:05:47,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 22:05:47,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 22:05:47,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:05:47" (1/1) ... [2020-07-20 22:05:47,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6429128a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:05:47, skipping insertion in model container [2020-07-20 22:05:47,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:05:47" (1/1) ... [2020-07-20 22:05:47,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 22:05:47,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 22:05:48,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:05:48,195 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 22:05:48,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:05:48,352 INFO L208 MainTranslator]: Completed translation [2020-07-20 22:05:48,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:05:48 WrapperNode [2020-07-20 22:05:48,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 22:05:48,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 22:05:48,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 22:05:48,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 22:05:48,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:05:48" (1/1) ... [2020-07-20 22:05:48,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:05:48" (1/1) ... [2020-07-20 22:05:48,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:05:48" (1/1) ... [2020-07-20 22:05:48,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:05:48" (1/1) ... [2020-07-20 22:05:48,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:05:48" (1/1) ... [2020-07-20 22:05:48,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:05:48" (1/1) ... [2020-07-20 22:05:48,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:05:48" (1/1) ... [2020-07-20 22:05:48,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 22:05:48,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 22:05:48,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 22:05:48,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 22:05:48,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:05:48" (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 [2020-07-20 22:05:48,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 22:05:48,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 22:05:48,568 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 22:05:48,568 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 22:05:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 22:05:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 22:05:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 22:05:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 22:05:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 22:05:48,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 22:05:48,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 22:05:49,775 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 22:05:49,776 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 22:05:49,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:05:49 BoogieIcfgContainer [2020-07-20 22:05:49,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 22:05:49,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 22:05:49,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 22:05:49,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 22:05:49,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:05:47" (1/3) ... [2020-07-20 22:05:49,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a044fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:05:49, skipping insertion in model container [2020-07-20 22:05:49,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:05:48" (2/3) ... [2020-07-20 22:05:49,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a044fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:05:49, skipping insertion in model container [2020-07-20 22:05:49,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:05:49" (3/3) ... [2020-07-20 22:05:49,791 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label52.c [2020-07-20 22:05:49,801 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 22:05:49,809 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 22:05:49,823 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 22:05:49,850 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 22:05:49,850 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 22:05:49,851 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 22:05:49,851 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 22:05:49,851 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 22:05:49,851 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 22:05:49,851 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 22:05:49,851 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 22:05:49,875 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2020-07-20 22:05:49,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-07-20 22:05:49,888 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:05:49,890 INFO L422 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] [2020-07-20 22:05:49,890 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:05:49,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:05:49,895 INFO L82 PathProgramCache]: Analyzing trace with hash -777531634, now seen corresponding path program 1 times [2020-07-20 22:05:49,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:05:49,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915260754] [2020-07-20 22:05:49,904 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:05:50,077 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:05:50,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:05:50,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:05:50,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:05:50,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:05:50,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:05:50,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915260754] [2020-07-20 22:05:50,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:05:50,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:05:50,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195195673] [2020-07-20 22:05:50,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:05:50,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:05:50,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:05:50,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:05:50,220 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 3 states. [2020-07-20 22:05:51,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:05:51,128 INFO L93 Difference]: Finished difference Result 619 states and 1060 transitions. [2020-07-20 22:05:51,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:05:51,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2020-07-20 22:05:51,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:05:51,145 INFO L225 Difference]: With dead ends: 619 [2020-07-20 22:05:51,145 INFO L226 Difference]: Without dead ends: 321 [2020-07-20 22:05:51,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:05:51,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-07-20 22:05:51,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 319. [2020-07-20 22:05:51,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-07-20 22:05:51,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 421 transitions. [2020-07-20 22:05:51,220 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 421 transitions. Word has length 110 [2020-07-20 22:05:51,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:05:51,221 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 421 transitions. [2020-07-20 22:05:51,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:05:51,221 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 421 transitions. [2020-07-20 22:05:51,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-07-20 22:05:51,225 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:05:51,226 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-20 22:05:51,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:05:51,439 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:05:51,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:05:51,440 INFO L82 PathProgramCache]: Analyzing trace with hash -518810049, now seen corresponding path program 1 times [2020-07-20 22:05:51,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:05:51,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830502695] [2020-07-20 22:05:51,442 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:05:51,539 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:05:51,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:05:51,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:05:51,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:05:51,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:05:51,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:05:51,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830502695] [2020-07-20 22:05:51,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:05:51,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:05:51,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013478029] [2020-07-20 22:05:51,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:05:51,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:05:51,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:05:51,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:05:51,612 INFO L87 Difference]: Start difference. First operand 319 states and 421 transitions. Second operand 3 states. [2020-07-20 22:05:52,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:05:52,333 INFO L93 Difference]: Finished difference Result 782 states and 1068 transitions. [2020-07-20 22:05:52,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:05:52,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2020-07-20 22:05:52,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:05:52,346 INFO L225 Difference]: With dead ends: 782 [2020-07-20 22:05:52,348 INFO L226 Difference]: Without dead ends: 469 [2020-07-20 22:05:52,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:05:52,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-07-20 22:05:52,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 469. [2020-07-20 22:05:52,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2020-07-20 22:05:52,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 600 transitions. [2020-07-20 22:05:52,427 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 600 transitions. Word has length 119 [2020-07-20 22:05:52,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:05:52,428 INFO L479 AbstractCegarLoop]: Abstraction has 469 states and 600 transitions. [2020-07-20 22:05:52,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:05:52,428 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 600 transitions. [2020-07-20 22:05:52,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-07-20 22:05:52,439 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:05:52,440 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:05:52,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:05:52,641 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:05:52,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:05:52,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1290355991, now seen corresponding path program 1 times [2020-07-20 22:05:52,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:05:52,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068929591] [2020-07-20 22:05:52,643 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:05:52,773 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:05:52,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:05:52,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 22:05:52,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:05:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 22:05:52,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:05:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 22:05:52,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068929591] [2020-07-20 22:05:52,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 22:05:52,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2020-07-20 22:05:52,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262745619] [2020-07-20 22:05:52,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 22:05:52,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:05:52,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 22:05:52,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:05:52,963 INFO L87 Difference]: Start difference. First operand 469 states and 600 transitions. Second operand 4 states. [2020-07-20 22:05:53,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:05:53,708 INFO L93 Difference]: Finished difference Result 1386 states and 1800 transitions. [2020-07-20 22:05:53,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 22:05:53,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-07-20 22:05:53,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:05:53,715 INFO L225 Difference]: With dead ends: 1386 [2020-07-20 22:05:53,716 INFO L226 Difference]: Without dead ends: 923 [2020-07-20 22:05:53,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 254 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:05:53,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2020-07-20 22:05:53,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 923. [2020-07-20 22:05:53,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2020-07-20 22:05:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1177 transitions. [2020-07-20 22:05:53,752 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1177 transitions. Word has length 131 [2020-07-20 22:05:53,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:05:53,752 INFO L479 AbstractCegarLoop]: Abstraction has 923 states and 1177 transitions. [2020-07-20 22:05:53,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 22:05:53,753 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1177 transitions. [2020-07-20 22:05:53,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-07-20 22:05:53,758 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:05:53,758 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:05:53,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:05:53,973 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:05:53,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:05:53,974 INFO L82 PathProgramCache]: Analyzing trace with hash 379297220, now seen corresponding path program 1 times [2020-07-20 22:05:53,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:05:53,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541162581] [2020-07-20 22:05:53,976 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:05:54,142 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:05:54,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:05:54,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:05:54,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:05:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-20 22:05:54,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:05:54,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541162581] [2020-07-20 22:05:54,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:05:54,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:05:54,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580285404] [2020-07-20 22:05:54,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:05:54,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:05:54,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:05:54,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:05:54,184 INFO L87 Difference]: Start difference. First operand 923 states and 1177 transitions. Second operand 3 states. [2020-07-20 22:05:54,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:05:54,783 INFO L93 Difference]: Finished difference Result 2130 states and 2809 transitions. [2020-07-20 22:05:54,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:05:54,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-07-20 22:05:54,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:05:54,793 INFO L225 Difference]: With dead ends: 2130 [2020-07-20 22:05:54,794 INFO L226 Difference]: Without dead ends: 1213 [2020-07-20 22:05:54,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:05:54,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2020-07-20 22:05:54,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1211. [2020-07-20 22:05:54,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1211 states. [2020-07-20 22:05:54,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1581 transitions. [2020-07-20 22:05:54,834 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1581 transitions. Word has length 139 [2020-07-20 22:05:54,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:05:54,835 INFO L479 AbstractCegarLoop]: Abstraction has 1211 states and 1581 transitions. [2020-07-20 22:05:54,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:05:54,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1581 transitions. [2020-07-20 22:05:54,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-07-20 22:05:54,840 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:05:54,840 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-20 22:05:55,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:05:55,048 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:05:55,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:05:55,049 INFO L82 PathProgramCache]: Analyzing trace with hash 2035563450, now seen corresponding path program 1 times [2020-07-20 22:05:55,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:05:55,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780601627] [2020-07-20 22:05:55,050 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:05:55,154 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:05:55,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:05:55,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 22:05:55,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:05:55,225 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 22:05:55,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:05:55,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780601627] [2020-07-20 22:05:55,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:05:55,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:05:55,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587429982] [2020-07-20 22:05:55,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:05:55,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:05:55,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:05:55,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:05:55,230 INFO L87 Difference]: Start difference. First operand 1211 states and 1581 transitions. Second operand 5 states. [2020-07-20 22:05:56,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:05:56,049 INFO L93 Difference]: Finished difference Result 3660 states and 5049 transitions. [2020-07-20 22:05:56,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 22:05:56,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-07-20 22:05:56,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:05:56,068 INFO L225 Difference]: With dead ends: 3660 [2020-07-20 22:05:56,068 INFO L226 Difference]: Without dead ends: 2455 [2020-07-20 22:05:56,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 22:05:56,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2020-07-20 22:05:56,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2423. [2020-07-20 22:05:56,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2423 states. [2020-07-20 22:05:56,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3126 transitions. [2020-07-20 22:05:56,161 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 3126 transitions. Word has length 145 [2020-07-20 22:05:56,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:05:56,161 INFO L479 AbstractCegarLoop]: Abstraction has 2423 states and 3126 transitions. [2020-07-20 22:05:56,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:05:56,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 3126 transitions. [2020-07-20 22:05:56,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-07-20 22:05:56,169 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:05:56,170 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-20 22:05:56,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:05:56,384 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:05:56,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:05:56,386 INFO L82 PathProgramCache]: Analyzing trace with hash -553887348, now seen corresponding path program 1 times [2020-07-20 22:05:56,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:05:56,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458032736] [2020-07-20 22:05:56,387 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:05:56,528 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:05:56,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:05:56,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:05:56,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:05:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 22:05:56,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:05:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 58 proven. 19 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 22:05:56,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458032736] [2020-07-20 22:05:56,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:05:56,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 22:05:56,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491900377] [2020-07-20 22:05:56,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 22:05:56,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:05:56,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 22:05:56,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 22:05:56,704 INFO L87 Difference]: Start difference. First operand 2423 states and 3126 transitions. Second operand 6 states. [2020-07-20 22:05:57,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:05:57,567 INFO L93 Difference]: Finished difference Result 5334 states and 6896 transitions. [2020-07-20 22:05:57,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 22:05:57,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2020-07-20 22:05:57,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:05:57,581 INFO L225 Difference]: With dead ends: 5334 [2020-07-20 22:05:57,582 INFO L226 Difference]: Without dead ends: 2608 [2020-07-20 22:05:57,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 332 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 22:05:57,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2020-07-20 22:05:57,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 2600. [2020-07-20 22:05:57,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2600 states. [2020-07-20 22:05:57,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 3064 transitions. [2020-07-20 22:05:57,722 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 3064 transitions. Word has length 168 [2020-07-20 22:05:57,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:05:57,723 INFO L479 AbstractCegarLoop]: Abstraction has 2600 states and 3064 transitions. [2020-07-20 22:05:57,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 22:05:57,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 3064 transitions. [2020-07-20 22:05:57,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-07-20 22:05:57,730 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:05:57,731 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-20 22:05:57,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:05:57,945 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:05:57,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:05:57,945 INFO L82 PathProgramCache]: Analyzing trace with hash 496219156, now seen corresponding path program 1 times [2020-07-20 22:05:57,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:05:57,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401263968] [2020-07-20 22:05:57,946 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:05:58,058 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:05:58,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:05:58,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 22:05:58,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:05:58,101 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 22:05:58,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:05:58,172 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 66 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-20 22:05:58,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401263968] [2020-07-20 22:05:58,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:05:58,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 22:05:58,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434616884] [2020-07-20 22:05:58,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 22:05:58,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:05:58,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 22:05:58,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:05:58,175 INFO L87 Difference]: Start difference. First operand 2600 states and 3064 transitions. Second operand 7 states. [2020-07-20 22:05:59,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:05:59,415 INFO L93 Difference]: Finished difference Result 7158 states and 8401 transitions. [2020-07-20 22:05:59,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 22:05:59,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-07-20 22:05:59,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:05:59,435 INFO L225 Difference]: With dead ends: 7158 [2020-07-20 22:05:59,436 INFO L226 Difference]: Without dead ends: 4412 [2020-07-20 22:05:59,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-20 22:05:59,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4412 states. [2020-07-20 22:05:59,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4412 to 4403. [2020-07-20 22:05:59,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4403 states. [2020-07-20 22:05:59,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4403 states to 4403 states and 5049 transitions. [2020-07-20 22:05:59,557 INFO L78 Accepts]: Start accepts. Automaton has 4403 states and 5049 transitions. Word has length 172 [2020-07-20 22:05:59,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:05:59,557 INFO L479 AbstractCegarLoop]: Abstraction has 4403 states and 5049 transitions. [2020-07-20 22:05:59,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 22:05:59,557 INFO L276 IsEmpty]: Start isEmpty. Operand 4403 states and 5049 transitions. [2020-07-20 22:05:59,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-07-20 22:05:59,569 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:05:59,569 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:05:59,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:05:59,783 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:05:59,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:05:59,784 INFO L82 PathProgramCache]: Analyzing trace with hash -2088565163, now seen corresponding path program 1 times [2020-07-20 22:05:59,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:05:59,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168192485] [2020-07-20 22:05:59,785 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:05:59,912 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:05:59,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:05:59,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:05:59,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:05:59,973 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-07-20 22:05:59,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:06:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 138 proven. 19 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-07-20 22:06:00,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168192485] [2020-07-20 22:06:00,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:06:00,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 22:06:00,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185004073] [2020-07-20 22:06:00,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 22:06:00,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:06:00,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 22:06:00,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:06:00,118 INFO L87 Difference]: Start difference. First operand 4403 states and 5049 transitions. Second operand 7 states. [2020-07-20 22:06:01,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:06:01,374 INFO L93 Difference]: Finished difference Result 9201 states and 10570 transitions. [2020-07-20 22:06:01,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 22:06:01,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-07-20 22:06:01,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:06:01,391 INFO L225 Difference]: With dead ends: 9201 [2020-07-20 22:06:01,391 INFO L226 Difference]: Without dead ends: 3920 [2020-07-20 22:06:01,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 435 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-20 22:06:01,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3920 states. [2020-07-20 22:06:01,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3920 to 3920. [2020-07-20 22:06:01,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3920 states. [2020-07-20 22:06:01,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3920 states to 3920 states and 4347 transitions. [2020-07-20 22:06:01,492 INFO L78 Accepts]: Start accepts. Automaton has 3920 states and 4347 transitions. Word has length 220 [2020-07-20 22:06:01,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:06:01,492 INFO L479 AbstractCegarLoop]: Abstraction has 3920 states and 4347 transitions. [2020-07-20 22:06:01,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 22:06:01,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3920 states and 4347 transitions. [2020-07-20 22:06:01,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-07-20 22:06:01,503 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:06:01,503 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-07-20 22:06:01,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:01,718 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:06:01,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:06:01,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1817129599, now seen corresponding path program 1 times [2020-07-20 22:06:01,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:06:01,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664284726] [2020-07-20 22:06:01,720 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:01,868 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:06:01,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:06:01,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:06:01,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:06:01,989 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-07-20 22:06:01,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:06:02,099 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 147 proven. 26 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-07-20 22:06:02,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664284726] [2020-07-20 22:06:02,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:06:02,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 22:06:02,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807939724] [2020-07-20 22:06:02,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 22:06:02,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:06:02,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 22:06:02,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:06:02,103 INFO L87 Difference]: Start difference. First operand 3920 states and 4347 transitions. Second operand 7 states. [2020-07-20 22:06:02,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:06:02,734 INFO L93 Difference]: Finished difference Result 6785 states and 7551 transitions. [2020-07-20 22:06:02,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 22:06:02,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 234 [2020-07-20 22:06:02,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:06:02,751 INFO L225 Difference]: With dead ends: 6785 [2020-07-20 22:06:02,751 INFO L226 Difference]: Without dead ends: 3159 [2020-07-20 22:06:02,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 462 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 22:06:02,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2020-07-20 22:06:02,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 3013. [2020-07-20 22:06:02,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3013 states. [2020-07-20 22:06:02,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 3275 transitions. [2020-07-20 22:06:02,841 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 3275 transitions. Word has length 234 [2020-07-20 22:06:02,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:06:02,841 INFO L479 AbstractCegarLoop]: Abstraction has 3013 states and 3275 transitions. [2020-07-20 22:06:02,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 22:06:02,842 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 3275 transitions. [2020-07-20 22:06:02,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-07-20 22:06:02,850 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:06:02,851 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-20 22:06:03,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:03,064 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:06:03,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:06:03,065 INFO L82 PathProgramCache]: Analyzing trace with hash 56924203, now seen corresponding path program 1 times [2020-07-20 22:06:03,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:06:03,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256289083] [2020-07-20 22:06:03,066 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:03,206 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:06:03,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:06:03,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 22:06:03,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:06:03,295 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-07-20 22:06:03,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:06:03,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256289083] [2020-07-20 22:06:03,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:06:03,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:06:03,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839877028] [2020-07-20 22:06:03,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:06:03,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:06:03,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:06:03,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:06:03,297 INFO L87 Difference]: Start difference. First operand 3013 states and 3275 transitions. Second operand 3 states. [2020-07-20 22:06:03,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:06:03,749 INFO L93 Difference]: Finished difference Result 4803 states and 5215 transitions. [2020-07-20 22:06:03,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:06:03,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2020-07-20 22:06:03,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:06:03,750 INFO L225 Difference]: With dead ends: 4803 [2020-07-20 22:06:03,750 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 22:06:03,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:06:03,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 22:06:03,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 22:06:03,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 22:06:03,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 22:06:03,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 236 [2020-07-20 22:06:03,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:06:03,760 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 22:06:03,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:06:03,760 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 22:06:03,760 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 22:06:03,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:03,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 22:06:05,856 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 135 DAG size of output: 81 [2020-07-20 22:06:06,236 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-07-20 22:06:06,559 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-07-20 22:06:06,563 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:06:06,564 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a17~0 |old(~a17~0)|) (<= ~a28~0 |old(~a28~0)|) (or (<= ~a11~0 0) (< 0 |old(~a11~0)|)) (= ~a19~0 |old(~a19~0)|) (= ~a25~0 |old(~a25~0)|)) [2020-07-20 22:06:06,564 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:06:06,564 INFO L268 CegarLoopResult]: For program point L564-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,564 INFO L268 CegarLoopResult]: For program point L531-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,565 INFO L268 CegarLoopResult]: For program point L498-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,565 INFO L268 CegarLoopResult]: For program point L465-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,565 INFO L268 CegarLoopResult]: For program point L432-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,565 INFO L268 CegarLoopResult]: For program point L234(lines 234 413) no Hoare annotation was computed. [2020-07-20 22:06:06,565 INFO L268 CegarLoopResult]: For program point L69(lines 69 413) no Hoare annotation was computed. [2020-07-20 22:06:06,566 INFO L268 CegarLoopResult]: For program point L565(line 565) no Hoare annotation was computed. [2020-07-20 22:06:06,566 INFO L268 CegarLoopResult]: For program point L532(line 532) no Hoare annotation was computed. [2020-07-20 22:06:06,566 INFO L268 CegarLoopResult]: For program point L499(line 499) no Hoare annotation was computed. [2020-07-20 22:06:06,566 INFO L268 CegarLoopResult]: For program point L466(line 466) no Hoare annotation was computed. [2020-07-20 22:06:06,566 INFO L268 CegarLoopResult]: For program point L433(line 433) no Hoare annotation was computed. [2020-07-20 22:06:06,566 INFO L268 CegarLoopResult]: For program point L202(lines 202 413) no Hoare annotation was computed. [2020-07-20 22:06:06,566 INFO L268 CegarLoopResult]: For program point L169(lines 169 413) no Hoare annotation was computed. [2020-07-20 22:06:06,567 INFO L268 CegarLoopResult]: For program point L368(lines 368 413) no Hoare annotation was computed. [2020-07-20 22:06:06,567 INFO L268 CegarLoopResult]: For program point L203(lines 203 210) no Hoare annotation was computed. [2020-07-20 22:06:06,567 INFO L268 CegarLoopResult]: For program point L203-2(lines 203 210) no Hoare annotation was computed. [2020-07-20 22:06:06,567 INFO L268 CegarLoopResult]: For program point L38(lines 38 413) no Hoare annotation was computed. [2020-07-20 22:06:06,567 INFO L268 CegarLoopResult]: For program point L567-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,567 INFO L268 CegarLoopResult]: For program point L534-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,567 INFO L268 CegarLoopResult]: For program point L501-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,567 INFO L268 CegarLoopResult]: For program point L468-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,567 INFO L268 CegarLoopResult]: For program point L402(lines 402 413) no Hoare annotation was computed. [2020-07-20 22:06:06,568 INFO L268 CegarLoopResult]: For program point L435-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,568 INFO L268 CegarLoopResult]: For program point L237(lines 237 413) no Hoare annotation was computed. [2020-07-20 22:06:06,568 INFO L268 CegarLoopResult]: For program point L568(line 568) no Hoare annotation was computed. [2020-07-20 22:06:06,568 INFO L268 CegarLoopResult]: For program point L535(line 535) no Hoare annotation was computed. [2020-07-20 22:06:06,568 INFO L268 CegarLoopResult]: For program point L502(line 502) no Hoare annotation was computed. [2020-07-20 22:06:06,568 INFO L268 CegarLoopResult]: For program point L469(line 469) no Hoare annotation was computed. [2020-07-20 22:06:06,568 INFO L268 CegarLoopResult]: For program point L436(line 436) no Hoare annotation was computed. [2020-07-20 22:06:06,568 INFO L268 CegarLoopResult]: For program point L337(lines 337 413) no Hoare annotation was computed. [2020-07-20 22:06:06,569 INFO L268 CegarLoopResult]: For program point L238(lines 238 246) no Hoare annotation was computed. [2020-07-20 22:06:06,569 INFO L268 CegarLoopResult]: For program point L238-2(lines 238 246) no Hoare annotation was computed. [2020-07-20 22:06:06,569 INFO L268 CegarLoopResult]: For program point L139(lines 139 413) no Hoare annotation was computed. [2020-07-20 22:06:06,569 INFO L268 CegarLoopResult]: For program point L106(lines 106 413) no Hoare annotation was computed. [2020-07-20 22:06:06,569 INFO L268 CegarLoopResult]: For program point L404(lines 404 413) no Hoare annotation was computed. [2020-07-20 22:06:06,569 INFO L268 CegarLoopResult]: For program point L338(lines 338 347) no Hoare annotation was computed. [2020-07-20 22:06:06,569 INFO L268 CegarLoopResult]: For program point L338-2(lines 338 347) no Hoare annotation was computed. [2020-07-20 22:06:06,569 INFO L268 CegarLoopResult]: For program point L74(lines 74 413) no Hoare annotation was computed. [2020-07-20 22:06:06,569 INFO L268 CegarLoopResult]: For program point L570-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,570 INFO L268 CegarLoopResult]: For program point L537-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,570 INFO L268 CegarLoopResult]: For program point L504-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,570 INFO L268 CegarLoopResult]: For program point L471-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,570 INFO L268 CegarLoopResult]: For program point L438-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,570 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 484) no Hoare annotation was computed. [2020-07-20 22:06:06,570 INFO L268 CegarLoopResult]: For program point L75(lines 75 80) no Hoare annotation was computed. [2020-07-20 22:06:06,570 INFO L268 CegarLoopResult]: For program point L42(lines 42 413) no Hoare annotation was computed. [2020-07-20 22:06:06,571 INFO L268 CegarLoopResult]: For program point L75-2(lines 75 80) no Hoare annotation was computed. [2020-07-20 22:06:06,571 INFO L268 CegarLoopResult]: For program point L571(line 571) no Hoare annotation was computed. [2020-07-20 22:06:06,571 INFO L268 CegarLoopResult]: For program point L538(line 538) no Hoare annotation was computed. [2020-07-20 22:06:06,571 INFO L268 CegarLoopResult]: For program point L505(line 505) no Hoare annotation was computed. [2020-07-20 22:06:06,571 INFO L268 CegarLoopResult]: For program point L472(line 472) no Hoare annotation was computed. [2020-07-20 22:06:06,571 INFO L268 CegarLoopResult]: For program point L439(line 439) no Hoare annotation was computed. [2020-07-20 22:06:06,571 INFO L268 CegarLoopResult]: For program point L175(lines 175 413) no Hoare annotation was computed. [2020-07-20 22:06:06,571 INFO L268 CegarLoopResult]: For program point L407(lines 407 413) no Hoare annotation was computed. [2020-07-20 22:06:06,572 INFO L268 CegarLoopResult]: For program point L143(lines 143 413) no Hoare annotation was computed. [2020-07-20 22:06:06,572 INFO L268 CegarLoopResult]: For program point L573-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,572 INFO L268 CegarLoopResult]: For program point L540-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,572 INFO L268 CegarLoopResult]: For program point L507-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,572 INFO L268 CegarLoopResult]: For program point L474-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,572 INFO L268 CegarLoopResult]: For program point L441-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,572 INFO L268 CegarLoopResult]: For program point L375(lines 375 413) no Hoare annotation was computed. [2020-07-20 22:06:06,572 INFO L268 CegarLoopResult]: For program point L309(lines 309 413) no Hoare annotation was computed. [2020-07-20 22:06:06,572 INFO L268 CegarLoopResult]: For program point L276(lines 276 413) no Hoare annotation was computed. [2020-07-20 22:06:06,573 INFO L268 CegarLoopResult]: For program point L574(line 574) no Hoare annotation was computed. [2020-07-20 22:06:06,573 INFO L268 CegarLoopResult]: For program point L541(line 541) no Hoare annotation was computed. [2020-07-20 22:06:06,573 INFO L268 CegarLoopResult]: For program point L508(line 508) no Hoare annotation was computed. [2020-07-20 22:06:06,573 INFO L268 CegarLoopResult]: For program point L475(line 475) no Hoare annotation was computed. [2020-07-20 22:06:06,573 INFO L268 CegarLoopResult]: For program point L442(line 442) no Hoare annotation was computed. [2020-07-20 22:06:06,573 INFO L268 CegarLoopResult]: For program point L409(lines 409 413) no Hoare annotation was computed. [2020-07-20 22:06:06,573 INFO L268 CegarLoopResult]: For program point L212(lines 212 413) no Hoare annotation was computed. [2020-07-20 22:06:06,573 INFO L268 CegarLoopResult]: For program point L179(lines 179 413) no Hoare annotation was computed. [2020-07-20 22:06:06,574 INFO L268 CegarLoopResult]: For program point L113(lines 113 413) no Hoare annotation was computed. [2020-07-20 22:06:06,574 INFO L268 CegarLoopResult]: For program point L47(lines 47 413) no Hoare annotation was computed. [2020-07-20 22:06:06,574 INFO L268 CegarLoopResult]: For program point L576-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,574 INFO L268 CegarLoopResult]: For program point L543-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,574 INFO L268 CegarLoopResult]: For program point L510-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,574 INFO L268 CegarLoopResult]: For program point L477-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,574 INFO L268 CegarLoopResult]: For program point L444-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,574 INFO L268 CegarLoopResult]: For program point L378(lines 378 413) no Hoare annotation was computed. [2020-07-20 22:06:06,574 INFO L268 CegarLoopResult]: For program point L577(line 577) no Hoare annotation was computed. [2020-07-20 22:06:06,574 INFO L268 CegarLoopResult]: For program point L544(line 544) no Hoare annotation was computed. [2020-07-20 22:06:06,574 INFO L268 CegarLoopResult]: For program point L511(line 511) no Hoare annotation was computed. [2020-07-20 22:06:06,574 INFO L268 CegarLoopResult]: For program point L478(line 478) no Hoare annotation was computed. [2020-07-20 22:06:06,575 INFO L268 CegarLoopResult]: For program point L445(line 445) no Hoare annotation was computed. [2020-07-20 22:06:06,575 INFO L268 CegarLoopResult]: For program point L280(lines 280 413) no Hoare annotation was computed. [2020-07-20 22:06:06,575 INFO L268 CegarLoopResult]: For program point L148(lines 148 413) no Hoare annotation was computed. [2020-07-20 22:06:06,575 INFO L268 CegarLoopResult]: For program point L82(lines 82 413) no Hoare annotation was computed. [2020-07-20 22:06:06,575 INFO L268 CegarLoopResult]: For program point L380(lines 380 413) no Hoare annotation was computed. [2020-07-20 22:06:06,575 INFO L268 CegarLoopResult]: For program point L314(lines 314 413) no Hoare annotation was computed. [2020-07-20 22:06:06,575 INFO L268 CegarLoopResult]: For program point L248(lines 248 413) no Hoare annotation was computed. [2020-07-20 22:06:06,575 INFO L268 CegarLoopResult]: For program point L215(lines 215 413) no Hoare annotation was computed. [2020-07-20 22:06:06,575 INFO L268 CegarLoopResult]: For program point L83(lines 83 89) no Hoare annotation was computed. [2020-07-20 22:06:06,575 INFO L268 CegarLoopResult]: For program point L50(lines 50 413) no Hoare annotation was computed. [2020-07-20 22:06:06,575 INFO L268 CegarLoopResult]: For program point L83-2(lines 83 89) no Hoare annotation was computed. [2020-07-20 22:06:06,575 INFO L268 CegarLoopResult]: For program point L579-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,575 INFO L268 CegarLoopResult]: For program point L546-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,576 INFO L268 CegarLoopResult]: For program point L513-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,576 INFO L268 CegarLoopResult]: For program point L480-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,576 INFO L268 CegarLoopResult]: For program point L414(lines 414 416) no Hoare annotation was computed. [2020-07-20 22:06:06,576 INFO L268 CegarLoopResult]: For program point L447-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,576 INFO L268 CegarLoopResult]: For program point L381(lines 381 387) no Hoare annotation was computed. [2020-07-20 22:06:06,576 INFO L268 CegarLoopResult]: For program point L414-2(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,576 INFO L268 CegarLoopResult]: For program point L315(lines 315 326) no Hoare annotation was computed. [2020-07-20 22:06:06,576 INFO L268 CegarLoopResult]: For program point L381-2(lines 381 387) no Hoare annotation was computed. [2020-07-20 22:06:06,576 INFO L268 CegarLoopResult]: For program point L315-2(lines 315 326) no Hoare annotation was computed. [2020-07-20 22:06:06,576 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,576 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,576 INFO L268 CegarLoopResult]: For program point L580(line 580) no Hoare annotation was computed. [2020-07-20 22:06:06,576 INFO L268 CegarLoopResult]: For program point L547(line 547) no Hoare annotation was computed. [2020-07-20 22:06:06,576 INFO L268 CegarLoopResult]: For program point L514(line 514) no Hoare annotation was computed. [2020-07-20 22:06:06,577 INFO L268 CegarLoopResult]: For program point L481(line 481) no Hoare annotation was computed. [2020-07-20 22:06:06,577 INFO L268 CegarLoopResult]: For program point L448(line 448) no Hoare annotation was computed. [2020-07-20 22:06:06,577 INFO L268 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-07-20 22:06:06,577 INFO L268 CegarLoopResult]: For program point L349(lines 349 413) no Hoare annotation was computed. [2020-07-20 22:06:06,577 INFO L268 CegarLoopResult]: For program point L283(lines 283 413) no Hoare annotation was computed. [2020-07-20 22:06:06,577 INFO L268 CegarLoopResult]: For program point L218(lines 218 413) no Hoare annotation was computed. [2020-07-20 22:06:06,577 INFO L268 CegarLoopResult]: For program point L185(lines 185 413) no Hoare annotation was computed. [2020-07-20 22:06:06,577 INFO L268 CegarLoopResult]: For program point L119(lines 119 413) no Hoare annotation was computed. [2020-07-20 22:06:06,577 INFO L268 CegarLoopResult]: For program point L582-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,577 INFO L268 CegarLoopResult]: For program point L549-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,577 INFO L268 CegarLoopResult]: For program point L516-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,577 INFO L268 CegarLoopResult]: For program point L483-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,578 INFO L268 CegarLoopResult]: For program point L450-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,578 INFO L268 CegarLoopResult]: For program point L417-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,578 INFO L268 CegarLoopResult]: For program point L54(lines 54 413) no Hoare annotation was computed. [2020-07-20 22:06:06,578 INFO L268 CegarLoopResult]: For program point L583(line 583) no Hoare annotation was computed. [2020-07-20 22:06:06,578 INFO L268 CegarLoopResult]: For program point L550(line 550) no Hoare annotation was computed. [2020-07-20 22:06:06,578 INFO L268 CegarLoopResult]: For program point L517(line 517) no Hoare annotation was computed. [2020-07-20 22:06:06,578 INFO L268 CegarLoopResult]: For program point L484(line 484) no Hoare annotation was computed. [2020-07-20 22:06:06,578 INFO L268 CegarLoopResult]: For program point L451(line 451) no Hoare annotation was computed. [2020-07-20 22:06:06,578 INFO L268 CegarLoopResult]: For program point L418(line 418) no Hoare annotation was computed. [2020-07-20 22:06:06,578 INFO L268 CegarLoopResult]: For program point L286(lines 286 413) no Hoare annotation was computed. [2020-07-20 22:06:06,578 INFO L268 CegarLoopResult]: For program point L253(lines 253 413) no Hoare annotation was computed. [2020-07-20 22:06:06,578 INFO L268 CegarLoopResult]: For program point L187(lines 187 413) no Hoare annotation was computed. [2020-07-20 22:06:06,578 INFO L268 CegarLoopResult]: For program point L154(lines 154 413) no Hoare annotation was computed. [2020-07-20 22:06:06,578 INFO L268 CegarLoopResult]: For program point L585-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,579 INFO L268 CegarLoopResult]: For program point L552-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,579 INFO L268 CegarLoopResult]: For program point L519-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,579 INFO L268 CegarLoopResult]: For program point L486-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,579 INFO L268 CegarLoopResult]: For program point L453-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,579 INFO L268 CegarLoopResult]: For program point L420-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,579 INFO L268 CegarLoopResult]: For program point L354(lines 354 413) no Hoare annotation was computed. [2020-07-20 22:06:06,579 INFO L268 CegarLoopResult]: For program point L189(lines 189 413) no Hoare annotation was computed. [2020-07-20 22:06:06,579 INFO L268 CegarLoopResult]: For program point L123(lines 123 413) no Hoare annotation was computed. [2020-07-20 22:06:06,579 INFO L268 CegarLoopResult]: For program point L586(line 586) no Hoare annotation was computed. [2020-07-20 22:06:06,579 INFO L268 CegarLoopResult]: For program point L553(line 553) no Hoare annotation was computed. [2020-07-20 22:06:06,579 INFO L268 CegarLoopResult]: For program point L520(line 520) no Hoare annotation was computed. [2020-07-20 22:06:06,579 INFO L268 CegarLoopResult]: For program point L487(line 487) no Hoare annotation was computed. [2020-07-20 22:06:06,579 INFO L268 CegarLoopResult]: For program point L454(line 454) no Hoare annotation was computed. [2020-07-20 22:06:06,580 INFO L268 CegarLoopResult]: For program point L421(line 421) no Hoare annotation was computed. [2020-07-20 22:06:06,580 INFO L268 CegarLoopResult]: For program point L223(lines 223 413) no Hoare annotation was computed. [2020-07-20 22:06:06,580 INFO L268 CegarLoopResult]: For program point L91(lines 91 413) no Hoare annotation was computed. [2020-07-20 22:06:06,580 INFO L268 CegarLoopResult]: For program point L389(lines 389 413) no Hoare annotation was computed. [2020-07-20 22:06:06,580 INFO L268 CegarLoopResult]: For program point L191(lines 191 413) no Hoare annotation was computed. [2020-07-20 22:06:06,580 INFO L268 CegarLoopResult]: For program point L59(lines 59 413) no Hoare annotation was computed. [2020-07-20 22:06:06,580 INFO L268 CegarLoopResult]: For program point L588-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,580 INFO L268 CegarLoopResult]: For program point L555-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,580 INFO L268 CegarLoopResult]: For program point L522-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,581 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 29 598) the Hoare annotation is: (let ((.cse0 (<= ~a11~0 0)) (.cse22 (< 0 |old(~a11~0)|))) (let ((.cse6 (not (= 1 |old(~a25~0)|))) (.cse12 (= 1 ~a25~0)) (.cse21 (not (<= |old(~a28~0)| 7))) (.cse14 (<= ~a17~0 8)) (.cse15 (<= 8 ~a17~0)) (.cse23 (not (= 1 ~a11~0))) (.cse20 (or .cse0 .cse22)) (.cse24 (<= ~a28~0 10)) (.cse17 (= 1 |old(~a11~0)|)) (.cse2 (not (<= 8 |old(~a17~0)|))) (.cse3 (not (<= |old(~a17~0)| 8))) (.cse13 (not (= 1 |old(~a19~0)|))) (.cse18 (not (<= 10 |old(~a28~0)|))) (.cse19 (<= 10 ~a28~0)) (.cse1 (not (<= |old(~a28~0)| 10))) (.cse8 (<= ~a17~0 |old(~a17~0)|)) (.cse9 (<= ~a28~0 |old(~a28~0)|)) (.cse10 (= ~a19~0 |old(~a19~0)|)) (.cse11 (<= 9 ~a28~0)) (.cse16 (= ~a25~0 |old(~a25~0)|)) (.cse5 (not (<= 9 |old(~a28~0)|))) (.cse7 (not (<= |old(~a17~0)| 7))) (.cse4 (not (<= |old(~a11~0)| 0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse1 .cse5 .cse6 .cse7 (and .cse8 .cse9 .cse10 .cse11 .cse12)) (or .cse13 .cse1 .cse5 .cse2 (and .cse9 .cse14 .cse15 .cse10 .cse11 .cse16) .cse3) (or .cse1 .cse17 .cse6 .cse18 .cse19 .cse3) (or .cse13 (and .cse8 .cse9 .cse20 .cse10 .cse16) .cse7) (or .cse13 .cse21 (and .cse0 .cse9 .cse10 .cse12) .cse6 .cse4) (or .cse13 .cse17 .cse2 .cse6 .cse18 (and (or (and .cse9 .cse14 .cse15 .cse19 .cse22 .cse10 .cse12) (and .cse0 .cse9 .cse14 .cse15 .cse19 .cse10 .cse12)) .cse23) .cse3) (or .cse21 .cse2 .cse3 (and .cse9 .cse14 .cse15 .cse10 .cse16)) (or .cse1 .cse17 .cse2 .cse3 (and .cse9 .cse14 .cse15 .cse23 .cse10 .cse16)) (or .cse1 .cse7 (and .cse8 .cse24 .cse19 .cse10 .cse16) .cse18) (or .cse13 (and .cse20 .cse24 .cse19 .cse10) .cse1 .cse18) (or .cse1 .cse5 .cse17 .cse2 .cse3 .cse11) (or .cse13 .cse7 .cse18 .cse19) (or .cse1 (and .cse8 .cse0 .cse9 .cse10 .cse11 .cse16) .cse5 .cse7 .cse4)))) [2020-07-20 22:06:06,581 INFO L268 CegarLoopResult]: For program point L489-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,581 INFO L268 CegarLoopResult]: For program point L456-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,581 INFO L268 CegarLoopResult]: For program point L423-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,581 INFO L268 CegarLoopResult]: For program point L291(lines 291 413) no Hoare annotation was computed. [2020-07-20 22:06:06,581 INFO L268 CegarLoopResult]: For program point L225(lines 225 413) no Hoare annotation was computed. [2020-07-20 22:06:06,582 INFO L268 CegarLoopResult]: For program point L159(lines 159 413) no Hoare annotation was computed. [2020-07-20 22:06:06,582 INFO L268 CegarLoopResult]: For program point L589(line 589) no Hoare annotation was computed. [2020-07-20 22:06:06,582 INFO L268 CegarLoopResult]: For program point L556(line 556) no Hoare annotation was computed. [2020-07-20 22:06:06,582 INFO L268 CegarLoopResult]: For program point L523(line 523) no Hoare annotation was computed. [2020-07-20 22:06:06,582 INFO L268 CegarLoopResult]: For program point L490(line 490) no Hoare annotation was computed. [2020-07-20 22:06:06,582 INFO L268 CegarLoopResult]: For program point L457(line 457) no Hoare annotation was computed. [2020-07-20 22:06:06,582 INFO L268 CegarLoopResult]: For program point L424(line 424) no Hoare annotation was computed. [2020-07-20 22:06:06,582 INFO L268 CegarLoopResult]: For program point L259(lines 259 413) no Hoare annotation was computed. [2020-07-20 22:06:06,583 INFO L268 CegarLoopResult]: For program point L293(lines 293 413) no Hoare annotation was computed. [2020-07-20 22:06:06,583 INFO L268 CegarLoopResult]: For program point L194(lines 194 413) no Hoare annotation was computed. [2020-07-20 22:06:06,583 INFO L268 CegarLoopResult]: For program point L95(lines 95 413) no Hoare annotation was computed. [2020-07-20 22:06:06,583 INFO L268 CegarLoopResult]: For program point L591-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,583 INFO L268 CegarLoopResult]: For program point L558-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,583 INFO L268 CegarLoopResult]: For program point L525-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,583 INFO L268 CegarLoopResult]: For program point L492-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,583 INFO L268 CegarLoopResult]: For program point L459-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,584 INFO L268 CegarLoopResult]: For program point L426-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,584 INFO L268 CegarLoopResult]: For program point L261(lines 261 413) no Hoare annotation was computed. [2020-07-20 22:06:06,584 INFO L268 CegarLoopResult]: For program point L30(lines 30 413) no Hoare annotation was computed. [2020-07-20 22:06:06,584 INFO L268 CegarLoopResult]: For program point L592(line 592) no Hoare annotation was computed. [2020-07-20 22:06:06,584 INFO L268 CegarLoopResult]: For program point L559(line 559) no Hoare annotation was computed. [2020-07-20 22:06:06,584 INFO L268 CegarLoopResult]: For program point L526(line 526) no Hoare annotation was computed. [2020-07-20 22:06:06,584 INFO L268 CegarLoopResult]: For program point L493(line 493) no Hoare annotation was computed. [2020-07-20 22:06:06,584 INFO L268 CegarLoopResult]: For program point L460(line 460) no Hoare annotation was computed. [2020-07-20 22:06:06,585 INFO L268 CegarLoopResult]: For program point L427(line 427) no Hoare annotation was computed. [2020-07-20 22:06:06,585 INFO L268 CegarLoopResult]: For program point L394(lines 394 413) no Hoare annotation was computed. [2020-07-20 22:06:06,585 INFO L268 CegarLoopResult]: For program point L361(lines 361 413) no Hoare annotation was computed. [2020-07-20 22:06:06,585 INFO L268 CegarLoopResult]: For program point L328(lines 328 413) no Hoare annotation was computed. [2020-07-20 22:06:06,585 INFO L268 CegarLoopResult]: For program point L262(lines 262 274) no Hoare annotation was computed. [2020-07-20 22:06:06,585 INFO L268 CegarLoopResult]: For program point L262-2(lines 262 274) no Hoare annotation was computed. [2020-07-20 22:06:06,585 INFO L268 CegarLoopResult]: For program point L130(lines 130 413) no Hoare annotation was computed. [2020-07-20 22:06:06,585 INFO L268 CegarLoopResult]: For program point L65(lines 65 413) no Hoare annotation was computed. [2020-07-20 22:06:06,585 INFO L268 CegarLoopResult]: For program point L594-1(lines 594 596) no Hoare annotation was computed. [2020-07-20 22:06:06,586 INFO L268 CegarLoopResult]: For program point L561-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,586 INFO L268 CegarLoopResult]: For program point L528-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,586 INFO L268 CegarLoopResult]: For program point L495-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,586 INFO L268 CegarLoopResult]: For program point L462-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,586 INFO L268 CegarLoopResult]: For program point L429-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 22:06:06,586 INFO L268 CegarLoopResult]: For program point L297(lines 297 413) no Hoare annotation was computed. [2020-07-20 22:06:06,586 INFO L268 CegarLoopResult]: For program point L198(lines 198 413) no Hoare annotation was computed. [2020-07-20 22:06:06,586 INFO L268 CegarLoopResult]: For program point L165(lines 165 413) no Hoare annotation was computed. [2020-07-20 22:06:06,586 INFO L268 CegarLoopResult]: For program point L99(lines 99 413) no Hoare annotation was computed. [2020-07-20 22:06:06,587 INFO L268 CegarLoopResult]: For program point L595(line 595) no Hoare annotation was computed. [2020-07-20 22:06:06,587 INFO L268 CegarLoopResult]: For program point L562(line 562) no Hoare annotation was computed. [2020-07-20 22:06:06,587 INFO L268 CegarLoopResult]: For program point L529(line 529) no Hoare annotation was computed. [2020-07-20 22:06:06,587 INFO L268 CegarLoopResult]: For program point L496(line 496) no Hoare annotation was computed. [2020-07-20 22:06:06,587 INFO L268 CegarLoopResult]: For program point L463(line 463) no Hoare annotation was computed. [2020-07-20 22:06:06,587 INFO L268 CegarLoopResult]: For program point L430(line 430) no Hoare annotation was computed. [2020-07-20 22:06:06,587 INFO L268 CegarLoopResult]: For program point L331(lines 331 413) no Hoare annotation was computed. [2020-07-20 22:06:06,587 INFO L268 CegarLoopResult]: For program point L298(lines 298 307) no Hoare annotation was computed. [2020-07-20 22:06:06,587 INFO L268 CegarLoopResult]: For program point L232(lines 232 413) no Hoare annotation was computed. [2020-07-20 22:06:06,588 INFO L268 CegarLoopResult]: For program point L298-2(lines 298 307) no Hoare annotation was computed. [2020-07-20 22:06:06,588 INFO L268 CegarLoopResult]: For program point L398(lines 398 413) no Hoare annotation was computed. [2020-07-20 22:06:06,588 INFO L268 CegarLoopResult]: For program point L332(lines 332 335) no Hoare annotation was computed. [2020-07-20 22:06:06,588 INFO L268 CegarLoopResult]: For program point L332-2(lines 332 335) no Hoare annotation was computed. [2020-07-20 22:06:06,588 INFO L268 CegarLoopResult]: For program point L134(lines 134 413) no Hoare annotation was computed. [2020-07-20 22:06:06,588 INFO L268 CegarLoopResult]: For program point L35(lines 35 413) no Hoare annotation was computed. [2020-07-20 22:06:06,588 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:06:06,588 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= 1 ~a19~0) (<= ~a11~0 0) (<= ~a17~0 8) (<= ~a28~0 7)) [2020-07-20 22:06:06,589 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 22:06:06,589 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:06:06,589 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 600 617) the Hoare annotation is: (or (not (= 1 |old(~a19~0)|)) (not (<= |old(~a28~0)| 7)) (and (<= ~a17~0 |old(~a17~0)|) (<= ~a11~0 0) (<= ~a28~0 |old(~a28~0)|) (= ~a19~0 |old(~a19~0)|) (= ~a25~0 |old(~a25~0)|)) (not (<= |old(~a17~0)| 8)) (not (<= |old(~a11~0)| 0))) [2020-07-20 22:06:06,589 INFO L264 CegarLoopResult]: At program point L606-2(lines 606 616) the Hoare annotation is: (let ((.cse3 (<= ~a28~0 7)) (.cse4 (= 1 ~a25~0)) (.cse1 (<= ~a11~0 0)) (.cse10 (<= ~a17~0 7)) (.cse11 (< 7 |old(~a17~0)|)) (.cse9 (<= 9 ~a28~0)) (.cse0 (= 1 ~a19~0)) (.cse12 (<= 10 ~a28~0)) (.cse5 (<= ~a17~0 |old(~a17~0)|)) (.cse6 (<= 8 ~a17~0)) (.cse8 (<= ~a28~0 10)) (.cse2 (not (= 1 |old(~a25~0)|))) (.cse7 (not (= 1 ~a11~0)))) (or (not (= 1 |old(~a19~0)|)) (not (<= |old(~a28~0)| 7)) (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse5 .cse6 .cse2 .cse7 .cse4) (and .cse0 .cse5 .cse1 (= ~a25~0 |old(~a25~0)|) .cse3) (and .cse0 .cse5 .cse6 .cse8 .cse2 .cse9) (and .cse5 .cse6 .cse2 .cse3) (and .cse0 .cse2 .cse10 .cse11) (and .cse8 .cse2 .cse10 .cse11 .cse9 .cse4) (not (<= |old(~a11~0)| 0)) (and .cse8 .cse2 .cse10 .cse12 .cse11) (and .cse1 .cse8 .cse2 .cse10 .cse11 .cse9) (not (<= |old(~a17~0)| 8)) (and .cse0 .cse8 .cse12) (and .cse5 .cse6 .cse8 .cse2 .cse7))) [2020-07-20 22:06:06,589 INFO L268 CegarLoopResult]: For program point L606-3(lines 600 617) no Hoare annotation was computed. [2020-07-20 22:06:06,589 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 600 617) no Hoare annotation was computed. [2020-07-20 22:06:06,590 INFO L264 CegarLoopResult]: At program point L614(line 614) the Hoare annotation is: (let ((.cse3 (<= ~a28~0 7)) (.cse4 (= 1 ~a25~0)) (.cse1 (<= ~a11~0 0)) (.cse10 (<= ~a17~0 7)) (.cse11 (< 7 |old(~a17~0)|)) (.cse9 (<= 9 ~a28~0)) (.cse0 (= 1 ~a19~0)) (.cse12 (<= 10 ~a28~0)) (.cse5 (<= ~a17~0 |old(~a17~0)|)) (.cse6 (<= 8 ~a17~0)) (.cse8 (<= ~a28~0 10)) (.cse2 (not (= 1 |old(~a25~0)|))) (.cse7 (not (= 1 ~a11~0)))) (or (not (= 1 |old(~a19~0)|)) (not (<= |old(~a28~0)| 7)) (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse5 .cse6 .cse2 .cse7 .cse4) (and .cse0 .cse5 .cse1 (= ~a25~0 |old(~a25~0)|) .cse3) (and .cse0 .cse5 .cse6 .cse8 .cse2 .cse9) (and .cse5 .cse6 .cse2 .cse3) (and .cse0 .cse2 .cse10 .cse11) (and .cse8 .cse2 .cse10 .cse11 .cse9 .cse4) (not (<= |old(~a11~0)| 0)) (and .cse8 .cse2 .cse10 .cse12 .cse11) (and .cse1 .cse8 .cse2 .cse10 .cse11 .cse9) (not (<= |old(~a17~0)| 8)) (and .cse0 .cse8 .cse12) (and .cse5 .cse6 .cse8 .cse2 .cse7))) [2020-07-20 22:06:06,590 INFO L268 CegarLoopResult]: For program point L614-1(line 614) no Hoare annotation was computed. [2020-07-20 22:06:06,590 INFO L268 CegarLoopResult]: For program point L611(line 611) no Hoare annotation was computed. [2020-07-20 22:06:06,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:06:06 BoogieIcfgContainer [2020-07-20 22:06:06,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 22:06:06,617 INFO L168 Benchmark]: Toolchain (without parser) took 19055.15 ms. Allocated memory was 137.4 MB in the beginning and 549.5 MB in the end (delta: 412.1 MB). Free memory was 98.9 MB in the beginning and 440.7 MB in the end (delta: -341.9 MB). Peak memory consumption was 433.4 MB. Max. memory is 7.1 GB. [2020-07-20 22:06:06,618 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 22:06:06,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 789.16 ms. Allocated memory was 137.4 MB in the beginning and 203.4 MB in the end (delta: 66.1 MB). Free memory was 98.4 MB in the beginning and 170.3 MB in the end (delta: -71.9 MB). Peak memory consumption was 33.7 MB. Max. memory is 7.1 GB. [2020-07-20 22:06:06,619 INFO L168 Benchmark]: Boogie Preprocessor took 139.23 ms. Allocated memory is still 203.4 MB. Free memory was 170.3 MB in the beginning and 165.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-07-20 22:06:06,620 INFO L168 Benchmark]: RCFGBuilder took 1288.39 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 165.4 MB in the beginning and 180.2 MB in the end (delta: -14.8 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. [2020-07-20 22:06:06,621 INFO L168 Benchmark]: TraceAbstraction took 16831.86 ms. Allocated memory was 234.4 MB in the beginning and 549.5 MB in the end (delta: 315.1 MB). Free memory was 180.2 MB in the beginning and 440.7 MB in the end (delta: -260.5 MB). Peak memory consumption was 417.8 MB. Max. memory is 7.1 GB. [2020-07-20 22:06:06,625 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 789.16 ms. Allocated memory was 137.4 MB in the beginning and 203.4 MB in the end (delta: 66.1 MB). Free memory was 98.4 MB in the beginning and 170.3 MB in the end (delta: -71.9 MB). Peak memory consumption was 33.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.23 ms. Allocated memory is still 203.4 MB. Free memory was 170.3 MB in the beginning and 165.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1288.39 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 165.4 MB in the beginning and 180.2 MB in the end (delta: -14.8 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16831.86 ms. Allocated memory was 234.4 MB in the beginning and 549.5 MB in the end (delta: 315.1 MB). Free memory was 180.2 MB in the beginning and 440.7 MB in the end (delta: -260.5 MB). Peak memory consumption was 417.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 484]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 606]: Loop Invariant Derived loop invariant: (((((((((((((!(1 == \old(a19)) || !(\old(a28) <= 7)) || ((((1 == a19 && a11 <= 0) && !(1 == \old(a25))) && a28 <= 7) && 1 == a25)) || (((((1 == a19 && a17 <= \old(a17)) && 8 <= a17) && !(1 == \old(a25))) && !(1 == a11)) && 1 == a25)) || ((((1 == a19 && a17 <= \old(a17)) && a11 <= 0) && a25 == \old(a25)) && a28 <= 7)) || (((((1 == a19 && a17 <= \old(a17)) && 8 <= a17) && a28 <= 10) && !(1 == \old(a25))) && 9 <= a28)) || (((a17 <= \old(a17) && 8 <= a17) && !(1 == \old(a25))) && a28 <= 7)) || (((1 == a19 && !(1 == \old(a25))) && a17 <= 7) && 7 < \old(a17))) || (((((a28 <= 10 && !(1 == \old(a25))) && a17 <= 7) && 7 < \old(a17)) && 9 <= a28) && 1 == a25)) || !(\old(a11) <= 0)) || ((((a28 <= 10 && !(1 == \old(a25))) && a17 <= 7) && 10 <= a28) && 7 < \old(a17))) || (((((a11 <= 0 && a28 <= 10) && !(1 == \old(a25))) && a17 <= 7) && 7 < \old(a17)) && 9 <= a28)) || !(\old(a17) <= 8)) || ((1 == a19 && a28 <= 10) && 10 <= a28)) || ((((a17 <= \old(a17) && 8 <= a17) && a28 <= 10) && !(1 == \old(a25))) && !(1 == a11)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 236 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.1s, OverallIterations: 10, TraceHistogramMax: 7, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 969 SDtfs, 4022 SDslu, 472 SDs, 0 SdLazy, 5878 SolverSat, 994 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2606 GetRequests, 2560 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4403occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 10 MinimizatonAttempts, 199 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 153 PreInvPairs, 223 NumberOfFragments, 924 HoareAnnotationTreeSize, 153 FomulaSimplifications, 1818 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 7 FomulaSimplificationsInter, 2151 FormulaSimplificationTreeSizeReductionInter, 2.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 1674 NumberOfCodeBlocks, 1674 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 2584 ConstructedInterpolants, 0 QuantifiedInterpolants, 819159 SizeOfPredicates, 13 NumberOfNonLiveVariables, 4472 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 1642/1746 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...