java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 15:27:48,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 15:27:48,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 15:27:48,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 15:27:48,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 15:27:48,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 15:27:48,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 15:27:48,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 15:27:48,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 15:27:48,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 15:27:48,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 15:27:48,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 15:27:48,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 15:27:48,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 15:27:48,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 15:27:48,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 15:27:48,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 15:27:48,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 15:27:48,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 15:27:48,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 15:27:48,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 15:27:48,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 15:27:48,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 15:27:48,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 15:27:48,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 15:27:48,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 15:27:48,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 15:27:48,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 15:27:48,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 15:27:48,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 15:27:48,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 15:27:48,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 15:27:48,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 15:27:48,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 15:27:48,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 15:27:48,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 15:27:48,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 15:27:48,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 15:27:48,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 15:27:48,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 15:27:48,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 15:27:48,661 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-07 15:27:48,675 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 15:27:48,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 15:27:48,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 15:27:48,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 15:27:48,677 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 15:27:48,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 15:27:48,677 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 15:27:48,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 15:27:48,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 15:27:48,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 15:27:48,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 15:27:48,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 15:27:48,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 15:27:48,678 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 15:27:48,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 15:27:48,679 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 15:27:48,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 15:27:48,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 15:27:48,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 15:27:48,680 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 15:27:48,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 15:27:48,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 15:27:48,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 15:27:48,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 15:27:48,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 15:27:48,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 15:27:48,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 15:27:48,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 15:27:48,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 15:27:48,709 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 15:27:48,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 15:27:48,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 15:27:48,726 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 15:27:48,726 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 15:27:48,727 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label52.c [2019-09-07 15:27:48,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/275ee480d/4a4dd44459c14017a508fec16ce8b14d/FLAGf9c3c39dc [2019-09-07 15:27:49,720 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 15:27:49,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem06_label52.c [2019-09-07 15:27:49,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/275ee480d/4a4dd44459c14017a508fec16ce8b14d/FLAGf9c3c39dc [2019-09-07 15:27:50,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/275ee480d/4a4dd44459c14017a508fec16ce8b14d [2019-09-07 15:27:50,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 15:27:50,093 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 15:27:50,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 15:27:50,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 15:27:50,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 15:27:50,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 03:27:50" (1/1) ... [2019-09-07 15:27:50,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19cbc9c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:27:50, skipping insertion in model container [2019-09-07 15:27:50,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 03:27:50" (1/1) ... [2019-09-07 15:27:50,113 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 15:27:50,307 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 15:27:52,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 15:27:52,662 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 15:27:53,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 15:27:53,898 INFO L192 MainTranslator]: Completed translation [2019-09-07 15:27:53,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:27:53 WrapperNode [2019-09-07 15:27:53,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 15:27:53,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 15:27:53,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 15:27:53,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 15:27:53,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:27:53" (1/1) ... [2019-09-07 15:27:53,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:27:53" (1/1) ... [2019-09-07 15:27:54,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:27:53" (1/1) ... [2019-09-07 15:27:54,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:27:53" (1/1) ... [2019-09-07 15:27:54,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:27:53" (1/1) ... [2019-09-07 15:27:54,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:27:53" (1/1) ... [2019-09-07 15:27:54,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:27:53" (1/1) ... [2019-09-07 15:27:54,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 15:27:54,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 15:27:54,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 15:27:54,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 15:27:54,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:27:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 15:27:54,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 15:27:54,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 15:27:54,547 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 15:27:54,547 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 15:27:54,547 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 15:27:54,547 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 15:27:54,547 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-07 15:27:54,548 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 15:27:54,548 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 15:27:54,548 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 15:27:54,548 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 15:27:54,549 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 15:27:54,549 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-07 15:27:54,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 15:27:54,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 15:27:54,551 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 15:27:54,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 15:27:54,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 15:27:54,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 15:28:01,602 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 15:28:01,603 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 15:28:01,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 03:28:01 BoogieIcfgContainer [2019-09-07 15:28:01,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 15:28:01,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 15:28:01,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 15:28:01,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 15:28:01,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 03:27:50" (1/3) ... [2019-09-07 15:28:01,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35376a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 03:28:01, skipping insertion in model container [2019-09-07 15:28:01,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:27:53" (2/3) ... [2019-09-07 15:28:01,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35376a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 03:28:01, skipping insertion in model container [2019-09-07 15:28:01,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 03:28:01" (3/3) ... [2019-09-07 15:28:01,617 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label52.c [2019-09-07 15:28:01,632 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 15:28:01,643 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 15:28:01,660 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 15:28:01,705 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 15:28:01,706 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 15:28:01,706 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 15:28:01,706 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 15:28:01,706 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 15:28:01,706 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 15:28:01,706 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 15:28:01,706 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 15:28:01,707 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 15:28:01,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2019-09-07 15:28:01,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2019-09-07 15:28:01,793 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:28:01,795 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 15:28:01,797 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:28:01,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:28:01,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1969095729, now seen corresponding path program 1 times [2019-09-07 15:28:01,806 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:28:01,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:28:01,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:28:01,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:28:01,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:28:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:28:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 15:28:04,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 15:28:04,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 15:28:04,748 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 15:28:04,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 15:28:04,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 15:28:04,765 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 3 states. [2019-09-07 15:28:10,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:28:10,950 INFO L93 Difference]: Finished difference Result 3744 states and 6993 transitions. [2019-09-07 15:28:10,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 15:28:10,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 998 [2019-09-07 15:28:10,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:28:10,993 INFO L225 Difference]: With dead ends: 3744 [2019-09-07 15:28:10,994 INFO L226 Difference]: Without dead ends: 2367 [2019-09-07 15:28:11,003 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 15:28:11,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2019-09-07 15:28:11,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2345. [2019-09-07 15:28:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2345 states. [2019-09-07 15:28:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 4101 transitions. [2019-09-07 15:28:11,174 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 4101 transitions. Word has length 998 [2019-09-07 15:28:11,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:28:11,177 INFO L475 AbstractCegarLoop]: Abstraction has 2345 states and 4101 transitions. [2019-09-07 15:28:11,177 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 15:28:11,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 4101 transitions. [2019-09-07 15:28:11,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2019-09-07 15:28:11,221 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:28:11,222 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 15:28:11,223 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:28:11,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:28:11,224 INFO L82 PathProgramCache]: Analyzing trace with hash -970254150, now seen corresponding path program 1 times [2019-09-07 15:28:11,224 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:28:11,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:28:11,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:28:11,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:28:11,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:28:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:28:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 15:28:12,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 15:28:12,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 15:28:12,239 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 15:28:12,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 15:28:12,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 15:28:12,240 INFO L87 Difference]: Start difference. First operand 2345 states and 4101 transitions. Second operand 5 states. [2019-09-07 15:28:20,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:28:20,203 INFO L93 Difference]: Finished difference Result 6897 states and 12205 transitions. [2019-09-07 15:28:20,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 15:28:20,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1006 [2019-09-07 15:28:20,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:28:20,234 INFO L225 Difference]: With dead ends: 6897 [2019-09-07 15:28:20,234 INFO L226 Difference]: Without dead ends: 4558 [2019-09-07 15:28:20,241 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 15:28:20,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4558 states. [2019-09-07 15:28:20,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4558 to 4465. [2019-09-07 15:28:20,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4465 states. [2019-09-07 15:28:20,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4465 states to 4465 states and 7429 transitions. [2019-09-07 15:28:20,384 INFO L78 Accepts]: Start accepts. Automaton has 4465 states and 7429 transitions. Word has length 1006 [2019-09-07 15:28:20,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:28:20,385 INFO L475 AbstractCegarLoop]: Abstraction has 4465 states and 7429 transitions. [2019-09-07 15:28:20,385 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 15:28:20,385 INFO L276 IsEmpty]: Start isEmpty. Operand 4465 states and 7429 transitions. [2019-09-07 15:28:20,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1012 [2019-09-07 15:28:20,409 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:28:20,410 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 15:28:20,410 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:28:20,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:28:20,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1579348608, now seen corresponding path program 1 times [2019-09-07 15:28:20,412 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:28:20,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:28:20,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:28:20,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:28:20,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:28:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:28:22,106 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 15:28:22,106 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 15:28:22,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 15:28:22,108 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 15:28:22,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 15:28:22,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 15:28:22,109 INFO L87 Difference]: Start difference. First operand 4465 states and 7429 transitions. Second operand 4 states. [2019-09-07 15:28:29,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:28:29,824 INFO L93 Difference]: Finished difference Result 11046 states and 18324 transitions. [2019-09-07 15:28:29,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 15:28:29,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1011 [2019-09-07 15:28:29,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:28:29,865 INFO L225 Difference]: With dead ends: 11046 [2019-09-07 15:28:29,865 INFO L226 Difference]: Without dead ends: 6587 [2019-09-07 15:28:29,875 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 15:28:29,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6587 states. [2019-09-07 15:28:30,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6587 to 6547. [2019-09-07 15:28:30,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6547 states. [2019-09-07 15:28:30,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6547 states to 6547 states and 10237 transitions. [2019-09-07 15:28:30,031 INFO L78 Accepts]: Start accepts. Automaton has 6547 states and 10237 transitions. Word has length 1011 [2019-09-07 15:28:30,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:28:30,033 INFO L475 AbstractCegarLoop]: Abstraction has 6547 states and 10237 transitions. [2019-09-07 15:28:30,033 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 15:28:30,034 INFO L276 IsEmpty]: Start isEmpty. Operand 6547 states and 10237 transitions. [2019-09-07 15:28:30,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1019 [2019-09-07 15:28:30,067 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:28:30,067 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 15:28:30,068 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:28:30,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:28:30,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1306720541, now seen corresponding path program 1 times [2019-09-07 15:28:30,069 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:28:30,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:28:30,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:28:30,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:28:30,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:28:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:28:31,193 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 15:28:31,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 15:28:31,194 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 15:28:31,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:28:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:28:31,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 2348 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 15:28:31,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 15:28:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 15:28:32,640 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 15:28:32,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2019-09-07 15:28:32,643 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 15:28:32,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 15:28:32,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-09-07 15:28:32,644 INFO L87 Difference]: Start difference. First operand 6547 states and 10237 transitions. Second operand 12 states. [2019-09-07 15:29:11,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:29:11,198 INFO L93 Difference]: Finished difference Result 64504 states and 118894 transitions. [2019-09-07 15:29:11,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-09-07 15:29:11,199 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1018 [2019-09-07 15:29:11,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:29:11,686 INFO L225 Difference]: With dead ends: 64504 [2019-09-07 15:29:11,686 INFO L226 Difference]: Without dead ends: 57963 [2019-09-07 15:29:11,740 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1107 GetRequests, 1056 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=545, Invalid=2211, Unknown=0, NotChecked=0, Total=2756 [2019-09-07 15:29:11,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57963 states. [2019-09-07 15:29:13,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57963 to 57709. [2019-09-07 15:29:13,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57709 states. [2019-09-07 15:29:13,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57709 states to 57709 states and 95460 transitions. [2019-09-07 15:29:13,627 INFO L78 Accepts]: Start accepts. Automaton has 57709 states and 95460 transitions. Word has length 1018 [2019-09-07 15:29:13,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:29:13,627 INFO L475 AbstractCegarLoop]: Abstraction has 57709 states and 95460 transitions. [2019-09-07 15:29:13,627 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 15:29:13,628 INFO L276 IsEmpty]: Start isEmpty. Operand 57709 states and 95460 transitions. [2019-09-07 15:29:13,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2019-09-07 15:29:13,889 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:29:13,890 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 15:29:13,890 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:29:13,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:29:13,891 INFO L82 PathProgramCache]: Analyzing trace with hash -786817868, now seen corresponding path program 1 times [2019-09-07 15:29:13,891 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:29:13,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:29:13,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:29:13,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:29:13,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:29:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:29:16,140 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 15:29:16,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 15:29:16,141 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 15:29:16,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 15:29:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:29:16,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 2349 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 15:29:16,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 15:29:17,435 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 15:29:17,442 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 15:29:17,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 15:29:17,445 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 15:29:17,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 15:29:17,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 15:29:17,446 INFO L87 Difference]: Start difference. First operand 57709 states and 95460 transitions. Second operand 9 states. [2019-09-07 15:29:39,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:29:39,933 INFO L93 Difference]: Finished difference Result 295665 states and 762401 transitions. [2019-09-07 15:29:39,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-09-07 15:29:39,934 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1043 [2019-09-07 15:29:39,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:29:43,110 INFO L225 Difference]: With dead ends: 295665 [2019-09-07 15:29:43,110 INFO L226 Difference]: Without dead ends: 237962 [2019-09-07 15:29:47,950 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1094 GetRequests, 1050 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=391, Invalid=1679, Unknown=0, NotChecked=0, Total=2070 [2019-09-07 15:29:48,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237962 states. [2019-09-07 15:29:55,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237962 to 234699. [2019-09-07 15:29:55,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234699 states. [2019-09-07 15:30:02,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234699 states to 234699 states and 486923 transitions. [2019-09-07 15:30:02,987 INFO L78 Accepts]: Start accepts. Automaton has 234699 states and 486923 transitions. Word has length 1043 [2019-09-07 15:30:02,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:30:02,988 INFO L475 AbstractCegarLoop]: Abstraction has 234699 states and 486923 transitions. [2019-09-07 15:30:02,988 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 15:30:02,988 INFO L276 IsEmpty]: Start isEmpty. Operand 234699 states and 486923 transitions. [2019-09-07 15:30:04,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1076 [2019-09-07 15:30:04,120 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:30:04,120 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 15:30:04,121 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:30:04,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:30:04,122 INFO L82 PathProgramCache]: Analyzing trace with hash 976012930, now seen corresponding path program 1 times [2019-09-07 15:30:04,122 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:30:04,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:30:04,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:30:04,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:30:04,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:30:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:30:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 80 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-07 15:30:06,668 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 15:30:06,668 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 15:30:06,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:30:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:30:07,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 2552 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 15:30:07,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 15:30:09,048 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-07 15:30:09,064 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 15:30:09,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 15:30:09,068 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 15:30:09,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 15:30:09,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 15:30:09,069 INFO L87 Difference]: Start difference. First operand 234699 states and 486923 transitions. Second operand 9 states. [2019-09-07 15:30:59,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:30:59,180 INFO L93 Difference]: Finished difference Result 682052 states and 2183138 transitions. [2019-09-07 15:30:59,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-09-07 15:30:59,181 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1075 [2019-09-07 15:30:59,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:31:13,401 INFO L225 Difference]: With dead ends: 682052 [2019-09-07 15:31:13,402 INFO L226 Difference]: Without dead ends: 447359 [2019-09-07 15:31:20,812 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1143 GetRequests, 1103 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=1371, Unknown=0, NotChecked=0, Total=1722 [2019-09-07 15:31:21,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447359 states. [2019-09-07 15:31:37,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447359 to 434691. [2019-09-07 15:31:37,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434691 states. [2019-09-07 15:31:40,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434691 states to 434691 states and 829626 transitions. [2019-09-07 15:31:40,605 INFO L78 Accepts]: Start accepts. Automaton has 434691 states and 829626 transitions. Word has length 1075 [2019-09-07 15:31:40,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:31:40,605 INFO L475 AbstractCegarLoop]: Abstraction has 434691 states and 829626 transitions. [2019-09-07 15:31:40,605 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 15:31:40,605 INFO L276 IsEmpty]: Start isEmpty. Operand 434691 states and 829626 transitions. [2019-09-07 15:31:51,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1085 [2019-09-07 15:31:51,451 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:31:51,452 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 15:31:51,452 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:31:51,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:31:51,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1234710746, now seen corresponding path program 1 times [2019-09-07 15:31:51,453 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:31:51,453 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:31:51,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:31:51,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:31:51,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:31:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:31:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 102 proven. 45 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-09-07 15:31:53,267 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 15:31:53,267 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 15:31:53,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:31:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:31:53,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 15:31:53,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 15:31:54,707 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-09-07 15:31:54,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 15:31:54,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 15:31:54,715 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 15:31:54,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 15:31:54,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-07 15:31:54,716 INFO L87 Difference]: Start difference. First operand 434691 states and 829626 transitions. Second operand 7 states. [2019-09-07 15:32:20,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:32:20,454 INFO L93 Difference]: Finished difference Result 917854 states and 1865378 transitions. [2019-09-07 15:32:20,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 15:32:20,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1084 [2019-09-07 15:32:20,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:32:22,865 INFO L225 Difference]: With dead ends: 917854 [2019-09-07 15:32:22,865 INFO L226 Difference]: Without dead ends: 483169 [2019-09-07 15:32:33,818 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1109 GetRequests, 1095 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2019-09-07 15:32:34,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483169 states. [2019-09-07 15:32:44,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483169 to 481136. [2019-09-07 15:32:44,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481136 states. [2019-09-07 15:33:00,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481136 states to 481136 states and 828495 transitions. [2019-09-07 15:33:00,717 INFO L78 Accepts]: Start accepts. Automaton has 481136 states and 828495 transitions. Word has length 1084 [2019-09-07 15:33:00,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:33:00,717 INFO L475 AbstractCegarLoop]: Abstraction has 481136 states and 828495 transitions. [2019-09-07 15:33:00,717 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 15:33:00,718 INFO L276 IsEmpty]: Start isEmpty. Operand 481136 states and 828495 transitions. [2019-09-07 15:33:01,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1124 [2019-09-07 15:33:01,981 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:33:01,982 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 15:33:01,982 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:33:01,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:33:01,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1148885712, now seen corresponding path program 1 times [2019-09-07 15:33:01,983 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:33:01,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:33:01,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:33:01,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:33:01,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:33:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:33:10,258 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 170 proven. 28 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-09-07 15:33:10,258 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 15:33:10,258 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 15:33:10,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:33:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:33:10,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 2885 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 15:33:10,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 15:33:11,806 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (6)] Exception during sending of exit command (exit): Stream closed [2019-09-07 15:33:11,814 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 15:33:11,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 15:33:11,817 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 15:33:11,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 15:33:11,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 15:33:11,818 INFO L87 Difference]: Start difference. First operand 481136 states and 828495 transitions. Second operand 9 states. [2019-09-07 15:33:38,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:33:38,830 INFO L93 Difference]: Finished difference Result 1083747 states and 1991218 transitions. [2019-09-07 15:33:38,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-07 15:33:38,830 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1123 [2019-09-07 15:33:38,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:33:43,441 INFO L225 Difference]: With dead ends: 1083747 [2019-09-07 15:33:43,442 INFO L226 Difference]: Without dead ends: 602617 [2019-09-07 15:33:55,357 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1152 GetRequests, 1133 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2019-09-07 15:33:55,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602617 states. [2019-09-07 15:34:08,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602617 to 598543. [2019-09-07 15:34:08,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598543 states. [2019-09-07 15:34:25,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598543 states to 598543 states and 977554 transitions. [2019-09-07 15:34:25,606 INFO L78 Accepts]: Start accepts. Automaton has 598543 states and 977554 transitions. Word has length 1123 [2019-09-07 15:34:25,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:34:25,607 INFO L475 AbstractCegarLoop]: Abstraction has 598543 states and 977554 transitions. [2019-09-07 15:34:25,607 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 15:34:25,607 INFO L276 IsEmpty]: Start isEmpty. Operand 598543 states and 977554 transitions. [2019-09-07 15:34:29,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1271 [2019-09-07 15:34:29,674 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:34:29,675 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 15:34:29,675 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:34:29,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:34:29,676 INFO L82 PathProgramCache]: Analyzing trace with hash -493012843, now seen corresponding path program 1 times [2019-09-07 15:34:29,676 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:34:29,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:34:29,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:34:29,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:34:29,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:34:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:34:38,385 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 270 proven. 125 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-07 15:34:38,385 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 15:34:38,385 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 15:34:38,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 15:34:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:34:38,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 15:34:38,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 15:34:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-09-07 15:34:39,631 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 15:34:39,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-09-07 15:34:39,633 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 15:34:39,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 15:34:39,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-09-07 15:34:39,634 INFO L87 Difference]: Start difference. First operand 598543 states and 977554 transitions. Second operand 13 states.