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/Problem15_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 20:14:49,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 20:14:49,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 20:14:49,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 20:14:49,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 20:14:49,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 20:14:49,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 20:14:50,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 20:14:50,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 20:14:50,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 20:14:50,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 20:14:50,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 20:14:50,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 20:14:50,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 20:14:50,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 20:14:50,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 20:14:50,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 20:14:50,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 20:14:50,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 20:14:50,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 20:14:50,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 20:14:50,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 20:14:50,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 20:14:50,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 20:14:50,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 20:14:50,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 20:14:50,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 20:14:50,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 20:14:50,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 20:14:50,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 20:14:50,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 20:14:50,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 20:14:50,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 20:14:50,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 20:14:50,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 20:14:50,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 20:14:50,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 20:14:50,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 20:14:50,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 20:14:50,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 20:14:50,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 20:14:50,050 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 20:14:50,063 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 20:14:50,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 20:14:50,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 20:14:50,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 20:14:50,065 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 20:14:50,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 20:14:50,066 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 20:14:50,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 20:14:50,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 20:14:50,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 20:14:50,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 20:14:50,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 20:14:50,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 20:14:50,067 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 20:14:50,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 20:14:50,069 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 20:14:50,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 20:14:50,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 20:14:50,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 20:14:50,070 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 20:14:50,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 20:14:50,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 20:14:50,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 20:14:50,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 20:14:50,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 20:14:50,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 20:14:50,072 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 20:14:50,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 20:14:50,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 20:14:50,121 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 20:14:50,132 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 20:14:50,136 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 20:14:50,138 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 20:14:50,138 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 20:14:50,139 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label05.c [2019-09-07 20:14:50,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/988d07a39/db60f1dde60c41f096aa8aa437ad18b5/FLAG30dc45896 [2019-09-07 20:14:50,838 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 20:14:50,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label05.c [2019-09-07 20:14:50,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/988d07a39/db60f1dde60c41f096aa8aa437ad18b5/FLAG30dc45896 [2019-09-07 20:14:51,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/988d07a39/db60f1dde60c41f096aa8aa437ad18b5 [2019-09-07 20:14:51,112 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 20:14:51,114 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 20:14:51,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 20:14:51,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 20:14:51,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 20:14:51,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 08:14:51" (1/1) ... [2019-09-07 20:14:51,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65827987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:14:51, skipping insertion in model container [2019-09-07 20:14:51,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 08:14:51" (1/1) ... [2019-09-07 20:14:51,130 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 20:14:51,219 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 20:14:52,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 20:14:52,201 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 20:14:52,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 20:14:52,556 INFO L192 MainTranslator]: Completed translation [2019-09-07 20:14:52,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:14:52 WrapperNode [2019-09-07 20:14:52,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 20:14:52,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 20:14:52,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 20:14:52,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 20:14:52,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:14:52" (1/1) ... [2019-09-07 20:14:52,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:14:52" (1/1) ... [2019-09-07 20:14:52,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:14:52" (1/1) ... [2019-09-07 20:14:52,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:14:52" (1/1) ... [2019-09-07 20:14:52,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:14:52" (1/1) ... [2019-09-07 20:14:52,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:14:52" (1/1) ... [2019-09-07 20:14:52,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:14:52" (1/1) ... [2019-09-07 20:14:52,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 20:14:52,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 20:14:52,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 20:14:52,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 20:14:52,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:14:52" (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 20:14:52,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 20:14:52,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 20:14:52,845 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 20:14:52,846 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 20:14:52,846 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 20:14:52,846 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 20:14:52,847 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 20:14:52,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 20:14:52,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 20:14:52,847 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 20:14:52,848 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 20:14:52,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 20:14:52,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 20:14:55,986 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 20:14:55,986 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 20:14:55,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 08:14:55 BoogieIcfgContainer [2019-09-07 20:14:55,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 20:14:55,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 20:14:55,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 20:14:55,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 20:14:55,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 08:14:51" (1/3) ... [2019-09-07 20:14:55,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6cc5ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 08:14:55, skipping insertion in model container [2019-09-07 20:14:55,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:14:52" (2/3) ... [2019-09-07 20:14:55,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6cc5ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 08:14:55, skipping insertion in model container [2019-09-07 20:14:55,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 08:14:55" (3/3) ... [2019-09-07 20:14:56,004 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label05.c [2019-09-07 20:14:56,015 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 20:14:56,022 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 20:14:56,038 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 20:14:56,079 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 20:14:56,080 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 20:14:56,080 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 20:14:56,080 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 20:14:56,080 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 20:14:56,080 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 20:14:56,081 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 20:14:56,081 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 20:14:56,081 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 20:14:56,123 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2019-09-07 20:14:56,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-07 20:14:56,136 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:14:56,138 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] [2019-09-07 20:14:56,140 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:14:56,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:14:56,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1317057632, now seen corresponding path program 1 times [2019-09-07 20:14:56,146 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:14:56,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:14:56,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:14:56,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:14:56,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:14:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:14:56,582 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 20:14:56,584 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 20:14:56,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 20:14:56,589 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 20:14:56,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 20:14:56,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 20:14:56,606 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2019-09-07 20:15:02,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:15:02,199 INFO L93 Difference]: Finished difference Result 1510 states and 2773 transitions. [2019-09-07 20:15:02,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 20:15:02,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2019-09-07 20:15:02,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:15:02,226 INFO L225 Difference]: With dead ends: 1510 [2019-09-07 20:15:02,227 INFO L226 Difference]: Without dead ends: 1006 [2019-09-07 20:15:02,238 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 20:15:02,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2019-09-07 20:15:02,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 1004. [2019-09-07 20:15:02,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1004 states. [2019-09-07 20:15:02,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1509 transitions. [2019-09-07 20:15:02,357 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1509 transitions. Word has length 70 [2019-09-07 20:15:02,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:15:02,357 INFO L475 AbstractCegarLoop]: Abstraction has 1004 states and 1509 transitions. [2019-09-07 20:15:02,358 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 20:15:02,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1509 transitions. [2019-09-07 20:15:02,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-09-07 20:15:02,365 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:15:02,365 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 20:15:02,366 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:15:02,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:15:02,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1905584676, now seen corresponding path program 1 times [2019-09-07 20:15:02,367 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:15:02,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:15:02,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:15:02,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:15:02,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:15:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:15:02,570 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 20:15:02,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 20:15:02,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 20:15:02,572 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 20:15:02,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 20:15:02,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 20:15:02,573 INFO L87 Difference]: Start difference. First operand 1004 states and 1509 transitions. Second operand 4 states. [2019-09-07 20:15:06,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:15:06,074 INFO L93 Difference]: Finished difference Result 3854 states and 5903 transitions. [2019-09-07 20:15:06,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 20:15:06,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2019-09-07 20:15:06,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:15:06,096 INFO L225 Difference]: With dead ends: 3854 [2019-09-07 20:15:06,096 INFO L226 Difference]: Without dead ends: 2856 [2019-09-07 20:15:06,100 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 20:15:06,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2019-09-07 20:15:06,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2544. [2019-09-07 20:15:06,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2544 states. [2019-09-07 20:15:06,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2544 states to 2544 states and 3555 transitions. [2019-09-07 20:15:06,183 INFO L78 Accepts]: Start accepts. Automaton has 2544 states and 3555 transitions. Word has length 139 [2019-09-07 20:15:06,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:15:06,183 INFO L475 AbstractCegarLoop]: Abstraction has 2544 states and 3555 transitions. [2019-09-07 20:15:06,183 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 20:15:06,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2544 states and 3555 transitions. [2019-09-07 20:15:06,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2019-09-07 20:15:06,195 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:15:06,195 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2019-09-07 20:15:06,196 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:15:06,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:15:06,196 INFO L82 PathProgramCache]: Analyzing trace with hash 675649036, now seen corresponding path program 1 times [2019-09-07 20:15:06,196 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:15:06,196 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:15:06,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:15:06,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:15:06,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:15:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:15:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 196 proven. 237 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-07 20:15:06,698 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:15:06,699 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 20:15:06,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:15:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:15:06,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-07 20:15:06,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:15:07,135 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 303 proven. 2 refuted. 0 times theorem prover too weak. 137 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 20:15:07,149 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 20:15:07,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2019-09-07 20:15:07,152 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 20:15:07,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 20:15:07,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-09-07 20:15:07,153 INFO L87 Difference]: Start difference. First operand 2544 states and 3555 transitions. Second operand 11 states. [2019-09-07 20:15:19,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:15:19,054 INFO L93 Difference]: Finished difference Result 14349 states and 21129 transitions. [2019-09-07 20:15:19,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-09-07 20:15:19,055 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 343 [2019-09-07 20:15:19,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:15:19,125 INFO L225 Difference]: With dead ends: 14349 [2019-09-07 20:15:19,126 INFO L226 Difference]: Without dead ends: 11811 [2019-09-07 20:15:19,149 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=520, Invalid=2132, Unknown=0, NotChecked=0, Total=2652 [2019-09-07 20:15:19,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11811 states. [2019-09-07 20:15:19,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11811 to 9554. [2019-09-07 20:15:19,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9554 states. [2019-09-07 20:15:19,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9554 states to 9554 states and 12201 transitions. [2019-09-07 20:15:19,538 INFO L78 Accepts]: Start accepts. Automaton has 9554 states and 12201 transitions. Word has length 343 [2019-09-07 20:15:19,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:15:19,540 INFO L475 AbstractCegarLoop]: Abstraction has 9554 states and 12201 transitions. [2019-09-07 20:15:19,540 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 20:15:19,541 INFO L276 IsEmpty]: Start isEmpty. Operand 9554 states and 12201 transitions. [2019-09-07 20:15:19,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2019-09-07 20:15:19,549 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:15:19,550 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:19,550 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:15:19,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:15:19,551 INFO L82 PathProgramCache]: Analyzing trace with hash -563355049, now seen corresponding path program 1 times [2019-09-07 20:15:19,551 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:15:19,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:15:19,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:15:19,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:15:19,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:15:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:15:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 20:15:19,924 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:15:19,924 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 20:15:19,949 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 20:15:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:15:20,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 20:15:20,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:15:20,270 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 20:15:20,274 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 20:15:20,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 20:15:20,276 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 20:15:20,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 20:15:20,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 20:15:20,277 INFO L87 Difference]: Start difference. First operand 9554 states and 12201 transitions. Second operand 9 states. [2019-09-07 20:15:26,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:15:26,623 INFO L93 Difference]: Finished difference Result 25431 states and 35932 transitions. [2019-09-07 20:15:26,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 20:15:26,623 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 369 [2019-09-07 20:15:26,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:15:26,714 INFO L225 Difference]: With dead ends: 25431 [2019-09-07 20:15:26,715 INFO L226 Difference]: Without dead ends: 16190 [2019-09-07 20:15:26,747 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2019-09-07 20:15:26,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16190 states. [2019-09-07 20:15:27,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16190 to 15537. [2019-09-07 20:15:27,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15537 states. [2019-09-07 20:15:27,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15537 states to 15537 states and 20601 transitions. [2019-09-07 20:15:27,230 INFO L78 Accepts]: Start accepts. Automaton has 15537 states and 20601 transitions. Word has length 369 [2019-09-07 20:15:27,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:15:27,234 INFO L475 AbstractCegarLoop]: Abstraction has 15537 states and 20601 transitions. [2019-09-07 20:15:27,234 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 20:15:27,235 INFO L276 IsEmpty]: Start isEmpty. Operand 15537 states and 20601 transitions. [2019-09-07 20:15:27,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2019-09-07 20:15:27,259 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:15:27,259 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:27,260 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:15:27,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:15:27,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1758418480, now seen corresponding path program 1 times [2019-09-07 20:15:27,261 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:15:27,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:15:27,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:15:27,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:15:27,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:15:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:15:27,906 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2019-09-07 20:15:27,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 20:15:27,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 20:15:27,907 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 20:15:27,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 20:15:27,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 20:15:27,908 INFO L87 Difference]: Start difference. First operand 15537 states and 20601 transitions. Second operand 3 states. [2019-09-07 20:15:30,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:15:30,858 INFO L93 Difference]: Finished difference Result 34198 states and 46872 transitions. [2019-09-07 20:15:30,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 20:15:30,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 509 [2019-09-07 20:15:30,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:15:30,952 INFO L225 Difference]: With dead ends: 34198 [2019-09-07 20:15:30,952 INFO L226 Difference]: Without dead ends: 18974 [2019-09-07 20:15:31,011 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 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 20:15:31,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18974 states. [2019-09-07 20:15:31,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18974 to 18972. [2019-09-07 20:15:31,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18972 states. [2019-09-07 20:15:31,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18972 states to 18972 states and 25635 transitions. [2019-09-07 20:15:31,522 INFO L78 Accepts]: Start accepts. Automaton has 18972 states and 25635 transitions. Word has length 509 [2019-09-07 20:15:31,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:15:31,524 INFO L475 AbstractCegarLoop]: Abstraction has 18972 states and 25635 transitions. [2019-09-07 20:15:31,524 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 20:15:31,524 INFO L276 IsEmpty]: Start isEmpty. Operand 18972 states and 25635 transitions. [2019-09-07 20:15:31,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2019-09-07 20:15:31,572 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:15:31,572 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:31,573 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:15:31,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:15:31,573 INFO L82 PathProgramCache]: Analyzing trace with hash 104728744, now seen corresponding path program 1 times [2019-09-07 20:15:31,573 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:15:31,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:15:31,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:15:31,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:15:31,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:15:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:15:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 612 proven. 2 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2019-09-07 20:15:32,457 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:15:32,457 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) [2019-09-07 20:15:32,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 20:15:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:15:32,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 20:15:32,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:15:33,019 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 612 proven. 2 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2019-09-07 20:15:33,023 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 20:15:33,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 20:15:33,025 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 20:15:33,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 20:15:33,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 20:15:33,035 INFO L87 Difference]: Start difference. First operand 18972 states and 25635 transitions. Second operand 9 states. [2019-09-07 20:15:38,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:15:38,725 INFO L93 Difference]: Finished difference Result 38662 states and 53320 transitions. [2019-09-07 20:15:38,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 20:15:38,726 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 628 [2019-09-07 20:15:38,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:15:38,812 INFO L225 Difference]: With dead ends: 38662 [2019-09-07 20:15:38,813 INFO L226 Difference]: Without dead ends: 20003 [2019-09-07 20:15:38,852 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 634 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2019-09-07 20:15:38,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20003 states. [2019-09-07 20:15:39,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20003 to 19016. [2019-09-07 20:15:39,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19016 states. [2019-09-07 20:15:39,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19016 states to 19016 states and 22974 transitions. [2019-09-07 20:15:39,260 INFO L78 Accepts]: Start accepts. Automaton has 19016 states and 22974 transitions. Word has length 628 [2019-09-07 20:15:39,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:15:39,261 INFO L475 AbstractCegarLoop]: Abstraction has 19016 states and 22974 transitions. [2019-09-07 20:15:39,261 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 20:15:39,262 INFO L276 IsEmpty]: Start isEmpty. Operand 19016 states and 22974 transitions. [2019-09-07 20:15:39,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2019-09-07 20:15:39,303 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:15:39,304 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:39,304 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:15:39,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:15:39,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1790302347, now seen corresponding path program 1 times [2019-09-07 20:15:39,305 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:15:39,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:15:39,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:15:39,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:15:39,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:15:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:15:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 501 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-09-07 20:15:40,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:15:40,492 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) [2019-09-07 20:15:40,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 20:15:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:15:40,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 20:15:40,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:15:40,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 20:15:41,169 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 372 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2019-09-07 20:15:41,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 20:15:41,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2019-09-07 20:15:41,175 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 20:15:41,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 20:15:41,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-09-07 20:15:41,176 INFO L87 Difference]: Start difference. First operand 19016 states and 22974 transitions. Second operand 10 states. [2019-09-07 20:15:50,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:15:50,616 INFO L93 Difference]: Finished difference Result 53593 states and 66239 transitions. [2019-09-07 20:15:50,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-09-07 20:15:50,616 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 666 [2019-09-07 20:15:50,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:15:50,897 INFO L225 Difference]: With dead ends: 53593 [2019-09-07 20:15:50,898 INFO L226 Difference]: Without dead ends: 30713 [2019-09-07 20:15:50,932 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2019-09-07 20:15:50,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30713 states. [2019-09-07 20:15:51,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30713 to 24842. [2019-09-07 20:15:51,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24842 states. [2019-09-07 20:15:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24842 states to 24842 states and 28875 transitions. [2019-09-07 20:15:51,368 INFO L78 Accepts]: Start accepts. Automaton has 24842 states and 28875 transitions. Word has length 666 [2019-09-07 20:15:51,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:15:51,369 INFO L475 AbstractCegarLoop]: Abstraction has 24842 states and 28875 transitions. [2019-09-07 20:15:51,369 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 20:15:51,369 INFO L276 IsEmpty]: Start isEmpty. Operand 24842 states and 28875 transitions. [2019-09-07 20:15:51,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2019-09-07 20:15:51,397 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:15:51,397 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-09-07 20:15:51,398 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:15:51,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:15:51,398 INFO L82 PathProgramCache]: Analyzing trace with hash -165639986, now seen corresponding path program 1 times [2019-09-07 20:15:51,398 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:15:51,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:15:51,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:15:51,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:15:51,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:15:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:15:52,130 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 315 proven. 124 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2019-09-07 20:15:52,130 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:15:52,130 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) [2019-09-07 20:15:52,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 20:15:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:15:52,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 20:15:52,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:15:52,809 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 643 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-09-07 20:15:52,812 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 20:15:52,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 20:15:52,814 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 20:15:52,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 20:15:52,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 20:15:52,815 INFO L87 Difference]: Start difference. First operand 24842 states and 28875 transitions. Second operand 9 states. [2019-09-07 20:15:59,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:15:59,327 INFO L93 Difference]: Finished difference Result 51723 states and 63030 transitions. [2019-09-07 20:15:59,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-07 20:15:59,327 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 754 [2019-09-07 20:15:59,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:15:59,428 INFO L225 Difference]: With dead ends: 51723 [2019-09-07 20:15:59,428 INFO L226 Difference]: Without dead ends: 27194 [2019-09-07 20:15:59,464 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 765 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2019-09-07 20:15:59,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27194 states. [2019-09-07 20:15:59,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27194 to 26245. [2019-09-07 20:15:59,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26245 states. [2019-09-07 20:16:00,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26245 states to 26245 states and 32468 transitions. [2019-09-07 20:16:00,007 INFO L78 Accepts]: Start accepts. Automaton has 26245 states and 32468 transitions. Word has length 754 [2019-09-07 20:16:00,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:16:00,008 INFO L475 AbstractCegarLoop]: Abstraction has 26245 states and 32468 transitions. [2019-09-07 20:16:00,008 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 20:16:00,008 INFO L276 IsEmpty]: Start isEmpty. Operand 26245 states and 32468 transitions. [2019-09-07 20:16:00,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2019-09-07 20:16:00,049 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:16:00,050 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:16:00,050 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:16:00,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:16:00,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1678763494, now seen corresponding path program 1 times [2019-09-07 20:16:00,051 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:16:00,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:16:00,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:16:00,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:16:00,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:16:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:16:01,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 263 proven. 716 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2019-09-07 20:16:01,536 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:16:01,537 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) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 20:16:01,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:16:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:16:01,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 20:16:01,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:16:01,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 20:16:01,837 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 20:16:09,218 WARN L188 SmtUtils]: Spent 5.28 s on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2019-09-07 20:16:10,474 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 20:16:11,362 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_2 Int)) (let ((.cse0 (mod v_prenex_2 299926))) (and (= 0 .cse0) (<= (+ v_prenex_2 44) 0) (<= .cse0 (+ c_~a0~0 300073))))) (exists ((v_~a0~0_833 Int)) (let ((.cse1 (mod v_~a0~0_833 299926))) (and (<= .cse1 (+ c_~a0~0 599999)) (not (= 0 .cse1)) (<= (+ v_~a0~0_833 44) 0) (< v_~a0~0_833 0))))) is different from true [2019-09-07 20:16:11,427 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 20:16:12,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 0 proven. 686 refuted. 0 times theorem prover too weak. 385 trivial. 15 not checked. [2019-09-07 20:16:12,853 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 20:16:12,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2019-09-07 20:16:12,855 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-07 20:16:12,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-07 20:16:12,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=234, Unknown=2, NotChecked=30, Total=306 [2019-09-07 20:16:12,856 INFO L87 Difference]: Start difference. First operand 26245 states and 32468 transitions. Second operand 18 states. [2019-09-07 20:16:14,049 WARN L188 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 29 [2019-09-07 20:16:21,306 WARN L188 SmtUtils]: Spent 3.93 s on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2019-09-07 20:16:24,132 WARN L188 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2019-09-07 20:16:26,566 WARN L188 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 53 DAG size of output: 35 [2019-09-07 20:16:36,603 WARN L188 SmtUtils]: Spent 2.95 s on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2019-09-07 20:16:40,592 WARN L188 SmtUtils]: Spent 2.90 s on a formula simplification that was a NOOP. DAG size: 39 [2019-09-07 20:16:48,178 WARN L188 SmtUtils]: Spent 7.41 s on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2019-09-07 20:16:51,056 WARN L188 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 60 [2019-09-07 20:16:55,968 WARN L188 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2019-09-07 20:17:08,865 WARN L188 SmtUtils]: Spent 9.92 s on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2019-09-07 20:17:13,869 WARN L188 SmtUtils]: Spent 4.38 s on a formula simplification that was a NOOP. DAG size: 35 [2019-09-07 20:17:21,845 WARN L188 SmtUtils]: Spent 7.71 s on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-07 20:17:28,055 WARN L188 SmtUtils]: Spent 3.75 s on a formula simplification that was a NOOP. DAG size: 61 [2019-09-07 20:17:34,589 WARN L188 SmtUtils]: Spent 6.18 s on a formula simplification that was a NOOP. DAG size: 26 [2019-09-07 20:17:37,963 WARN L188 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 32 [2019-09-07 20:17:46,724 WARN L188 SmtUtils]: Spent 8.41 s on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2019-09-07 20:17:54,942 WARN L188 SmtUtils]: Spent 6.84 s on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-07 20:18:03,566 WARN L188 SmtUtils]: Spent 8.29 s on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2019-09-07 20:18:05,121 WARN L188 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-07 20:18:05,833 WARN L188 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-07 20:18:09,610 WARN L188 SmtUtils]: Spent 3.56 s on a formula simplification that was a NOOP. DAG size: 54 [2019-09-07 20:18:32,574 WARN L188 SmtUtils]: Spent 4.00 s on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2019-09-07 20:18:42,153 WARN L188 SmtUtils]: Spent 2.56 s on a formula simplification that was a NOOP. DAG size: 25 [2019-09-07 20:19:05,987 WARN L188 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2019-09-07 20:19:35,498 WARN L188 SmtUtils]: Spent 9.23 s on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-07 20:19:53,027 WARN L188 SmtUtils]: Spent 5.62 s on a formula simplification that was a NOOP. DAG size: 37 [2019-09-07 20:20:03,176 WARN L188 SmtUtils]: Spent 9.96 s on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-07 20:20:05,693 WARN L188 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 41 [2019-09-07 20:20:15,194 WARN L188 SmtUtils]: Spent 9.41 s on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2019-09-07 20:20:40,675 WARN L188 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2019-09-07 20:21:16,075 WARN L188 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2019-09-07 20:21:18,155 WARN L188 SmtUtils]: Spent 1.61 s on a formula simplification that was a NOOP. DAG size: 45 [2019-09-07 20:22:03,926 WARN L188 SmtUtils]: Spent 4.48 s on a formula simplification. DAG size of input: 37 DAG size of output: 26 [2019-09-07 20:22:49,245 WARN L188 SmtUtils]: Spent 4.59 s on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2019-09-07 20:23:19,737 WARN L188 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 37 [2019-09-07 20:25:56,224 WARN L188 SmtUtils]: Spent 4.50 s on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2019-09-07 20:26:04,060 WARN L188 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2019-09-07 20:28:07,977 WARN L188 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 42 [2019-09-07 20:28:53,974 WARN L188 SmtUtils]: Spent 4.85 s on a formula simplification. DAG size of input: 45 DAG size of output: 34