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/Problem19_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 22:51:05,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 22:51:05,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 22:51:05,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 22:51:06,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 22:51:06,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 22:51:06,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 22:51:06,013 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 22:51:06,033 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 22:51:06,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 22:51:06,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 22:51:06,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 22:51:06,035 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 22:51:06,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 22:51:06,035 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 22:51:06,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 22:51:06,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 22:51:06,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 22:51:06,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 22:51:06,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 22:51:06,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 22:51:06,037 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 22:51:06,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 22:51:06,037 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 22:51:06,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 22:51:06,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 22:51:06,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 22:51:06,038 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 22:51:06,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 22:51:06,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 22:51:06,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 22:51:06,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 22:51:06,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 22:51:06,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 22:51:06,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 22:51:06,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 22:51:06,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 22:51:06,072 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 22:51:06,084 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 22:51:06,089 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 22:51:06,090 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 22:51:06,091 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 22:51:06,092 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label02.c [2019-09-07 22:51:06,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da6e1107/e7cccf089198499da9e7fc392f8bdfab/FLAG1ffda7a97 [2019-09-07 22:51:06,971 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 22:51:06,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label02.c [2019-09-07 22:51:07,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da6e1107/e7cccf089198499da9e7fc392f8bdfab/FLAG1ffda7a97 [2019-09-07 22:51:07,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da6e1107/e7cccf089198499da9e7fc392f8bdfab [2019-09-07 22:51:07,490 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 22:51:07,491 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 22:51:07,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 22:51:07,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 22:51:07,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 22:51:07,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 10:51:07" (1/1) ... [2019-09-07 22:51:07,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b05ff34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:51:07, skipping insertion in model container [2019-09-07 22:51:07,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 10:51:07" (1/1) ... [2019-09-07 22:51:07,528 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 22:51:07,734 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 22:51:09,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 22:51:09,940 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 22:51:11,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 22:51:11,049 INFO L192 MainTranslator]: Completed translation [2019-09-07 22:51:11,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:51:11 WrapperNode [2019-09-07 22:51:11,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 22:51:11,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 22:51:11,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 22:51:11,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 22:51:11,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:51:11" (1/1) ... [2019-09-07 22:51:11,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:51:11" (1/1) ... [2019-09-07 22:51:11,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:51:11" (1/1) ... [2019-09-07 22:51:11,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:51:11" (1/1) ... [2019-09-07 22:51:11,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:51:11" (1/1) ... [2019-09-07 22:51:11,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:51:11" (1/1) ... [2019-09-07 22:51:11,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:51:11" (1/1) ... [2019-09-07 22:51:11,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 22:51:11,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 22:51:11,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 22:51:11,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 22:51:11,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:51:11" (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 22:51:11,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 22:51:11,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 22:51:11,619 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 22:51:11,619 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 22:51:11,619 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 22:51:11,619 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 22:51:11,619 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-07 22:51:11,620 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-07 22:51:11,620 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 22:51:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 22:51:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 22:51:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 22:51:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 22:51:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-07 22:51:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-07 22:51:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 22:51:11,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 22:51:11,622 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 22:51:11,622 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 22:51:11,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 22:51:11,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 22:51:22,414 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 22:51:22,415 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 22:51:22,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 10:51:22 BoogieIcfgContainer [2019-09-07 22:51:22,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 22:51:22,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 22:51:22,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 22:51:22,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 22:51:22,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 10:51:07" (1/3) ... [2019-09-07 22:51:22,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350c5a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 10:51:22, skipping insertion in model container [2019-09-07 22:51:22,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:51:11" (2/3) ... [2019-09-07 22:51:22,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350c5a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 10:51:22, skipping insertion in model container [2019-09-07 22:51:22,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 10:51:22" (3/3) ... [2019-09-07 22:51:22,436 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label02.c [2019-09-07 22:51:22,451 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 22:51:22,466 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 22:51:22,488 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 22:51:22,552 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 22:51:22,553 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 22:51:22,553 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 22:51:22,553 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 22:51:22,553 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 22:51:22,553 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 22:51:22,554 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 22:51:22,554 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 22:51:22,554 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 22:51:22,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-07 22:51:22,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-09-07 22:51:22,631 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:51:22,633 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] [2019-09-07 22:51:22,635 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:51:22,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:51:22,640 INFO L82 PathProgramCache]: Analyzing trace with hash 76783818, now seen corresponding path program 1 times [2019-09-07 22:51:22,642 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:51:22,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:51:22,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:51:22,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:51:22,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:51:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:51:23,084 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 22:51:23,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:51:23,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 22:51:23,092 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 22:51:23,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 22:51:23,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 22:51:23,107 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 3 states. [2019-09-07 22:51:34,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:51:34,313 INFO L93 Difference]: Finished difference Result 5031 states and 9496 transitions. [2019-09-07 22:51:34,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 22:51:34,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2019-09-07 22:51:34,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:51:34,363 INFO L225 Difference]: With dead ends: 5031 [2019-09-07 22:51:34,364 INFO L226 Difference]: Without dead ends: 3192 [2019-09-07 22:51:34,379 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 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 22:51:34,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3192 states. [2019-09-07 22:51:34,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3192 to 3145. [2019-09-07 22:51:34,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3145 states. [2019-09-07 22:51:34,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 5823 transitions. [2019-09-07 22:51:34,591 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 5823 transitions. Word has length 72 [2019-09-07 22:51:34,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:51:34,592 INFO L475 AbstractCegarLoop]: Abstraction has 3145 states and 5823 transitions. [2019-09-07 22:51:34,592 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 22:51:34,592 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 5823 transitions. [2019-09-07 22:51:34,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-09-07 22:51:34,598 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:51:34,598 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:51:34,598 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:51:34,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:51:34,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1886417653, now seen corresponding path program 1 times [2019-09-07 22:51:34,599 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:51:34,600 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:51:34,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:51:34,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:51:34,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:51:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:51:34,787 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:51:34,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:51:34,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 22:51:34,789 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:51:34,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:51:34,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:51:34,790 INFO L87 Difference]: Start difference. First operand 3145 states and 5823 transitions. Second operand 6 states. [2019-09-07 22:51:52,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:51:52,323 INFO L93 Difference]: Finished difference Result 9402 states and 17465 transitions. [2019-09-07 22:51:52,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 22:51:52,325 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2019-09-07 22:51:52,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:51:52,361 INFO L225 Difference]: With dead ends: 9402 [2019-09-07 22:51:52,361 INFO L226 Difference]: Without dead ends: 6263 [2019-09-07 22:51:52,370 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:51:52,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6263 states. [2019-09-07 22:51:52,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6263 to 6157. [2019-09-07 22:51:52,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6157 states. [2019-09-07 22:51:52,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6157 states to 6157 states and 10968 transitions. [2019-09-07 22:51:52,556 INFO L78 Accepts]: Start accepts. Automaton has 6157 states and 10968 transitions. Word has length 144 [2019-09-07 22:51:52,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:51:52,559 INFO L475 AbstractCegarLoop]: Abstraction has 6157 states and 10968 transitions. [2019-09-07 22:51:52,559 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:51:52,559 INFO L276 IsEmpty]: Start isEmpty. Operand 6157 states and 10968 transitions. [2019-09-07 22:51:52,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-09-07 22:51:52,571 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:51:52,571 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, 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] [2019-09-07 22:51:52,571 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:51:52,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:51:52,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1707239182, now seen corresponding path program 1 times [2019-09-07 22:51:52,572 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:51:52,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:51:52,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:51:52,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:51:52,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:51:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:51:52,782 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:51:52,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:51:52,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 22:51:52,783 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 22:51:52,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 22:51:52,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 22:51:52,784 INFO L87 Difference]: Start difference. First operand 6157 states and 10968 transitions. Second operand 5 states. [2019-09-07 22:52:10,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:52:10,698 INFO L93 Difference]: Finished difference Result 18589 states and 33342 transitions. [2019-09-07 22:52:10,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 22:52:10,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2019-09-07 22:52:10,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:52:10,772 INFO L225 Difference]: With dead ends: 18589 [2019-09-07 22:52:10,773 INFO L226 Difference]: Without dead ends: 12438 [2019-09-07 22:52:10,790 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 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 22:52:10,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12438 states. [2019-09-07 22:52:11,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12438 to 12168. [2019-09-07 22:52:11,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12168 states. [2019-09-07 22:52:11,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12168 states to 12168 states and 18247 transitions. [2019-09-07 22:52:11,169 INFO L78 Accepts]: Start accepts. Automaton has 12168 states and 18247 transitions. Word has length 158 [2019-09-07 22:52:11,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:52:11,172 INFO L475 AbstractCegarLoop]: Abstraction has 12168 states and 18247 transitions. [2019-09-07 22:52:11,172 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 22:52:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 12168 states and 18247 transitions. [2019-09-07 22:52:11,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2019-09-07 22:52:11,178 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:52:11,178 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, 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] [2019-09-07 22:52:11,179 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:52:11,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:52:11,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1586257697, now seen corresponding path program 1 times [2019-09-07 22:52:11,179 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:52:11,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:52:11,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:52:11,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:52:11,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:52:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:52:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 130 proven. 82 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 22:52:11,449 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:52:11,449 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) [2019-09-07 22:52:11,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:52:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:52:11,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 22:52:11,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:52:11,800 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-09-07 22:52:11,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:52:11,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2019-09-07 22:52:11,812 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 22:52:11,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 22:52:11,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 22:52:11,813 INFO L87 Difference]: Start difference. First operand 12168 states and 18247 transitions. Second operand 7 states. [2019-09-07 22:52:37,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:52:37,076 INFO L93 Difference]: Finished difference Result 48381 states and 78172 transitions. [2019-09-07 22:52:37,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 22:52:37,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 247 [2019-09-07 22:52:37,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:52:37,318 INFO L225 Difference]: With dead ends: 48381 [2019-09-07 22:52:37,318 INFO L226 Difference]: Without dead ends: 36219 [2019-09-07 22:52:37,366 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2019-09-07 22:52:37,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36219 states. [2019-09-07 22:52:38,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36219 to 35603. [2019-09-07 22:52:38,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35603 states. [2019-09-07 22:52:38,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35603 states to 35603 states and 49872 transitions. [2019-09-07 22:52:38,506 INFO L78 Accepts]: Start accepts. Automaton has 35603 states and 49872 transitions. Word has length 247 [2019-09-07 22:52:38,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:52:38,507 INFO L475 AbstractCegarLoop]: Abstraction has 35603 states and 49872 transitions. [2019-09-07 22:52:38,507 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 22:52:38,507 INFO L276 IsEmpty]: Start isEmpty. Operand 35603 states and 49872 transitions. [2019-09-07 22:52:38,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2019-09-07 22:52:38,514 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:52:38,514 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, 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] [2019-09-07 22:52:38,515 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:52:38,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:52:38,516 INFO L82 PathProgramCache]: Analyzing trace with hash -884687870, now seen corresponding path program 1 times [2019-09-07 22:52:38,516 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:52:38,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:52:38,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:52:38,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:52:38,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:52:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:52:38,826 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 130 proven. 82 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 22:52:38,826 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:52:38,826 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) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:52:38,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:52:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:52:38,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 22:52:38,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:52:39,078 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-09-07 22:52:39,090 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:52:39,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 22:52:39,091 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:52:39,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:52:39,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:52:39,092 INFO L87 Difference]: Start difference. First operand 35603 states and 49872 transitions. Second operand 9 states. [2019-09-07 22:52:46,428 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2019-09-07 22:53:13,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:53:13,699 INFO L93 Difference]: Finished difference Result 135066 states and 227571 transitions. [2019-09-07 22:53:13,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-09-07 22:53:13,700 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 322 [2019-09-07 22:53:13,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:53:14,188 INFO L225 Difference]: With dead ends: 135066 [2019-09-07 22:53:14,189 INFO L226 Difference]: Without dead ends: 99469 [2019-09-07 22:53:14,306 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=262, Invalid=928, Unknown=0, NotChecked=0, Total=1190 [2019-09-07 22:53:14,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99469 states. [2019-09-07 22:53:18,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99469 to 96664. [2019-09-07 22:53:18,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96664 states. [2019-09-07 22:53:19,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96664 states to 96664 states and 144933 transitions. [2019-09-07 22:53:19,105 INFO L78 Accepts]: Start accepts. Automaton has 96664 states and 144933 transitions. Word has length 322 [2019-09-07 22:53:19,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:53:19,106 INFO L475 AbstractCegarLoop]: Abstraction has 96664 states and 144933 transitions. [2019-09-07 22:53:19,106 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:53:19,106 INFO L276 IsEmpty]: Start isEmpty. Operand 96664 states and 144933 transitions. [2019-09-07 22:53:19,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2019-09-07 22:53:19,119 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:53:19,120 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, 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] [2019-09-07 22:53:19,120 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:53:19,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:53:19,121 INFO L82 PathProgramCache]: Analyzing trace with hash -52470381, now seen corresponding path program 1 times [2019-09-07 22:53:19,121 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:53:19,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:53:19,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:53:19,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:53:19,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:53:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:53:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-07 22:53:21,833 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:53:21,833 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 22:53:21,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:53:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:53:21,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:53:21,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:53:22,113 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:53:22,117 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:53:22,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2019-09-07 22:53:22,118 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 22:53:22,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 22:53:22,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-07 22:53:22,119 INFO L87 Difference]: Start difference. First operand 96664 states and 144933 transitions. Second operand 5 states. [2019-09-07 22:53:38,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:53:38,864 INFO L93 Difference]: Finished difference Result 283386 states and 444528 transitions. [2019-09-07 22:53:38,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 22:53:38,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 580 [2019-09-07 22:53:38,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:53:39,899 INFO L225 Difference]: With dead ends: 283386 [2019-09-07 22:53:39,899 INFO L226 Difference]: Without dead ends: 186728 [2019-09-07 22:53:40,089 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-07 22:53:40,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186728 states. [2019-09-07 22:53:43,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186728 to 165483. [2019-09-07 22:53:43,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165483 states. [2019-09-07 22:53:43,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165483 states to 165483 states and 239074 transitions. [2019-09-07 22:53:43,470 INFO L78 Accepts]: Start accepts. Automaton has 165483 states and 239074 transitions. Word has length 580 [2019-09-07 22:53:43,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:53:43,472 INFO L475 AbstractCegarLoop]: Abstraction has 165483 states and 239074 transitions. [2019-09-07 22:53:43,472 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 22:53:43,472 INFO L276 IsEmpty]: Start isEmpty. Operand 165483 states and 239074 transitions. [2019-09-07 22:53:43,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 875 [2019-09-07 22:53:43,505 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:53:43,506 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, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:53:43,506 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:53:43,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:53:43,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1918766423, now seen corresponding path program 1 times [2019-09-07 22:53:43,507 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:53:43,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:53:43,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:53:43,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:53:43,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:53:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:53:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 287 proven. 86 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-09-07 22:53:44,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:53:44,934 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 22:53:44,956 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 22:53:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:53:45,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 1184 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:53:45,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:53:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-09-07 22:53:46,206 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:53:46,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:53:46,210 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:53:46,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:53:46,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:53:46,211 INFO L87 Difference]: Start difference. First operand 165483 states and 239074 transitions. Second operand 9 states. [2019-09-07 22:54:21,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:54:21,888 INFO L93 Difference]: Finished difference Result 470145 states and 757237 transitions. [2019-09-07 22:54:21,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 22:54:21,888 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 874 [2019-09-07 22:54:21,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:54:23,311 INFO L225 Difference]: With dead ends: 470145 [2019-09-07 22:54:23,311 INFO L226 Difference]: Without dead ends: 301888 [2019-09-07 22:54:23,671 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 895 GetRequests, 880 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2019-09-07 22:54:23,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301888 states. [2019-09-07 22:54:35,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301888 to 300050. [2019-09-07 22:54:35,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300050 states. [2019-09-07 22:54:36,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300050 states to 300050 states and 457042 transitions. [2019-09-07 22:54:36,690 INFO L78 Accepts]: Start accepts. Automaton has 300050 states and 457042 transitions. Word has length 874 [2019-09-07 22:54:36,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:54:36,692 INFO L475 AbstractCegarLoop]: Abstraction has 300050 states and 457042 transitions. [2019-09-07 22:54:36,692 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:54:36,692 INFO L276 IsEmpty]: Start isEmpty. Operand 300050 states and 457042 transitions. [2019-09-07 22:54:36,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1074 [2019-09-07 22:54:36,797 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:54:36,798 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, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:54:36,798 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:54:36,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:54:36,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1622724934, now seen corresponding path program 1 times [2019-09-07 22:54:36,799 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:54:36,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:54:36,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:54:36,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:54:36,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:54:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:54:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 452 proven. 187 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2019-09-07 22:54:44,786 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:54:44,786 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 22:54:44,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:54:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:54:45,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:54:45,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:54:45,955 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 690 proven. 2 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2019-09-07 22:54:45,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:54:45,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:54:45,962 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:54:45,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:54:45,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:54:45,963 INFO L87 Difference]: Start difference. First operand 300050 states and 457042 transitions. Second operand 9 states. [2019-09-07 22:55:29,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:55:29,697 INFO L93 Difference]: Finished difference Result 661988 states and 1357598 transitions. [2019-09-07 22:55:29,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 22:55:29,698 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1073 [2019-09-07 22:55:29,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:55:37,436 INFO L225 Difference]: With dead ends: 661988 [2019-09-07 22:55:37,437 INFO L226 Difference]: Without dead ends: 354909 [2019-09-07 22:55:37,916 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1096 GetRequests, 1080 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2019-09-07 22:55:38,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354909 states. [2019-09-07 22:55:47,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354909 to 348570. [2019-09-07 22:55:47,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348570 states. [2019-09-07 22:55:49,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348570 states to 348570 states and 601184 transitions. [2019-09-07 22:55:49,848 INFO L78 Accepts]: Start accepts. Automaton has 348570 states and 601184 transitions. Word has length 1073 [2019-09-07 22:55:49,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:55:49,849 INFO L475 AbstractCegarLoop]: Abstraction has 348570 states and 601184 transitions. [2019-09-07 22:55:49,849 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:55:49,850 INFO L276 IsEmpty]: Start isEmpty. Operand 348570 states and 601184 transitions. [2019-09-07 22:55:49,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1085 [2019-09-07 22:55:49,908 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:55:49,909 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:55:49,909 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:55:49,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:55:49,910 INFO L82 PathProgramCache]: Analyzing trace with hash 577078065, now seen corresponding path program 1 times [2019-09-07 22:55:49,910 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:55:49,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:55:49,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:55:49,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:55:49,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:55:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:55:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1398 backedges. 676 proven. 2 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2019-09-07 22:55:52,945 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:55:52,945 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 22:55:52,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:55:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:55:53,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 22:55:53,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:55:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1398 backedges. 967 proven. 2 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2019-09-07 22:55:54,469 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:55:54,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-09-07 22:55:54,471 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 22:55:54,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 22:55:54,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-09-07 22:55:54,471 INFO L87 Difference]: Start difference. First operand 348570 states and 601184 transitions. Second operand 10 states. [2019-09-07 22:57:51,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:57:51,205 INFO L93 Difference]: Finished difference Result 1508911 states and 2948877 transitions. [2019-09-07 22:57:51,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2019-09-07 22:57:51,206 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1084 [2019-09-07 22:57:51,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:58:06,932 INFO L225 Difference]: With dead ends: 1508911 [2019-09-07 22:58:06,932 INFO L226 Difference]: Without dead ends: 1153422 [2019-09-07 22:58:08,083 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1274 GetRequests, 1173 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4234 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1523, Invalid=8983, Unknown=0, NotChecked=0, Total=10506 [2019-09-07 22:58:08,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153422 states. [2019-09-07 22:58:48,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153422 to 1114631. [2019-09-07 22:58:48,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1114631 states.