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/Problem13_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 19:20:52,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 19:20:52,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 19:20:52,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 19:20:52,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 19:20:52,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 19:20:52,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 19:20:52,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 19:20:52,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 19:20:52,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 19:20:52,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 19:20:52,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 19:20:52,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 19:20:52,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 19:20:52,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 19:20:52,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 19:20:52,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 19:20:52,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 19:20:52,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 19:20:52,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 19:20:52,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 19:20:52,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 19:20:52,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 19:20:52,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 19:20:52,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 19:20:52,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 19:20:52,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 19:20:52,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 19:20:52,618 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 19:20:52,637 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 19:20:52,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 19:20:52,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 19:20:52,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 19:20:52,642 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 19:20:52,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 19:20:52,643 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 19:20:52,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 19:20:52,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 19:20:52,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 19:20:52,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 19:20:52,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 19:20:52,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 19:20:52,644 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 19:20:52,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 19:20:52,645 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 19:20:52,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 19:20:52,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 19:20:52,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 19:20:52,647 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 19:20:52,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 19:20:52,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 19:20:52,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 19:20:52,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 19:20:52,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 19:20:52,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 19:20:52,649 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 19:20:52,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 19:20:52,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 19:20:52,705 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 19:20:52,725 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 19:20:52,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 19:20:52,731 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 19:20:52,731 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 19:20:52,732 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label07.c [2019-09-07 19:20:52,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e061d7f7e/a54e0e64962c4401a1b7806a6150d180/FLAG80b9b2ad9 [2019-09-07 19:20:53,555 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 19:20:53,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label07.c [2019-09-07 19:20:53,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e061d7f7e/a54e0e64962c4401a1b7806a6150d180/FLAG80b9b2ad9 [2019-09-07 19:20:53,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e061d7f7e/a54e0e64962c4401a1b7806a6150d180 [2019-09-07 19:20:53,634 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 19:20:53,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 19:20:53,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 19:20:53,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 19:20:53,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 19:20:53,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:20:53" (1/1) ... [2019-09-07 19:20:53,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c5f5aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:20:53, skipping insertion in model container [2019-09-07 19:20:53,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:20:53" (1/1) ... [2019-09-07 19:20:53,654 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 19:20:53,828 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 19:20:55,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:20:55,538 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 19:20:56,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:20:56,405 INFO L192 MainTranslator]: Completed translation [2019-09-07 19:20:56,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:20:56 WrapperNode [2019-09-07 19:20:56,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 19:20:56,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 19:20:56,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 19:20:56,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 19:20:56,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:20:56" (1/1) ... [2019-09-07 19:20:56,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:20:56" (1/1) ... [2019-09-07 19:20:56,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:20:56" (1/1) ... [2019-09-07 19:20:56,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:20:56" (1/1) ... [2019-09-07 19:20:56,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:20:56" (1/1) ... [2019-09-07 19:20:56,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:20:56" (1/1) ... [2019-09-07 19:20:56,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:20:56" (1/1) ... [2019-09-07 19:20:56,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 19:20:56,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 19:20:56,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 19:20:56,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 19:20:56,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:20:56" (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 19:20:56,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 19:20:56,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 19:20:56,791 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 19:20:56,791 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 19:20:56,791 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 19:20:56,791 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 19:20:56,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 19:20:56,792 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 19:20:56,792 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 19:20:56,792 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 19:20:56,792 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 19:20:56,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 19:20:56,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 19:20:56,793 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 19:20:56,793 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 19:20:56,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 19:20:56,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 19:21:03,373 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 19:21:03,374 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 19:21:03,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:21:03 BoogieIcfgContainer [2019-09-07 19:21:03,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 19:21:03,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 19:21:03,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 19:21:03,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 19:21:03,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 07:20:53" (1/3) ... [2019-09-07 19:21:03,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1baf9e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:21:03, skipping insertion in model container [2019-09-07 19:21:03,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:20:56" (2/3) ... [2019-09-07 19:21:03,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1baf9e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:21:03, skipping insertion in model container [2019-09-07 19:21:03,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:21:03" (3/3) ... [2019-09-07 19:21:03,392 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label07.c [2019-09-07 19:21:03,404 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 19:21:03,414 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 19:21:03,432 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 19:21:03,490 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 19:21:03,490 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 19:21:03,491 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 19:21:03,491 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 19:21:03,491 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 19:21:03,492 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 19:21:03,492 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 19:21:03,492 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 19:21:03,492 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 19:21:03,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2019-09-07 19:21:03,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-07 19:21:03,545 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:21:03,547 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] [2019-09-07 19:21:03,548 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:21:03,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:21:03,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1124378712, now seen corresponding path program 1 times [2019-09-07 19:21:03,557 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:21:03,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:21:03,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:21:03,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:21:03,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:21:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:21:03,869 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 19:21:03,872 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:21:03,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 19:21:03,877 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 19:21:03,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 19:21:03,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 19:21:03,894 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 3 states. [2019-09-07 19:21:10,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:21:10,417 INFO L93 Difference]: Finished difference Result 3101 states and 5726 transitions. [2019-09-07 19:21:10,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 19:21:10,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-09-07 19:21:10,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:21:10,476 INFO L225 Difference]: With dead ends: 3101 [2019-09-07 19:21:10,476 INFO L226 Difference]: Without dead ends: 1920 [2019-09-07 19:21:10,496 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 19:21:10,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2019-09-07 19:21:10,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1903. [2019-09-07 19:21:10,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1903 states. [2019-09-07 19:21:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 3344 transitions. [2019-09-07 19:21:10,729 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 3344 transitions. Word has length 27 [2019-09-07 19:21:10,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:21:10,731 INFO L475 AbstractCegarLoop]: Abstraction has 1903 states and 3344 transitions. [2019-09-07 19:21:10,731 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 19:21:10,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 3344 transitions. [2019-09-07 19:21:10,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-07 19:21:10,738 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:21:10,738 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 19:21:10,738 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:21:10,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:21:10,739 INFO L82 PathProgramCache]: Analyzing trace with hash -2049609055, now seen corresponding path program 1 times [2019-09-07 19:21:10,739 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:21:10,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:21:10,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:21:10,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:21:10,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:21:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:21:10,918 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:21:10,918 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:21:10,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 19:21:10,920 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 19:21:10,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 19:21:10,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:21:10,921 INFO L87 Difference]: Start difference. First operand 1903 states and 3344 transitions. Second operand 5 states. [2019-09-07 19:21:19,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:21:19,038 INFO L93 Difference]: Finished difference Result 5517 states and 9839 transitions. [2019-09-07 19:21:19,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:21:19,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2019-09-07 19:21:19,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:21:19,065 INFO L225 Difference]: With dead ends: 5517 [2019-09-07 19:21:19,066 INFO L226 Difference]: Without dead ends: 3620 [2019-09-07 19:21:19,074 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:21:19,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2019-09-07 19:21:19,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 3590. [2019-09-07 19:21:19,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3590 states. [2019-09-07 19:21:19,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 5678 transitions. [2019-09-07 19:21:19,173 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 5678 transitions. Word has length 96 [2019-09-07 19:21:19,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:21:19,174 INFO L475 AbstractCegarLoop]: Abstraction has 3590 states and 5678 transitions. [2019-09-07 19:21:19,174 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 19:21:19,174 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 5678 transitions. [2019-09-07 19:21:19,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-07 19:21:19,176 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:21:19,176 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 19:21:19,177 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:21:19,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:21:19,177 INFO L82 PathProgramCache]: Analyzing trace with hash -949085051, now seen corresponding path program 1 times [2019-09-07 19:21:19,177 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:21:19,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:21:19,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:21:19,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:21:19,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:21:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:21:19,273 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:21:19,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:21:19,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 19:21:19,274 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 19:21:19,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 19:21:19,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:21:19,275 INFO L87 Difference]: Start difference. First operand 3590 states and 5678 transitions. Second operand 5 states. [2019-09-07 19:21:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:21:28,799 INFO L93 Difference]: Finished difference Result 10784 states and 17551 transitions. [2019-09-07 19:21:28,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 19:21:28,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2019-09-07 19:21:28,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:21:28,847 INFO L225 Difference]: With dead ends: 10784 [2019-09-07 19:21:28,850 INFO L226 Difference]: Without dead ends: 7200 [2019-09-07 19:21:28,861 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 19:21:28,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7200 states. [2019-09-07 19:21:29,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7200 to 7049. [2019-09-07 19:21:29,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7049 states. [2019-09-07 19:21:29,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7049 states to 7049 states and 10340 transitions. [2019-09-07 19:21:29,105 INFO L78 Accepts]: Start accepts. Automaton has 7049 states and 10340 transitions. Word has length 98 [2019-09-07 19:21:29,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:21:29,107 INFO L475 AbstractCegarLoop]: Abstraction has 7049 states and 10340 transitions. [2019-09-07 19:21:29,107 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 19:21:29,107 INFO L276 IsEmpty]: Start isEmpty. Operand 7049 states and 10340 transitions. [2019-09-07 19:21:29,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-09-07 19:21:29,119 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:21:29,119 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 19:21:29,120 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:21:29,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:21:29,120 INFO L82 PathProgramCache]: Analyzing trace with hash 6656721, now seen corresponding path program 1 times [2019-09-07 19:21:29,121 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:21:29,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:21:29,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:21:29,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:21:29,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:21:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:21:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-07 19:21:29,312 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:21:29,312 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 19:21:29,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:21:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:21:29,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 19:21:29,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:21:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-07 19:21:29,568 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:21:29,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-09-07 19:21:29,572 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:21:29,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:21:29,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:21:29,573 INFO L87 Difference]: Start difference. First operand 7049 states and 10340 transitions. Second operand 6 states. [2019-09-07 19:21:40,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:21:40,673 INFO L93 Difference]: Finished difference Result 27586 states and 43130 transitions. [2019-09-07 19:21:40,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 19:21:40,673 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-09-07 19:21:40,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:21:40,771 INFO L225 Difference]: With dead ends: 27586 [2019-09-07 19:21:40,771 INFO L226 Difference]: Without dead ends: 20543 [2019-09-07 19:21:40,798 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-09-07 19:21:40,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20543 states. [2019-09-07 19:21:41,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20543 to 20390. [2019-09-07 19:21:41,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20390 states. [2019-09-07 19:21:41,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20390 states to 20390 states and 29330 transitions. [2019-09-07 19:21:41,339 INFO L78 Accepts]: Start accepts. Automaton has 20390 states and 29330 transitions. Word has length 120 [2019-09-07 19:21:41,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:21:41,340 INFO L475 AbstractCegarLoop]: Abstraction has 20390 states and 29330 transitions. [2019-09-07 19:21:41,340 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:21:41,341 INFO L276 IsEmpty]: Start isEmpty. Operand 20390 states and 29330 transitions. [2019-09-07 19:21:41,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-09-07 19:21:41,345 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:21:41,345 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 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 19:21:41,345 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:21:41,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:21:41,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1872922063, now seen corresponding path program 1 times [2019-09-07 19:21:41,346 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:21:41,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:21:41,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:21:41,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:21:41,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:21:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:21:42,451 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 40 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 19:21:42,451 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:21:42,451 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 19:21:42,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:21:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:21:42,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 19:21:42,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:21:42,636 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-07 19:21:42,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:21:42,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 19:21:42,650 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:21:42,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:21:42,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:21:42,651 INFO L87 Difference]: Start difference. First operand 20390 states and 29330 transitions. Second operand 9 states. [2019-09-07 19:21:56,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:21:56,981 INFO L93 Difference]: Finished difference Result 62317 states and 98297 transitions. [2019-09-07 19:21:56,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-07 19:21:56,982 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 184 [2019-09-07 19:21:56,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:21:57,210 INFO L225 Difference]: With dead ends: 62317 [2019-09-07 19:21:57,211 INFO L226 Difference]: Without dead ends: 41933 [2019-09-07 19:21:57,284 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2019-09-07 19:21:57,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41933 states. [2019-09-07 19:21:58,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41933 to 41357. [2019-09-07 19:21:58,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41357 states. [2019-09-07 19:21:58,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41357 states to 41357 states and 60108 transitions. [2019-09-07 19:21:58,726 INFO L78 Accepts]: Start accepts. Automaton has 41357 states and 60108 transitions. Word has length 184 [2019-09-07 19:21:58,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:21:58,727 INFO L475 AbstractCegarLoop]: Abstraction has 41357 states and 60108 transitions. [2019-09-07 19:21:58,727 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:21:58,727 INFO L276 IsEmpty]: Start isEmpty. Operand 41357 states and 60108 transitions. [2019-09-07 19:21:58,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-09-07 19:21:58,731 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:21:58,732 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:21:58,732 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:21:58,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:21:58,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1190726036, now seen corresponding path program 1 times [2019-09-07 19:21:58,733 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:21:58,733 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:21:58,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:21:58,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:21:58,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:21:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:21:58,965 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:21:58,966 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:21:58,966 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 19:21:58,995 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 19:21:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:21:59,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:21:59,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:21:59,209 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:21:59,215 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:21:59,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:21:59,221 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:21:59,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:21:59,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:21:59,222 INFO L87 Difference]: Start difference. First operand 41357 states and 60108 transitions. Second operand 9 states. [2019-09-07 19:22:13,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:22:13,423 INFO L93 Difference]: Finished difference Result 151758 states and 245358 transitions. [2019-09-07 19:22:13,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 19:22:13,424 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 216 [2019-09-07 19:22:13,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:22:13,966 INFO L225 Difference]: With dead ends: 151758 [2019-09-07 19:22:13,966 INFO L226 Difference]: Without dead ends: 111210 [2019-09-07 19:22:14,082 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2019-09-07 19:22:14,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111210 states. [2019-09-07 19:22:18,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111210 to 107662. [2019-09-07 19:22:18,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107662 states. [2019-09-07 19:22:19,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107662 states to 107662 states and 156678 transitions. [2019-09-07 19:22:19,117 INFO L78 Accepts]: Start accepts. Automaton has 107662 states and 156678 transitions. Word has length 216 [2019-09-07 19:22:19,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:22:19,118 INFO L475 AbstractCegarLoop]: Abstraction has 107662 states and 156678 transitions. [2019-09-07 19:22:19,118 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:22:19,118 INFO L276 IsEmpty]: Start isEmpty. Operand 107662 states and 156678 transitions. [2019-09-07 19:22:19,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2019-09-07 19:22:19,130 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:22:19,130 INFO L399 BasicCegarLoop]: trace histogram [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, 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] [2019-09-07 19:22:19,131 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:22:19,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:22:19,131 INFO L82 PathProgramCache]: Analyzing trace with hash 601200997, now seen corresponding path program 1 times [2019-09-07 19:22:19,131 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:22:19,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:22:19,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:22:19,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:22:19,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:22:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:22:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 226 proven. 71 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-07 19:22:19,436 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:22:19,436 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:22:19,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:22:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:22:19,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:22:19,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:22:19,630 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-09-07 19:22:19,634 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:22:19,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:22:19,636 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:22:19,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:22:19,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:22:19,637 INFO L87 Difference]: Start difference. First operand 107662 states and 156678 transitions. Second operand 9 states. [2019-09-07 19:22:40,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:22:40,750 INFO L93 Difference]: Finished difference Result 257434 states and 409587 transitions. [2019-09-07 19:22:40,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 19:22:40,751 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 299 [2019-09-07 19:22:40,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:22:41,425 INFO L225 Difference]: With dead ends: 257434 [2019-09-07 19:22:41,425 INFO L226 Difference]: Without dead ends: 150581 [2019-09-07 19:22:41,584 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 19:22:41,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150581 states. [2019-09-07 19:22:44,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150581 to 148743. [2019-09-07 19:22:44,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148743 states. [2019-09-07 19:22:44,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148743 states to 148743 states and 219582 transitions. [2019-09-07 19:22:44,569 INFO L78 Accepts]: Start accepts. Automaton has 148743 states and 219582 transitions. Word has length 299 [2019-09-07 19:22:44,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:22:44,569 INFO L475 AbstractCegarLoop]: Abstraction has 148743 states and 219582 transitions. [2019-09-07 19:22:44,570 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:22:44,570 INFO L276 IsEmpty]: Start isEmpty. Operand 148743 states and 219582 transitions. [2019-09-07 19:22:44,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2019-09-07 19:22:44,581 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:22:44,582 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:22:44,582 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:22:44,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:22:44,582 INFO L82 PathProgramCache]: Analyzing trace with hash -2087018949, now seen corresponding path program 1 times [2019-09-07 19:22:44,583 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:22:44,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:22:44,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:22:44,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:22:44,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:22:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:22:44,794 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:22:44,794 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:22:44,794 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 19:22:44,819 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 19:22:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:22:44,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 19:22:44,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:22:44,985 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-07 19:22:44,988 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:22:44,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2019-09-07 19:22:44,989 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 19:22:44,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 19:22:44,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-07 19:22:44,992 INFO L87 Difference]: Start difference. First operand 148743 states and 219582 transitions. Second operand 7 states. [2019-09-07 19:23:00,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:23:00,878 INFO L93 Difference]: Finished difference Result 324749 states and 495831 transitions. [2019-09-07 19:23:00,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-07 19:23:00,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2019-09-07 19:23:00,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:23:01,587 INFO L225 Difference]: With dead ends: 324749 [2019-09-07 19:23:01,587 INFO L226 Difference]: Without dead ends: 190736 [2019-09-07 19:23:01,798 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2019-09-07 19:23:01,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190736 states. [2019-09-07 19:23:09,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190736 to 183334. [2019-09-07 19:23:09,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183334 states. [2019-09-07 19:23:09,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183334 states to 183334 states and 260101 transitions. [2019-09-07 19:23:09,990 INFO L78 Accepts]: Start accepts. Automaton has 183334 states and 260101 transitions. Word has length 299 [2019-09-07 19:23:09,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:23:09,991 INFO L475 AbstractCegarLoop]: Abstraction has 183334 states and 260101 transitions. [2019-09-07 19:23:09,991 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 19:23:09,991 INFO L276 IsEmpty]: Start isEmpty. Operand 183334 states and 260101 transitions. [2019-09-07 19:23:09,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2019-09-07 19:23:09,998 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:23:09,998 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:23:09,999 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:23:09,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:23:09,999 INFO L82 PathProgramCache]: Analyzing trace with hash -622865304, now seen corresponding path program 1 times [2019-09-07 19:23:09,999 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:23:09,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:23:10,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:23:10,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:23:10,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:23:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:23:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 41 proven. 23 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-09-07 19:23:10,343 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:23:10,343 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 19:23:10,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:23:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:23:10,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:23:10,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:23:10,609 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:23:10,621 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:23:10,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:23:10,623 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:23:10,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:23:10,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:23:10,626 INFO L87 Difference]: Start difference. First operand 183334 states and 260101 transitions. Second operand 9 states. [2019-09-07 19:23:26,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:23:26,387 INFO L93 Difference]: Finished difference Result 358874 states and 520645 transitions. [2019-09-07 19:23:26,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 19:23:26,388 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 319 [2019-09-07 19:23:26,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:23:27,359 INFO L225 Difference]: With dead ends: 358874 [2019-09-07 19:23:27,359 INFO L226 Difference]: Without dead ends: 190276 [2019-09-07 19:23:27,631 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 320 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2019-09-07 19:23:27,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190276 states. [2019-09-07 19:23:31,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190276 to 178394. [2019-09-07 19:23:31,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178394 states. [2019-09-07 19:23:32,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178394 states to 178394 states and 248682 transitions. [2019-09-07 19:23:32,503 INFO L78 Accepts]: Start accepts. Automaton has 178394 states and 248682 transitions. Word has length 319 [2019-09-07 19:23:32,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:23:32,504 INFO L475 AbstractCegarLoop]: Abstraction has 178394 states and 248682 transitions. [2019-09-07 19:23:32,504 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:23:32,504 INFO L276 IsEmpty]: Start isEmpty. Operand 178394 states and 248682 transitions. [2019-09-07 19:23:32,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2019-09-07 19:23:32,510 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:23:32,510 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:23:32,511 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:23:32,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:23:32,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1937238177, now seen corresponding path program 1 times [2019-09-07 19:23:32,511 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:23:32,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:23:32,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:23:32,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:23:32,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:23:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:23:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-09-07 19:23:32,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:23:32,737 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:23:32,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:23:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:23:32,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 19:23:32,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:23:32,936 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (8)] Exception during sending of exit command (exit): Stream closed [2019-09-07 19:23:32,941 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:23:32,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2019-09-07 19:23:32,942 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:23:32,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:23:32,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:23:32,942 INFO L87 Difference]: Start difference. First operand 178394 states and 248682 transitions. Second operand 6 states. [2019-09-07 19:23:48,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:23:48,428 INFO L93 Difference]: Finished difference Result 366951 states and 509527 transitions. [2019-09-07 19:23:48,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 19:23:48,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 329 [2019-09-07 19:23:48,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:23:48,941 INFO L225 Difference]: With dead ends: 366951 [2019-09-07 19:23:48,941 INFO L226 Difference]: Without dead ends: 188517 [2019-09-07 19:23:49,191 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:23:49,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188517 states. [2019-09-07 19:23:51,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188517 to 174686. [2019-09-07 19:23:51,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174686 states. [2019-09-07 19:23:57,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174686 states to 174686 states and 226188 transitions. [2019-09-07 19:23:57,533 INFO L78 Accepts]: Start accepts. Automaton has 174686 states and 226188 transitions. Word has length 329 [2019-09-07 19:23:57,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:23:57,533 INFO L475 AbstractCegarLoop]: Abstraction has 174686 states and 226188 transitions. [2019-09-07 19:23:57,534 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:23:57,534 INFO L276 IsEmpty]: Start isEmpty. Operand 174686 states and 226188 transitions. [2019-09-07 19:23:57,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2019-09-07 19:23:57,541 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:23:57,541 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:23:57,542 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:23:57,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:23:57,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1522357209, now seen corresponding path program 1 times [2019-09-07 19:23:57,542 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:23:57,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:23:57,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:23:57,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:23:57,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:23:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:23:57,846 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-09-07 19:23:57,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:23:57,847 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:23:57,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:23:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:23:57,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:23:58,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:23:58,124 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-09-07 19:23:58,133 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:23:58,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:23:58,135 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:23:58,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:23:58,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:23:58,135 INFO L87 Difference]: Start difference. First operand 174686 states and 226188 transitions. Second operand 9 states. [2019-09-07 19:24:29,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:24:29,395 INFO L93 Difference]: Finished difference Result 403957 states and 541879 transitions. [2019-09-07 19:24:29,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-09-07 19:24:29,395 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 357 [2019-09-07 19:24:29,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:24:29,978 INFO L225 Difference]: With dead ends: 403957 [2019-09-07 19:24:29,978 INFO L226 Difference]: Without dead ends: 226771 [2019-09-07 19:24:30,195 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=254, Invalid=1006, Unknown=0, NotChecked=0, Total=1260 [2019-09-07 19:24:30,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226771 states. [2019-09-07 19:24:33,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226771 to 216940. [2019-09-07 19:24:33,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216940 states. [2019-09-07 19:24:33,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216940 states to 216940 states and 248069 transitions. [2019-09-07 19:24:33,437 INFO L78 Accepts]: Start accepts. Automaton has 216940 states and 248069 transitions. Word has length 357 [2019-09-07 19:24:33,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:24:33,438 INFO L475 AbstractCegarLoop]: Abstraction has 216940 states and 248069 transitions. [2019-09-07 19:24:33,438 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:24:33,438 INFO L276 IsEmpty]: Start isEmpty. Operand 216940 states and 248069 transitions. [2019-09-07 19:24:33,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2019-09-07 19:24:33,493 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:24:33,494 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:24:33,494 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:24:33,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:24:33,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1129702361, now seen corresponding path program 1 times [2019-09-07 19:24:33,495 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:24:33,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:24:33,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:24:33,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:24:33,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:24:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:24:34,633 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 179 proven. 233 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2019-09-07 19:24:34,633 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:24:34,633 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:24:34,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:24:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:24:34,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 19:24:34,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:24:34,857 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:24:35,099 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2019-09-07 19:24:35,106 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:24:35,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-07 19:24:35,107 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 19:24:35,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 19:24:35,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:24:35,108 INFO L87 Difference]: Start difference. First operand 216940 states and 248069 transitions. Second operand 8 states. [2019-09-07 19:24:56,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:24:56,996 INFO L93 Difference]: Finished difference Result 568340 states and 657245 transitions. [2019-09-07 19:24:56,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-09-07 19:24:56,996 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 631 [2019-09-07 19:24:56,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:24:57,788 INFO L225 Difference]: With dead ends: 568340 [2019-09-07 19:24:57,788 INFO L226 Difference]: Without dead ends: 352213 [2019-09-07 19:24:58,008 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 661 GetRequests, 642 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2019-09-07 19:24:58,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352213 states. [2019-09-07 19:25:03,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352213 to 347114. [2019-09-07 19:25:03,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347114 states. [2019-09-07 19:25:12,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347114 states to 347114 states and 397505 transitions. [2019-09-07 19:25:12,787 INFO L78 Accepts]: Start accepts. Automaton has 347114 states and 397505 transitions. Word has length 631 [2019-09-07 19:25:12,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:25:12,787 INFO L475 AbstractCegarLoop]: Abstraction has 347114 states and 397505 transitions. [2019-09-07 19:25:12,787 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 19:25:12,787 INFO L276 IsEmpty]: Start isEmpty. Operand 347114 states and 397505 transitions. [2019-09-07 19:25:12,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2019-09-07 19:25:12,877 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:25:12,878 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:12,878 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:25:12,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:25:12,879 INFO L82 PathProgramCache]: Analyzing trace with hash -388024325, now seen corresponding path program 1 times [2019-09-07 19:25:12,879 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:25:12,879 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:25:12,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:25:12,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:25:12,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:25:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:25:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 361 proven. 140 refuted. 0 times theorem prover too weak. 923 trivial. 0 not checked. [2019-09-07 19:25:13,590 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:25:13,591 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:25:13,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:25:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:25:13,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 19:25:13,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:25:13,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:25:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 809 proven. 2 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2019-09-07 19:25:14,752 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:25:14,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 11 [2019-09-07 19:25:14,753 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 19:25:14,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 19:25:14,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-09-07 19:25:14,755 INFO L87 Difference]: Start difference. First operand 347114 states and 397505 transitions. Second operand 11 states. [2019-09-07 19:25:30,561 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-09-07 19:26:01,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:26:01,924 INFO L93 Difference]: Finished difference Result 965303 states and 1123732 transitions. [2019-09-07 19:26:01,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2019-09-07 19:26:01,924 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 737 [2019-09-07 19:26:01,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:26:03,460 INFO L225 Difference]: With dead ends: 965303 [2019-09-07 19:26:03,461 INFO L226 Difference]: Without dead ends: 613173 [2019-09-07 19:26:03,796 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 917 GetRequests, 816 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4141 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1350, Invalid=9156, Unknown=0, NotChecked=0, Total=10506 [2019-09-07 19:26:04,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613173 states. [2019-09-07 19:26:19,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613173 to 582314. [2019-09-07 19:26:19,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582314 states. [2019-09-07 19:26:28,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582314 states to 582314 states and 664141 transitions. [2019-09-07 19:26:28,799 INFO L78 Accepts]: Start accepts. Automaton has 582314 states and 664141 transitions. Word has length 737 [2019-09-07 19:26:28,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:26:28,800 INFO L475 AbstractCegarLoop]: Abstraction has 582314 states and 664141 transitions. [2019-09-07 19:26:28,800 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 19:26:28,800 INFO L276 IsEmpty]: Start isEmpty. Operand 582314 states and 664141 transitions. [2019-09-07 19:26:28,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 799 [2019-09-07 19:26:28,861 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:26:28,862 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:26:28,862 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:26:28,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:26:28,862 INFO L82 PathProgramCache]: Analyzing trace with hash 2053848079, now seen corresponding path program 1 times [2019-09-07 19:26:28,863 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:26:28,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:26:28,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:26:28,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:26:28,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:26:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:26:31,269 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 155 proven. 645 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2019-09-07 19:26:31,270 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:26:31,270 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:26:31,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:26:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:26:36,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 19:26:36,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:26:36,223 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:26:37,140 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 764 proven. 2 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2019-09-07 19:26:37,152 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:26:37,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2019-09-07 19:26:37,154 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-07 19:26:37,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-07 19:26:37,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-09-07 19:26:37,154 INFO L87 Difference]: Start difference. First operand 582314 states and 664141 transitions. Second operand 16 states. [2019-09-07 19:27:26,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:27:26,291 INFO L93 Difference]: Finished difference Result 1055929 states and 1206887 transitions. [2019-09-07 19:27:26,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2019-09-07 19:27:26,292 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 798 [2019-09-07 19:27:26,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:27:27,823 INFO L225 Difference]: With dead ends: 1055929 [2019-09-07 19:27:27,823 INFO L226 Difference]: Without dead ends: 651559 [2019-09-07 19:27:28,271 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 878 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4786 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1793, Invalid=10639, Unknown=0, NotChecked=0, Total=12432 [2019-09-07 19:27:28,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651559 states. [2019-09-07 19:27:49,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651559 to 629640. [2019-09-07 19:27:49,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629640 states. [2019-09-07 19:27:51,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629640 states to 629640 states and 709333 transitions. [2019-09-07 19:27:51,275 INFO L78 Accepts]: Start accepts. Automaton has 629640 states and 709333 transitions. Word has length 798 [2019-09-07 19:27:51,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:27:51,276 INFO L475 AbstractCegarLoop]: Abstraction has 629640 states and 709333 transitions. [2019-09-07 19:27:51,276 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-07 19:27:51,276 INFO L276 IsEmpty]: Start isEmpty. Operand 629640 states and 709333 transitions. [2019-09-07 19:27:51,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1083 [2019-09-07 19:27:51,353 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:27:51,354 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-09-07 19:27:51,354 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:27:51,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:27:51,355 INFO L82 PathProgramCache]: Analyzing trace with hash -910135428, now seen corresponding path program 1 times [2019-09-07 19:27:51,355 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:27:51,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:27:51,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:27:51,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:27:51,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:27:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:28:00,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 474 proven. 582 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2019-09-07 19:28:00,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:28:00,803 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:28:00,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:28:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:28:01,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-07 19:28:01,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:28:01,141 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:28:01,141 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:28:04,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 99 proven. 15 refuted. 2 times theorem prover too weak. 1046 trivial. 0 not checked. [2019-09-07 19:28:04,151 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:28:04,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2019-09-07 19:28:04,153 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-07 19:28:04,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-07 19:28:04,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=172, Unknown=1, NotChecked=0, Total=210 [2019-09-07 19:28:04,154 INFO L87 Difference]: Start difference. First operand 629640 states and 709333 transitions. Second operand 15 states. [2019-09-07 19:29:07,783 WARN L188 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2019-09-07 19:32:22,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:32:22,516 INFO L93 Difference]: Finished difference Result 1410182 states and 1624013 transitions. [2019-09-07 19:32:22,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2019-09-07 19:32:22,516 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 1082 [2019-09-07 19:32:22,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:32:25,007 INFO L225 Difference]: With dead ends: 1410182 [2019-09-07 19:32:25,008 INFO L226 Difference]: Without dead ends: 805592 [2019-09-07 19:32:26,957 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1259 GetRequests, 1159 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3828 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1501, Invalid=8800, Unknown=1, NotChecked=0, Total=10302 [2019-09-07 19:32:27,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805592 states. [2019-09-07 19:32:48,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805592 to 776027. [2019-09-07 19:32:48,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776027 states.