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/Problem12_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 18:55:48,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 18:55:48,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 18:55:48,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 18:55:48,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 18:55:48,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 18:55:48,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 18:55:48,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 18:55:48,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 18:55:48,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 18:55:48,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 18:55:48,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 18:55:48,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 18:55:48,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 18:55:48,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 18:55:48,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 18:55:48,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 18:55:48,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 18:55:48,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 18:55:48,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 18:55:48,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 18:55:48,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 18:55:48,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 18:55:48,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 18:55:48,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 18:55:48,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 18:55:48,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 18:55:48,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 18:55:48,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 18:55:48,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 18:55:48,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 18:55:48,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 18:55:48,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 18:55:48,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 18:55:48,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 18:55:48,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 18:55:48,637 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 18:55:48,672 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 18:55:48,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 18:55:48,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 18:55:48,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 18:55:48,674 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 18:55:48,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 18:55:48,674 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 18:55:48,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 18:55:48,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 18:55:48,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 18:55:48,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 18:55:48,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 18:55:48,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 18:55:48,675 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 18:55:48,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 18:55:48,676 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 18:55:48,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 18:55:48,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 18:55:48,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 18:55:48,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 18:55:48,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 18:55:48,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 18:55:48,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 18:55:48,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 18:55:48,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 18:55:48,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 18:55:48,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 18:55:48,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 18:55:48,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 18:55:48,708 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 18:55:48,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 18:55:48,725 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 18:55:48,726 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 18:55:48,726 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 18:55:48,727 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label31.c [2019-09-07 18:55:48,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7e7a16f8/148341becf094f03b96d3ae843136720/FLAG88d4f9dc9 [2019-09-07 18:55:49,581 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 18:55:49,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label31.c [2019-09-07 18:55:49,613 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7e7a16f8/148341becf094f03b96d3ae843136720/FLAG88d4f9dc9 [2019-09-07 18:55:50,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7e7a16f8/148341becf094f03b96d3ae843136720 [2019-09-07 18:55:50,121 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 18:55:50,124 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 18:55:50,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 18:55:50,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 18:55:50,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 18:55:50,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 06:55:50" (1/1) ... [2019-09-07 18:55:50,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ebc11f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:55:50, skipping insertion in model container [2019-09-07 18:55:50,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 06:55:50" (1/1) ... [2019-09-07 18:55:50,145 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 18:55:50,308 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 18:55:51,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 18:55:51,807 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 18:55:52,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 18:55:52,580 INFO L192 MainTranslator]: Completed translation [2019-09-07 18:55:52,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:55:52 WrapperNode [2019-09-07 18:55:52,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 18:55:52,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 18:55:52,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 18:55:52,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 18:55:52,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:55:52" (1/1) ... [2019-09-07 18:55:52,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:55:52" (1/1) ... [2019-09-07 18:55:52,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:55:52" (1/1) ... [2019-09-07 18:55:52,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:55:52" (1/1) ... [2019-09-07 18:55:52,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:55:52" (1/1) ... [2019-09-07 18:55:52,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:55:52" (1/1) ... [2019-09-07 18:55:52,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:55:52" (1/1) ... [2019-09-07 18:55:52,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 18:55:52,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 18:55:52,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 18:55:52,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 18:55:52,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:55:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 18:55:52,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 18:55:52,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 18:55:52,873 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 18:55:52,874 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 18:55:52,874 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 18:55:52,874 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 18:55:52,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 18:55:52,874 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 18:55:52,874 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 18:55:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 18:55:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 18:55:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 18:55:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 18:55:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 18:55:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 18:55:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 18:55:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 18:55:57,570 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 18:55:57,573 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 18:55:57,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 06:55:57 BoogieIcfgContainer [2019-09-07 18:55:57,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 18:55:57,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 18:55:57,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 18:55:57,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 18:55:57,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 06:55:50" (1/3) ... [2019-09-07 18:55:57,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e938aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 06:55:57, skipping insertion in model container [2019-09-07 18:55:57,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:55:52" (2/3) ... [2019-09-07 18:55:57,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e938aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 06:55:57, skipping insertion in model container [2019-09-07 18:55:57,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 06:55:57" (3/3) ... [2019-09-07 18:55:57,590 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label31.c [2019-09-07 18:55:57,603 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 18:55:57,614 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 18:55:57,631 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 18:55:57,670 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 18:55:57,670 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 18:55:57,671 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 18:55:57,671 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 18:55:57,671 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 18:55:57,671 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 18:55:57,671 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 18:55:57,671 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 18:55:57,671 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 18:55:57,705 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-09-07 18:55:57,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-09-07 18:55:57,714 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:55:57,716 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:55:57,718 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:55:57,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:55:57,723 INFO L82 PathProgramCache]: Analyzing trace with hash -593043574, now seen corresponding path program 1 times [2019-09-07 18:55:57,725 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:55:57,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:55:57,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:55:57,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:55:57,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:55:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:55:58,060 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 18:55:58,062 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:55:58,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 18:55:58,067 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 18:55:58,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 18:55:58,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 18:55:58,085 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 3 states. [2019-09-07 18:56:03,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:56:03,521 INFO L93 Difference]: Finished difference Result 2443 states and 4697 transitions. [2019-09-07 18:56:03,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 18:56:03,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2019-09-07 18:56:03,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:56:03,572 INFO L225 Difference]: With dead ends: 2443 [2019-09-07 18:56:03,573 INFO L226 Difference]: Without dead ends: 1542 [2019-09-07 18:56:03,590 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 18:56:03,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2019-09-07 18:56:03,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2019-09-07 18:56:03,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-09-07 18:56:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2858 transitions. [2019-09-07 18:56:03,760 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2858 transitions. Word has length 69 [2019-09-07 18:56:03,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:56:03,761 INFO L475 AbstractCegarLoop]: Abstraction has 1542 states and 2858 transitions. [2019-09-07 18:56:03,761 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 18:56:03,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2858 transitions. [2019-09-07 18:56:03,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-09-07 18:56:03,767 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:56:03,767 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:56:03,767 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:56:03,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:56:03,768 INFO L82 PathProgramCache]: Analyzing trace with hash 448651207, now seen corresponding path program 1 times [2019-09-07 18:56:03,768 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:56:03,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:56:03,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:56:03,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:56:03,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:56:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:56:04,051 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:56:04,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:56:04,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 18:56:04,054 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 18:56:04,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 18:56:04,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 18:56:04,055 INFO L87 Difference]: Start difference. First operand 1542 states and 2858 transitions. Second operand 6 states. [2019-09-07 18:56:10,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:56:10,541 INFO L93 Difference]: Finished difference Result 4705 states and 8757 transitions. [2019-09-07 18:56:10,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 18:56:10,543 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2019-09-07 18:56:10,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:56:10,569 INFO L225 Difference]: With dead ends: 4705 [2019-09-07 18:56:10,569 INFO L226 Difference]: Without dead ends: 3169 [2019-09-07 18:56:10,574 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:56:10,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3169 states. [2019-09-07 18:56:10,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3169 to 3139. [2019-09-07 18:56:10,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3139 states. [2019-09-07 18:56:10,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 5495 transitions. [2019-09-07 18:56:10,700 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 5495 transitions. Word has length 146 [2019-09-07 18:56:10,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:56:10,704 INFO L475 AbstractCegarLoop]: Abstraction has 3139 states and 5495 transitions. [2019-09-07 18:56:10,704 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 18:56:10,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 5495 transitions. [2019-09-07 18:56:10,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-09-07 18:56:10,718 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:56:10,718 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 18:56:10,718 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:56:10,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:56:10,720 INFO L82 PathProgramCache]: Analyzing trace with hash 198959659, now seen corresponding path program 1 times [2019-09-07 18:56:10,720 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:56:10,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:56:10,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:56:10,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:56:10,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:56:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:56:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:56:10,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:56:10,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 18:56:10,945 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 18:56:10,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 18:56:10,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-07 18:56:10,946 INFO L87 Difference]: Start difference. First operand 3139 states and 5495 transitions. Second operand 5 states. [2019-09-07 18:56:17,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:56:17,850 INFO L93 Difference]: Finished difference Result 9601 states and 17041 transitions. [2019-09-07 18:56:17,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-07 18:56:17,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2019-09-07 18:56:17,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:56:17,893 INFO L225 Difference]: With dead ends: 9601 [2019-09-07 18:56:17,897 INFO L226 Difference]: Without dead ends: 6468 [2019-09-07 18:56:17,907 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 18:56:17,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6468 states. [2019-09-07 18:56:18,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6468 to 6392. [2019-09-07 18:56:18,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6392 states. [2019-09-07 18:56:18,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6392 states to 6392 states and 10143 transitions. [2019-09-07 18:56:18,157 INFO L78 Accepts]: Start accepts. Automaton has 6392 states and 10143 transitions. Word has length 148 [2019-09-07 18:56:18,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:56:18,160 INFO L475 AbstractCegarLoop]: Abstraction has 6392 states and 10143 transitions. [2019-09-07 18:56:18,160 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 18:56:18,160 INFO L276 IsEmpty]: Start isEmpty. Operand 6392 states and 10143 transitions. [2019-09-07 18:56:18,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-09-07 18:56:18,165 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:56:18,165 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:18,165 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:56:18,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:56:18,166 INFO L82 PathProgramCache]: Analyzing trace with hash -871511750, now seen corresponding path program 1 times [2019-09-07 18:56:18,166 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:56:18,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:56:18,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:56:18,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:56:18,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:56:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:56:18,385 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:56:18,385 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:56:18,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 18:56:18,386 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 18:56:18,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 18:56:18,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-07 18:56:18,387 INFO L87 Difference]: Start difference. First operand 6392 states and 10143 transitions. Second operand 6 states. [2019-09-07 18:56:30,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:56:30,555 INFO L93 Difference]: Finished difference Result 25742 states and 43710 transitions. [2019-09-07 18:56:30,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 18:56:30,555 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2019-09-07 18:56:30,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:56:30,660 INFO L225 Difference]: With dead ends: 25742 [2019-09-07 18:56:30,660 INFO L226 Difference]: Without dead ends: 19356 [2019-09-07 18:56:30,682 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-07 18:56:30,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19356 states. [2019-09-07 18:56:31,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19356 to 19324. [2019-09-07 18:56:31,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19324 states. [2019-09-07 18:56:31,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19324 states to 19324 states and 29796 transitions. [2019-09-07 18:56:31,230 INFO L78 Accepts]: Start accepts. Automaton has 19324 states and 29796 transitions. Word has length 159 [2019-09-07 18:56:31,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:56:31,231 INFO L475 AbstractCegarLoop]: Abstraction has 19324 states and 29796 transitions. [2019-09-07 18:56:31,231 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 18:56:31,232 INFO L276 IsEmpty]: Start isEmpty. Operand 19324 states and 29796 transitions. [2019-09-07 18:56:31,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-09-07 18:56:31,234 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:56:31,235 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:31,235 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:56:31,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:56:31,236 INFO L82 PathProgramCache]: Analyzing trace with hash -18914402, now seen corresponding path program 1 times [2019-09-07 18:56:31,236 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:56:31,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:56:31,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:56:31,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:56:31,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:56:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:56:31,421 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:56:31,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:56:31,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 18:56:31,423 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 18:56:31,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 18:56:31,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 18:56:31,423 INFO L87 Difference]: Start difference. First operand 19324 states and 29796 transitions. Second operand 6 states. [2019-09-07 18:56:38,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:56:38,293 INFO L93 Difference]: Finished difference Result 48622 states and 78549 transitions. [2019-09-07 18:56:38,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 18:56:38,294 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 193 [2019-09-07 18:56:38,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:56:38,433 INFO L225 Difference]: With dead ends: 48622 [2019-09-07 18:56:38,433 INFO L226 Difference]: Without dead ends: 29304 [2019-09-07 18:56:38,489 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:56:38,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29304 states. [2019-09-07 18:56:39,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29304 to 29195. [2019-09-07 18:56:39,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29195 states. [2019-09-07 18:56:39,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29195 states to 29195 states and 43315 transitions. [2019-09-07 18:56:39,219 INFO L78 Accepts]: Start accepts. Automaton has 29195 states and 43315 transitions. Word has length 193 [2019-09-07 18:56:39,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:56:39,219 INFO L475 AbstractCegarLoop]: Abstraction has 29195 states and 43315 transitions. [2019-09-07 18:56:39,220 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 18:56:39,220 INFO L276 IsEmpty]: Start isEmpty. Operand 29195 states and 43315 transitions. [2019-09-07 18:56:39,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-09-07 18:56:39,224 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:56:39,224 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:39,225 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:56:39,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:56:39,226 INFO L82 PathProgramCache]: Analyzing trace with hash -372152049, now seen corresponding path program 1 times [2019-09-07 18:56:39,226 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:56:39,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:56:39,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:56:39,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:56:39,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:56:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:56:39,421 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-07 18:56:39,421 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:56:39,422 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 18:56:39,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:56:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:56:39,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:56:39,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:56:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:56:39,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 18:56:39,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2019-09-07 18:56:39,878 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 18:56:39,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 18:56:39,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-07 18:56:39,879 INFO L87 Difference]: Start difference. First operand 29195 states and 43315 transitions. Second operand 5 states. [2019-09-07 18:56:47,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:56:47,578 INFO L93 Difference]: Finished difference Result 80645 states and 128648 transitions. [2019-09-07 18:56:47,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-07 18:56:47,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2019-09-07 18:56:47,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:56:47,843 INFO L225 Difference]: With dead ends: 80645 [2019-09-07 18:56:47,843 INFO L226 Difference]: Without dead ends: 51456 [2019-09-07 18:56:47,944 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-07 18:56:48,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51456 states. [2019-09-07 18:56:50,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51456 to 48102. [2019-09-07 18:56:50,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48102 states. [2019-09-07 18:56:51,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48102 states to 48102 states and 75630 transitions. [2019-09-07 18:56:51,102 INFO L78 Accepts]: Start accepts. Automaton has 48102 states and 75630 transitions. Word has length 214 [2019-09-07 18:56:51,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:56:51,104 INFO L475 AbstractCegarLoop]: Abstraction has 48102 states and 75630 transitions. [2019-09-07 18:56:51,108 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 18:56:51,108 INFO L276 IsEmpty]: Start isEmpty. Operand 48102 states and 75630 transitions. [2019-09-07 18:56:51,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2019-09-07 18:56:51,117 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:56:51,117 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 18:56:51,118 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:56:51,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:56:51,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1515804387, now seen corresponding path program 1 times [2019-09-07 18:56:51,126 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:56:51,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:56:51,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:56:51,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:56:51,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:56:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:56:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 124 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 18:56:51,425 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:56:51,426 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 18:56:51,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:56:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:56:51,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 18:56:51,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:56:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-09-07 18:56:51,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 18:56:51,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 18:56:51,702 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:56:51,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:56:51,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:56:51,703 INFO L87 Difference]: Start difference. First operand 48102 states and 75630 transitions. Second operand 9 states. [2019-09-07 18:57:07,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:57:07,688 INFO L93 Difference]: Finished difference Result 146355 states and 255470 transitions. [2019-09-07 18:57:07,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-09-07 18:57:07,689 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 262 [2019-09-07 18:57:07,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:57:08,676 INFO L225 Difference]: With dead ends: 146355 [2019-09-07 18:57:08,676 INFO L226 Difference]: Without dead ends: 98259 [2019-09-07 18:57:08,781 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 279 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2019-09-07 18:57:08,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98259 states. [2019-09-07 18:57:11,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98259 to 91529. [2019-09-07 18:57:11,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91529 states. [2019-09-07 18:57:14,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91529 states to 91529 states and 140929 transitions. [2019-09-07 18:57:14,505 INFO L78 Accepts]: Start accepts. Automaton has 91529 states and 140929 transitions. Word has length 262 [2019-09-07 18:57:14,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:57:14,506 INFO L475 AbstractCegarLoop]: Abstraction has 91529 states and 140929 transitions. [2019-09-07 18:57:14,506 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:57:14,506 INFO L276 IsEmpty]: Start isEmpty. Operand 91529 states and 140929 transitions. [2019-09-07 18:57:14,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2019-09-07 18:57:14,519 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:57:14,519 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:57:14,519 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:57:14,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:57:14,520 INFO L82 PathProgramCache]: Analyzing trace with hash -773862826, now seen corresponding path program 1 times [2019-09-07 18:57:14,520 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:57:14,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:57:14,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:57:14,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:57:14,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:57:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:57:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 263 proven. 85 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-09-07 18:57:14,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:57:14,727 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:57:14,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:57:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:57:14,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:57:14,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:57:15,064 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-09-07 18:57:15,079 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:57:15,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 18:57:15,080 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:57:15,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:57:15,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:57:15,083 INFO L87 Difference]: Start difference. First operand 91529 states and 140929 transitions. Second operand 9 states. [2019-09-07 18:57:27,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:57:27,395 INFO L93 Difference]: Finished difference Result 218862 states and 378820 transitions. [2019-09-07 18:57:27,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 18:57:27,396 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 331 [2019-09-07 18:57:27,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:57:28,146 INFO L225 Difference]: With dead ends: 218862 [2019-09-07 18:57:28,146 INFO L226 Difference]: Without dead ends: 120684 [2019-09-07 18:57:28,373 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2019-09-07 18:57:28,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120684 states. [2019-09-07 18:57:31,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120684 to 104043. [2019-09-07 18:57:31,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104043 states. [2019-09-07 18:57:32,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104043 states to 104043 states and 163917 transitions. [2019-09-07 18:57:32,209 INFO L78 Accepts]: Start accepts. Automaton has 104043 states and 163917 transitions. Word has length 331 [2019-09-07 18:57:32,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:57:32,210 INFO L475 AbstractCegarLoop]: Abstraction has 104043 states and 163917 transitions. [2019-09-07 18:57:32,210 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:57:32,210 INFO L276 IsEmpty]: Start isEmpty. Operand 104043 states and 163917 transitions. [2019-09-07 18:57:32,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2019-09-07 18:57:32,238 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:57:32,239 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:57:32,239 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:57:32,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:57:32,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1428473386, now seen corresponding path program 1 times [2019-09-07 18:57:32,240 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:57:32,240 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:57:32,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:57:32,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:57:32,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:57:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:57:32,660 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:57:32,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:57:32,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 18:57:32,662 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 18:57:32,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 18:57:32,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 18:57:32,664 INFO L87 Difference]: Start difference. First operand 104043 states and 163917 transitions. Second operand 4 states. [2019-09-07 18:57:41,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:57:41,913 INFO L93 Difference]: Finished difference Result 256545 states and 414113 transitions. [2019-09-07 18:57:41,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 18:57:41,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 343 [2019-09-07 18:57:41,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:57:42,549 INFO L225 Difference]: With dead ends: 256545 [2019-09-07 18:57:42,549 INFO L226 Difference]: Without dead ends: 151728 [2019-09-07 18:57:42,800 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 18:57:42,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151728 states. [2019-09-07 18:57:49,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151728 to 141626. [2019-09-07 18:57:49,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141626 states. [2019-09-07 18:57:49,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141626 states to 141626 states and 215388 transitions. [2019-09-07 18:57:49,857 INFO L78 Accepts]: Start accepts. Automaton has 141626 states and 215388 transitions. Word has length 343 [2019-09-07 18:57:49,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:57:49,858 INFO L475 AbstractCegarLoop]: Abstraction has 141626 states and 215388 transitions. [2019-09-07 18:57:49,858 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 18:57:49,858 INFO L276 IsEmpty]: Start isEmpty. Operand 141626 states and 215388 transitions. [2019-09-07 18:57:49,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2019-09-07 18:57:49,909 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:57:49,909 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 18:57:49,909 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:57:49,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:57:49,910 INFO L82 PathProgramCache]: Analyzing trace with hash 2087305594, now seen corresponding path program 1 times [2019-09-07 18:57:49,910 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:57:49,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:57:49,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:57:49,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:57:49,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:57:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:57:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2019-09-07 18:57:50,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:57:50,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 18:57:50,194 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 18:57:50,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 18:57:50,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 18:57:50,195 INFO L87 Difference]: Start difference. First operand 141626 states and 215388 transitions. Second operand 3 states. [2019-09-07 18:57:59,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:57:59,489 INFO L93 Difference]: Finished difference Result 309525 states and 476708 transitions. [2019-09-07 18:57:59,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 18:57:59,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 449 [2019-09-07 18:57:59,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:58:00,082 INFO L225 Difference]: With dead ends: 309525 [2019-09-07 18:58:00,082 INFO L226 Difference]: Without dead ends: 167905 [2019-09-07 18:58:00,309 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 18:58:00,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167905 states. [2019-09-07 18:58:03,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167905 to 159325. [2019-09-07 18:58:03,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159325 states. [2019-09-07 18:58:03,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159325 states to 159325 states and 230583 transitions. [2019-09-07 18:58:03,459 INFO L78 Accepts]: Start accepts. Automaton has 159325 states and 230583 transitions. Word has length 449 [2019-09-07 18:58:03,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:58:03,460 INFO L475 AbstractCegarLoop]: Abstraction has 159325 states and 230583 transitions. [2019-09-07 18:58:03,460 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 18:58:03,460 INFO L276 IsEmpty]: Start isEmpty. Operand 159325 states and 230583 transitions. [2019-09-07 18:58:03,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2019-09-07 18:58:03,510 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:58:03,511 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:58:03,511 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:58:03,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:58:03,512 INFO L82 PathProgramCache]: Analyzing trace with hash 768080746, now seen corresponding path program 1 times [2019-09-07 18:58:03,512 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:58:03,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:58:03,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:58:03,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:58:03,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:58:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:58:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 408 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-09-07 18:58:03,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:58:03,926 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 18:58:03,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:58:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:58:04,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:58:04,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:58:07,266 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 408 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-09-07 18:58:07,270 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:58:07,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 18:58:07,273 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:58:07,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:58:07,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:58:07,273 INFO L87 Difference]: Start difference. First operand 159325 states and 230583 transitions. Second operand 9 states. [2019-09-07 18:58:22,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:58:22,517 INFO L93 Difference]: Finished difference Result 366996 states and 578026 transitions. [2019-09-07 18:58:22,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 18:58:22,518 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 505 [2019-09-07 18:58:22,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:58:23,418 INFO L225 Difference]: With dead ends: 366996 [2019-09-07 18:58:23,418 INFO L226 Difference]: Without dead ends: 206115 [2019-09-07 18:58:23,758 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-09-07 18:58:23,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206115 states. [2019-09-07 18:58:28,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206115 to 190382. [2019-09-07 18:58:28,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190382 states. [2019-09-07 18:58:28,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190382 states to 190382 states and 267891 transitions. [2019-09-07 18:58:28,962 INFO L78 Accepts]: Start accepts. Automaton has 190382 states and 267891 transitions. Word has length 505 [2019-09-07 18:58:28,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:58:28,963 INFO L475 AbstractCegarLoop]: Abstraction has 190382 states and 267891 transitions. [2019-09-07 18:58:28,963 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:58:28,963 INFO L276 IsEmpty]: Start isEmpty. Operand 190382 states and 267891 transitions. [2019-09-07 18:58:29,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2019-09-07 18:58:29,229 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:58:29,230 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:58:29,230 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:58:29,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:58:29,231 INFO L82 PathProgramCache]: Analyzing trace with hash 715933712, now seen corresponding path program 1 times [2019-09-07 18:58:29,231 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:58:29,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:58:29,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:58:29,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:58:29,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:58:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:58:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2019-09-07 18:58:31,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:58:31,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 18:58:31,192 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 18:58:31,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 18:58:31,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-07 18:58:31,192 INFO L87 Difference]: Start difference. First operand 190382 states and 267891 transitions. Second operand 6 states. [2019-09-07 18:58:45,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:58:45,760 INFO L93 Difference]: Finished difference Result 419981 states and 657600 transitions. [2019-09-07 18:58:45,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-07 18:58:45,761 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 979 [2019-09-07 18:58:45,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:58:45,770 INFO L225 Difference]: With dead ends: 419981 [2019-09-07 18:58:45,770 INFO L226 Difference]: Without dead ends: 0 [2019-09-07 18:58:46,457 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-07 18:58:46,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-07 18:58:46,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-07 18:58:46,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-07 18:58:46,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-07 18:58:46,462 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 979 [2019-09-07 18:58:46,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:58:46,462 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-07 18:58:46,462 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 18:58:46,463 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-07 18:58:46,463 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-07 18:58:46,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-07 18:58:50,081 WARN L188 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 33 [2019-09-07 19:01:22,758 WARN L188 SmtUtils]: Spent 2.44 m on a formula simplification. DAG size of input: 3866 DAG size of output: 3261 [2019-09-07 19:03:46,837 WARN L188 SmtUtils]: Spent 2.40 m on a formula simplification. DAG size of input: 3866 DAG size of output: 3261 [2019-09-07 19:03:53,958 WARN L188 SmtUtils]: Spent 7.05 s on a formula simplification. DAG size of input: 958 DAG size of output: 76 [2019-09-07 19:04:01,128 WARN L188 SmtUtils]: Spent 6.93 s on a formula simplification. DAG size of input: 958 DAG size of output: 76 [2019-09-07 19:04:07,993 WARN L188 SmtUtils]: Spent 6.83 s on a formula simplification. DAG size of input: 958 DAG size of output: 76 [2019-09-07 19:04:15,002 WARN L188 SmtUtils]: Spent 6.97 s on a formula simplification. DAG size of input: 958 DAG size of output: 76 [2019-09-07 19:04:21,819 WARN L188 SmtUtils]: Spent 6.79 s on a formula simplification. DAG size of input: 958 DAG size of output: 76 [2019-09-07 19:04:28,851 WARN L188 SmtUtils]: Spent 6.82 s on a formula simplification. DAG size of input: 958 DAG size of output: 76 [2019-09-07 19:04:35,804 WARN L188 SmtUtils]: Spent 6.90 s on a formula simplification. DAG size of input: 958 DAG size of output: 76