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/Problem03_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 13:12:33,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 13:12:33,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 13:12:33,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 13:12:33,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 13:12:33,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 13:12:33,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 13:12:33,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 13:12:33,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 13:12:33,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 13:12:33,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 13:12:33,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 13:12:33,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 13:12:33,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 13:12:33,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 13:12:33,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 13:12:33,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 13:12:33,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 13:12:33,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 13:12:33,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 13:12:33,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 13:12:33,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 13:12:33,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 13:12:33,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 13:12:33,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 13:12:33,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 13:12:33,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 13:12:33,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 13:12:33,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 13:12:33,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 13:12:33,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 13:12:33,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 13:12:33,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 13:12:33,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 13:12:33,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 13:12:33,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 13:12:33,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 13:12:33,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 13:12:33,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 13:12:33,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 13:12:33,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 13:12:33,874 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 13:12:33,896 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 13:12:33,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 13:12:33,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 13:12:33,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 13:12:33,899 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 13:12:33,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 13:12:33,900 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 13:12:33,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 13:12:33,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 13:12:33,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 13:12:33,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 13:12:33,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 13:12:33,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 13:12:33,903 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 13:12:33,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 13:12:33,904 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 13:12:33,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 13:12:33,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 13:12:33,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 13:12:33,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 13:12:33,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 13:12:33,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 13:12:33,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 13:12:33,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 13:12:33,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 13:12:33,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 13:12:33,906 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 13:12:33,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 13:12:33,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 13:12:33,948 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 13:12:33,962 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 13:12:33,967 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 13:12:33,968 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 13:12:33,969 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 13:12:33,969 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label05.c [2019-09-07 13:12:34,047 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/799421f88/d2723df12e5040068edad11203c18bfb/FLAG6b5a0bda6 [2019-09-07 13:12:34,724 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 13:12:34,725 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label05.c [2019-09-07 13:12:34,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/799421f88/d2723df12e5040068edad11203c18bfb/FLAG6b5a0bda6 [2019-09-07 13:12:34,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/799421f88/d2723df12e5040068edad11203c18bfb [2019-09-07 13:12:34,917 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 13:12:34,919 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 13:12:34,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 13:12:34,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 13:12:34,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 13:12:34,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:12:34" (1/1) ... [2019-09-07 13:12:34,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ff144e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:12:34, skipping insertion in model container [2019-09-07 13:12:34,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:12:34" (1/1) ... [2019-09-07 13:12:34,936 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 13:12:35,012 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 13:12:35,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:12:35,931 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 13:12:36,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:12:36,335 INFO L192 MainTranslator]: Completed translation [2019-09-07 13:12:36,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:12:36 WrapperNode [2019-09-07 13:12:36,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 13:12:36,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 13:12:36,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 13:12:36,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 13:12:36,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:12:36" (1/1) ... [2019-09-07 13:12:36,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:12:36" (1/1) ... [2019-09-07 13:12:36,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:12:36" (1/1) ... [2019-09-07 13:12:36,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:12:36" (1/1) ... [2019-09-07 13:12:36,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:12:36" (1/1) ... [2019-09-07 13:12:36,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:12:36" (1/1) ... [2019-09-07 13:12:36,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:12:36" (1/1) ... [2019-09-07 13:12:36,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 13:12:36,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 13:12:36,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 13:12:36,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 13:12:36,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:12:36" (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 13:12:36,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 13:12:36,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 13:12:36,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 13:12:36,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 13:12:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 13:12:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 13:12:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 13:12:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 13:12:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 13:12:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 13:12:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 13:12:38,778 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 13:12:38,779 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 13:12:38,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:12:38 BoogieIcfgContainer [2019-09-07 13:12:38,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 13:12:38,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 13:12:38,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 13:12:38,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 13:12:38,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 01:12:34" (1/3) ... [2019-09-07 13:12:38,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498f3633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:12:38, skipping insertion in model container [2019-09-07 13:12:38,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:12:36" (2/3) ... [2019-09-07 13:12:38,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498f3633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:12:38, skipping insertion in model container [2019-09-07 13:12:38,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:12:38" (3/3) ... [2019-09-07 13:12:38,799 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label05.c [2019-09-07 13:12:38,814 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 13:12:38,826 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 13:12:38,845 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 13:12:38,897 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 13:12:38,898 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 13:12:38,898 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 13:12:38,899 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 13:12:38,900 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 13:12:38,900 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 13:12:38,900 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 13:12:38,900 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 13:12:38,901 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 13:12:38,942 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-09-07 13:12:38,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-09-07 13:12:38,963 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:12:38,964 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:12:38,967 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:12:38,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:12:38,973 INFO L82 PathProgramCache]: Analyzing trace with hash 693071197, now seen corresponding path program 1 times [2019-09-07 13:12:38,975 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:12:38,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:12:39,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:12:39,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:12:39,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:12:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:12:39,674 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 13:12:39,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:12:39,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:12:39,682 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:12:39,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:12:39,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:12:39,700 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 3 states. [2019-09-07 13:12:41,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:12:41,399 INFO L93 Difference]: Finished difference Result 835 states and 1476 transitions. [2019-09-07 13:12:41,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:12:41,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2019-09-07 13:12:41,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:12:41,424 INFO L225 Difference]: With dead ends: 835 [2019-09-07 13:12:41,424 INFO L226 Difference]: Without dead ends: 462 [2019-09-07 13:12:41,437 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 13:12:41,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2019-09-07 13:12:41,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 460. [2019-09-07 13:12:41,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2019-09-07 13:12:41,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 739 transitions. [2019-09-07 13:12:41,528 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 739 transitions. Word has length 164 [2019-09-07 13:12:41,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:12:41,529 INFO L475 AbstractCegarLoop]: Abstraction has 460 states and 739 transitions. [2019-09-07 13:12:41,529 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:12:41,529 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 739 transitions. [2019-09-07 13:12:41,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-09-07 13:12:41,535 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:12:41,536 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 13:12:41,536 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:12:41,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:12:41,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1942585914, now seen corresponding path program 1 times [2019-09-07 13:12:41,537 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:12:41,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:12:41,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:12:41,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:12:41,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:12:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:12:41,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:12:41,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:12:41,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 13:12:41,812 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 13:12:41,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 13:12:41,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 13:12:41,814 INFO L87 Difference]: Start difference. First operand 460 states and 739 transitions. Second operand 6 states. [2019-09-07 13:12:43,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:12:43,648 INFO L93 Difference]: Finished difference Result 1391 states and 2302 transitions. [2019-09-07 13:12:43,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 13:12:43,649 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2019-09-07 13:12:43,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:12:43,658 INFO L225 Difference]: With dead ends: 1391 [2019-09-07 13:12:43,659 INFO L226 Difference]: Without dead ends: 937 [2019-09-07 13:12:43,661 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 13:12:43,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2019-09-07 13:12:43,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 899. [2019-09-07 13:12:43,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2019-09-07 13:12:43,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1431 transitions. [2019-09-07 13:12:43,727 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1431 transitions. Word has length 173 [2019-09-07 13:12:43,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:12:43,728 INFO L475 AbstractCegarLoop]: Abstraction has 899 states and 1431 transitions. [2019-09-07 13:12:43,728 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 13:12:43,728 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1431 transitions. [2019-09-07 13:12:43,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-09-07 13:12:43,737 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:12:43,738 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 13:12:43,738 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:12:43,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:12:43,739 INFO L82 PathProgramCache]: Analyzing trace with hash -2046687031, now seen corresponding path program 1 times [2019-09-07 13:12:43,740 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:12:43,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:12:43,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:12:43,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:12:43,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:12:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:12:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:12:44,090 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:12:44,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:12:44,092 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:12:44,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:12:44,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:12:44,093 INFO L87 Difference]: Start difference. First operand 899 states and 1431 transitions. Second operand 3 states. [2019-09-07 13:12:45,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:12:45,279 INFO L93 Difference]: Finished difference Result 2635 states and 4271 transitions. [2019-09-07 13:12:45,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:12:45,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2019-09-07 13:12:45,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:12:45,293 INFO L225 Difference]: With dead ends: 2635 [2019-09-07 13:12:45,293 INFO L226 Difference]: Without dead ends: 1742 [2019-09-07 13:12:45,296 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 13:12:45,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2019-09-07 13:12:45,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1737. [2019-09-07 13:12:45,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1737 states. [2019-09-07 13:12:45,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 2653 transitions. [2019-09-07 13:12:45,354 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 2653 transitions. Word has length 176 [2019-09-07 13:12:45,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:12:45,354 INFO L475 AbstractCegarLoop]: Abstraction has 1737 states and 2653 transitions. [2019-09-07 13:12:45,355 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:12:45,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 2653 transitions. [2019-09-07 13:12:45,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-09-07 13:12:45,362 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:12:45,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:12:45,363 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:12:45,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:12:45,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1806716390, now seen corresponding path program 1 times [2019-09-07 13:12:45,363 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:12:45,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:12:45,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:12:45,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:12:45,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:12:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:12:45,682 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:12:45,683 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:12:45,683 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 13:12:45,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:12:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:12:45,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 13:12:45,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:12:46,096 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-07 13:12:46,108 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:12:46,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 9 [2019-09-07 13:12:46,111 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:12:46,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:12:46,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:12:46,112 INFO L87 Difference]: Start difference. First operand 1737 states and 2653 transitions. Second operand 9 states. [2019-09-07 13:12:53,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:12:53,526 INFO L93 Difference]: Finished difference Result 17783 states and 36036 transitions. [2019-09-07 13:12:53,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-09-07 13:12:53,526 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 196 [2019-09-07 13:12:53,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:12:53,810 INFO L225 Difference]: With dead ends: 17783 [2019-09-07 13:12:53,810 INFO L226 Difference]: Without dead ends: 16052 [2019-09-07 13:12:53,832 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332 [2019-09-07 13:12:53,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16052 states. [2019-09-07 13:12:54,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16052 to 13820. [2019-09-07 13:12:54,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13820 states. [2019-09-07 13:12:54,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13820 states to 13820 states and 22650 transitions. [2019-09-07 13:12:54,554 INFO L78 Accepts]: Start accepts. Automaton has 13820 states and 22650 transitions. Word has length 196 [2019-09-07 13:12:54,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:12:54,556 INFO L475 AbstractCegarLoop]: Abstraction has 13820 states and 22650 transitions. [2019-09-07 13:12:54,556 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:12:54,556 INFO L276 IsEmpty]: Start isEmpty. Operand 13820 states and 22650 transitions. [2019-09-07 13:12:54,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-09-07 13:12:54,627 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:12:54,628 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:12:54,628 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:12:54,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:12:54,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1577484989, now seen corresponding path program 1 times [2019-09-07 13:12:54,629 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:12:54,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:12:54,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:12:54,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:12:54,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:12:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:12:54,801 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 13:12:54,802 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:12:54,802 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 13:12:54,822 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 13:12:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:12:55,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:12:55,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:12:55,123 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-09-07 13:12:55,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:12:55,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:12:55,139 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:12:55,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:12:55,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:12:55,139 INFO L87 Difference]: Start difference. First operand 13820 states and 22650 transitions. Second operand 9 states. [2019-09-07 13:12:57,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:12:57,875 INFO L93 Difference]: Finished difference Result 51076 states and 89902 transitions. [2019-09-07 13:12:57,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 13:12:57,876 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 215 [2019-09-07 13:12:57,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:12:58,297 INFO L225 Difference]: With dead ends: 51076 [2019-09-07 13:12:58,298 INFO L226 Difference]: Without dead ends: 37262 [2019-09-07 13:12:58,403 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:12:58,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37262 states. [2019-09-07 13:13:00,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37262 to 37110. [2019-09-07 13:13:00,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37110 states. [2019-09-07 13:13:00,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37110 states to 37110 states and 59266 transitions. [2019-09-07 13:13:00,620 INFO L78 Accepts]: Start accepts. Automaton has 37110 states and 59266 transitions. Word has length 215 [2019-09-07 13:13:00,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:13:00,620 INFO L475 AbstractCegarLoop]: Abstraction has 37110 states and 59266 transitions. [2019-09-07 13:13:00,621 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:13:00,621 INFO L276 IsEmpty]: Start isEmpty. Operand 37110 states and 59266 transitions. [2019-09-07 13:13:00,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-09-07 13:13:00,752 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:13:00,753 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:13:00,753 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:13:00,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:13:00,754 INFO L82 PathProgramCache]: Analyzing trace with hash -94601697, now seen corresponding path program 1 times [2019-09-07 13:13:00,754 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:13:00,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:13:00,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:13:00,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:13:00,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:13:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:13:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 53 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-07 13:13:00,894 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:13:00,894 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 13:13:00,909 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 13:13:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:13:01,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 13:13:01,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:13:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-09-07 13:13:01,154 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:13:01,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-09-07 13:13:01,158 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 13:13:01,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 13:13:01,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-07 13:13:01,159 INFO L87 Difference]: Start difference. First operand 37110 states and 59266 transitions. Second operand 6 states. [2019-09-07 13:13:03,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:13:03,955 INFO L93 Difference]: Finished difference Result 90192 states and 149234 transitions. [2019-09-07 13:13:03,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 13:13:03,956 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 218 [2019-09-07 13:13:03,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:13:04,352 INFO L225 Difference]: With dead ends: 90192 [2019-09-07 13:13:04,352 INFO L226 Difference]: Without dead ends: 53088 [2019-09-07 13:13:04,488 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-09-07 13:13:04,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53088 states. [2019-09-07 13:13:07,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53088 to 52791. [2019-09-07 13:13:07,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52791 states. [2019-09-07 13:13:07,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52791 states to 52791 states and 74372 transitions. [2019-09-07 13:13:07,222 INFO L78 Accepts]: Start accepts. Automaton has 52791 states and 74372 transitions. Word has length 218 [2019-09-07 13:13:07,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:13:07,222 INFO L475 AbstractCegarLoop]: Abstraction has 52791 states and 74372 transitions. [2019-09-07 13:13:07,230 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 13:13:07,231 INFO L276 IsEmpty]: Start isEmpty. Operand 52791 states and 74372 transitions. [2019-09-07 13:13:07,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-09-07 13:13:07,273 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:13:07,274 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:13:07,274 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:13:07,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:13:07,274 INFO L82 PathProgramCache]: Analyzing trace with hash -490776036, now seen corresponding path program 1 times [2019-09-07 13:13:07,275 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:13:07,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:13:07,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:13:07,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:13:07,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:13:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:13:07,416 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 71 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-07 13:13:07,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:13:07,416 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 13:13:07,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:13:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:13:07,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:13:07,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:13:07,711 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-07 13:13:07,726 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:13:07,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:13:07,728 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:13:07,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:13:07,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:13:07,729 INFO L87 Difference]: Start difference. First operand 52791 states and 74372 transitions. Second operand 9 states. [2019-09-07 13:13:15,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:13:15,102 INFO L93 Difference]: Finished difference Result 142691 states and 206616 transitions. [2019-09-07 13:13:15,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 13:13:15,103 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 232 [2019-09-07 13:13:15,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:13:15,545 INFO L225 Difference]: With dead ends: 142691 [2019-09-07 13:13:15,545 INFO L226 Difference]: Without dead ends: 89906 [2019-09-07 13:13:15,668 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-09-07 13:13:15,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89906 states. [2019-09-07 13:13:17,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89906 to 88808. [2019-09-07 13:13:17,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88808 states. [2019-09-07 13:13:18,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88808 states to 88808 states and 117863 transitions. [2019-09-07 13:13:18,164 INFO L78 Accepts]: Start accepts. Automaton has 88808 states and 117863 transitions. Word has length 232 [2019-09-07 13:13:18,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:13:18,165 INFO L475 AbstractCegarLoop]: Abstraction has 88808 states and 117863 transitions. [2019-09-07 13:13:18,165 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:13:18,165 INFO L276 IsEmpty]: Start isEmpty. Operand 88808 states and 117863 transitions. [2019-09-07 13:13:18,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2019-09-07 13:13:18,310 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:13:18,310 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:13:18,311 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:13:18,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:13:18,312 INFO L82 PathProgramCache]: Analyzing trace with hash -235664024, now seen corresponding path program 1 times [2019-09-07 13:13:18,312 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:13:18,312 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:13:18,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:13:18,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:13:18,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:13:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:13:18,761 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 120 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:13:18,762 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:13:18,762 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:13:18,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:13:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:13:19,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 1242 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 13:13:19,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:13:19,178 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-09-07 13:13:19,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:13:19,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2019-09-07 13:13:19,195 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 13:13:19,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 13:13:19,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:13:19,196 INFO L87 Difference]: Start difference. First operand 88808 states and 117863 transitions. Second operand 13 states. [2019-09-07 13:13:28,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:13:28,813 INFO L93 Difference]: Finished difference Result 326824 states and 490500 transitions. [2019-09-07 13:13:28,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-09-07 13:13:28,813 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 266 [2019-09-07 13:13:28,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:13:30,158 INFO L225 Difference]: With dead ends: 326824 [2019-09-07 13:13:30,158 INFO L226 Difference]: Without dead ends: 238058 [2019-09-07 13:13:30,345 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2019-09-07 13:13:30,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238058 states. [2019-09-07 13:13:41,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238058 to 231937. [2019-09-07 13:13:41,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231937 states. [2019-09-07 13:13:41,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231937 states to 231937 states and 307286 transitions. [2019-09-07 13:13:41,768 INFO L78 Accepts]: Start accepts. Automaton has 231937 states and 307286 transitions. Word has length 266 [2019-09-07 13:13:41,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:13:41,768 INFO L475 AbstractCegarLoop]: Abstraction has 231937 states and 307286 transitions. [2019-09-07 13:13:41,768 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 13:13:41,768 INFO L276 IsEmpty]: Start isEmpty. Operand 231937 states and 307286 transitions. [2019-09-07 13:13:41,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2019-09-07 13:13:41,949 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:13:41,950 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:13:41,950 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:13:41,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:13:41,951 INFO L82 PathProgramCache]: Analyzing trace with hash 2027407855, now seen corresponding path program 1 times [2019-09-07 13:13:41,951 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:13:41,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:13:41,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:13:41,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:13:41,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:13:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:13:42,371 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:13:42,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:13:42,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 13:13:42,372 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 13:13:42,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 13:13:42,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 13:13:42,373 INFO L87 Difference]: Start difference. First operand 231937 states and 307286 transitions. Second operand 6 states. [2019-09-07 13:13:49,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:13:49,121 INFO L93 Difference]: Finished difference Result 448130 states and 595446 transitions. [2019-09-07 13:13:49,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 13:13:49,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 294 [2019-09-07 13:13:49,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:13:49,840 INFO L225 Difference]: With dead ends: 448130 [2019-09-07 13:13:49,841 INFO L226 Difference]: Without dead ends: 232211 [2019-09-07 13:13:50,093 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 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 13:13:50,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232211 states. [2019-09-07 13:13:54,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232211 to 231969. [2019-09-07 13:13:54,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231969 states. [2019-09-07 13:13:55,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231969 states to 231969 states and 302449 transitions. [2019-09-07 13:13:55,227 INFO L78 Accepts]: Start accepts. Automaton has 231969 states and 302449 transitions. Word has length 294 [2019-09-07 13:13:55,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:13:55,228 INFO L475 AbstractCegarLoop]: Abstraction has 231969 states and 302449 transitions. [2019-09-07 13:13:55,228 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 13:13:55,228 INFO L276 IsEmpty]: Start isEmpty. Operand 231969 states and 302449 transitions. [2019-09-07 13:13:55,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2019-09-07 13:13:55,408 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:13:55,408 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:13:55,408 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:13:55,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:13:55,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1884512948, now seen corresponding path program 1 times [2019-09-07 13:13:55,409 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:13:55,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:13:55,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:13:55,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:13:55,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:13:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:13:55,820 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:13:55,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:13:55,820 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:13:55,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:13:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:13:56,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 1136 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-07 13:13:56,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:13:56,206 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:13:56,217 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:13:56,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:13:56,218 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:13:56,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:13:56,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:13:56,218 INFO L87 Difference]: Start difference. First operand 231969 states and 302449 transitions. Second operand 9 states. [2019-09-07 13:14:00,761 WARN L188 SmtUtils]: Spent 3.02 s on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2019-09-07 13:14:34,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:14:34,050 INFO L93 Difference]: Finished difference Result 823138 states and 1406679 transitions. [2019-09-07 13:14:34,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-09-07 13:14:34,051 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 315 [2019-09-07 13:14:34,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:14:39,264 INFO L225 Difference]: With dead ends: 823138 [2019-09-07 13:14:39,264 INFO L226 Difference]: Without dead ends: 591175 [2019-09-07 13:14:39,823 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=536, Invalid=2886, Unknown=0, NotChecked=0, Total=3422 [2019-09-07 13:14:40,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591175 states. [2019-09-07 13:15:08,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591175 to 518279. [2019-09-07 13:15:08,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518279 states. [2019-09-07 13:15:10,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518279 states to 518279 states and 648075 transitions. [2019-09-07 13:15:10,063 INFO L78 Accepts]: Start accepts. Automaton has 518279 states and 648075 transitions. Word has length 315 [2019-09-07 13:15:10,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:15:10,064 INFO L475 AbstractCegarLoop]: Abstraction has 518279 states and 648075 transitions. [2019-09-07 13:15:10,064 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:15:10,064 INFO L276 IsEmpty]: Start isEmpty. Operand 518279 states and 648075 transitions. [2019-09-07 13:15:17,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2019-09-07 13:15:17,819 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:15:17,820 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:15:17,820 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:15:17,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:15:17,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1819986149, now seen corresponding path program 1 times [2019-09-07 13:15:17,821 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:15:17,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:15:17,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:15:17,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:15:17,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:15:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:15:18,398 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 186 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:15:18,401 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:15:18,401 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) [2019-09-07 13:15:18,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:15:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:15:18,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-07 13:15:18,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:15:18,759 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:15:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-09-07 13:15:18,969 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:15:18,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2019-09-07 13:15:18,972 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-07 13:15:18,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-07 13:15:18,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2019-09-07 13:15:18,974 INFO L87 Difference]: Start difference. First operand 518279 states and 648075 transitions. Second operand 15 states. [2019-09-07 13:15:58,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:15:58,011 INFO L93 Difference]: Finished difference Result 1112486 states and 1549155 transitions. [2019-09-07 13:15:58,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2019-09-07 13:15:58,012 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 337 [2019-09-07 13:15:58,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:16:01,377 INFO L225 Difference]: With dead ends: 1112486 [2019-09-07 13:16:01,377 INFO L226 Difference]: Without dead ends: 595715 [2019-09-07 13:16:01,915 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14503 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4066, Invalid=28514, Unknown=0, NotChecked=0, Total=32580 [2019-09-07 13:16:02,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595715 states. [2019-09-07 13:16:19,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595715 to 566049. [2019-09-07 13:16:19,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566049 states. [2019-09-07 13:16:20,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566049 states to 566049 states and 698919 transitions. [2019-09-07 13:16:20,607 INFO L78 Accepts]: Start accepts. Automaton has 566049 states and 698919 transitions. Word has length 337 [2019-09-07 13:16:20,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:16:20,608 INFO L475 AbstractCegarLoop]: Abstraction has 566049 states and 698919 transitions. [2019-09-07 13:16:20,608 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-07 13:16:20,608 INFO L276 IsEmpty]: Start isEmpty. Operand 566049 states and 698919 transitions. [2019-09-07 13:16:21,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2019-09-07 13:16:21,166 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:16:21,166 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:16:21,166 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:16:21,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:16:21,167 INFO L82 PathProgramCache]: Analyzing trace with hash -360786907, now seen corresponding path program 1 times [2019-09-07 13:16:21,167 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:16:21,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:16:21,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:16:21,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:16:21,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:16:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:16:29,517 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 187 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:16:29,517 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:16:29,517 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 13:16:29,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:16:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:16:29,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-07 13:16:29,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:16:29,973 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 248 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:16:29,977 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:16:29,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2019-09-07 13:16:29,979 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-07 13:16:29,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-07 13:16:29,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-09-07 13:16:29,979 INFO L87 Difference]: Start difference. First operand 566049 states and 698919 transitions. Second operand 17 states. [2019-09-07 13:16:36,624 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2019-09-07 13:19:03,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:19:03,734 INFO L93 Difference]: Finished difference Result 1668210 states and 3382402 transitions. [2019-09-07 13:19:03,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2019-09-07 13:19:03,739 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 358 [2019-09-07 13:19:03,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:19:22,339 INFO L225 Difference]: With dead ends: 1668210 [2019-09-07 13:19:22,340 INFO L226 Difference]: Without dead ends: 1110948 [2019-09-07 13:19:24,502 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 353 SyntacticMatches, 1 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30760 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=7737, Invalid=60645, Unknown=0, NotChecked=0, Total=68382 [2019-09-07 13:19:25,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110948 states. [2019-09-07 13:21:11,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110948 to 902536. [2019-09-07 13:21:11,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 902536 states. [2019-09-07 13:21:14,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902536 states to 902536 states and 1119773 transitions. [2019-09-07 13:21:14,950 INFO L78 Accepts]: Start accepts. Automaton has 902536 states and 1119773 transitions. Word has length 358 [2019-09-07 13:21:14,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:21:14,950 INFO L475 AbstractCegarLoop]: Abstraction has 902536 states and 1119773 transitions. [2019-09-07 13:21:14,950 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-07 13:21:14,950 INFO L276 IsEmpty]: Start isEmpty. Operand 902536 states and 1119773 transitions.