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/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 07:36:45,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 07:36:45,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 07:36:45,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 07:36:45,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 07:36:45,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 07:36:45,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 07:36:45,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 07:36:45,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 07:36:45,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 07:36:45,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 07:36:45,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 07:36:45,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 07:36:45,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 07:36:45,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 07:36:45,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 07:36:45,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 07:36:45,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 07:36:45,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 07:36:45,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 07:36:45,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 07:36:45,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 07:36:45,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 07:36:45,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 07:36:45,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 07:36:45,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 07:36:45,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 07:36:45,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 07:36:45,853 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 [2019-09-08 07:36:45,869 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 07:36:45,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 07:36:45,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 07:36:45,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 07:36:45,870 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 07:36:45,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 07:36:45,871 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 07:36:45,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 07:36:45,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 07:36:45,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 07:36:45,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 07:36:45,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 07:36:45,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 07:36:45,874 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 07:36:45,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 07:36:45,874 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 07:36:45,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 07:36:45,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 07:36:45,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 07:36:45,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 07:36:45,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 07:36:45,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 07:36:45,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 07:36:45,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 07:36:45,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 07:36:45,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 07:36:45,876 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 07:36:45,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 07:36:45,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 07:36:45,926 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 07:36:45,943 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 07:36:45,948 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 07:36:45,949 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 07:36:45,950 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 07:36:45,950 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2019-09-08 07:36:46,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2fd06f9d/1407d169ec5e45daa345e1778f6cb061/FLAG1f4c276d5 [2019-09-08 07:36:46,530 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 07:36:46,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2019-09-08 07:36:46,556 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2fd06f9d/1407d169ec5e45daa345e1778f6cb061/FLAG1f4c276d5 [2019-09-08 07:36:46,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2fd06f9d/1407d169ec5e45daa345e1778f6cb061 [2019-09-08 07:36:46,854 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 07:36:46,856 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 07:36:46,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 07:36:46,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 07:36:46,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 07:36:46,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:36:46" (1/1) ... [2019-09-08 07:36:46,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d02a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:36:46, skipping insertion in model container [2019-09-08 07:36:46,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:36:46" (1/1) ... [2019-09-08 07:36:46,875 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 07:36:46,929 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 07:36:47,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 07:36:47,271 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 07:36:47,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 07:36:47,365 INFO L192 MainTranslator]: Completed translation [2019-09-08 07:36:47,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:36:47 WrapperNode [2019-09-08 07:36:47,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 07:36:47,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 07:36:47,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 07:36:47,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 07:36:47,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:36:47" (1/1) ... [2019-09-08 07:36:47,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:36:47" (1/1) ... [2019-09-08 07:36:47,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:36:47" (1/1) ... [2019-09-08 07:36:47,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:36:47" (1/1) ... [2019-09-08 07:36:47,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:36:47" (1/1) ... [2019-09-08 07:36:47,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:36:47" (1/1) ... [2019-09-08 07:36:47,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:36:47" (1/1) ... [2019-09-08 07:36:47,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 07:36:47,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 07:36:47,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 07:36:47,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 07:36:47,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:36:47" (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 [2019-09-08 07:36:47,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 07:36:47,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 07:36:47,486 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2019-09-08 07:36:47,486 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2019-09-08 07:36:47,486 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2019-09-08 07:36:47,486 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2019-09-08 07:36:47,486 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-09-08 07:36:47,486 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-09-08 07:36:47,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 07:36:47,487 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2019-09-08 07:36:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 07:36:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 07:36:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 07:36:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 07:36:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 07:36:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 07:36:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 07:36:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 07:36:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 07:36:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 07:36:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2019-09-08 07:36:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 07:36:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 07:36:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 07:36:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 07:36:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 07:36:48,196 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 07:36:48,197 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-08 07:36:48,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:36:48 BoogieIcfgContainer [2019-09-08 07:36:48,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 07:36:48,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 07:36:48,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 07:36:48,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 07:36:48,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 07:36:46" (1/3) ... [2019-09-08 07:36:48,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b300fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:36:48, skipping insertion in model container [2019-09-08 07:36:48,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:36:47" (2/3) ... [2019-09-08 07:36:48,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b300fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:36:48, skipping insertion in model container [2019-09-08 07:36:48,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:36:48" (3/3) ... [2019-09-08 07:36:48,210 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2019-09-08 07:36:48,221 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 07:36:48,232 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 07:36:48,247 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 07:36:48,274 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 07:36:48,275 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 07:36:48,275 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 07:36:48,275 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 07:36:48,276 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 07:36:48,276 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 07:36:48,276 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 07:36:48,276 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 07:36:48,276 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 07:36:48,298 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2019-09-08 07:36:48,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-09-08 07:36:48,307 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:36:48,308 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] [2019-09-08 07:36:48,310 INFO L418 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:36:48,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:36:48,315 INFO L82 PathProgramCache]: Analyzing trace with hash -985544471, now seen corresponding path program 1 times [2019-09-08 07:36:48,317 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:36:48,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:36:48,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:48,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:48,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:48,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:36:48,702 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:36:48,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:36:48,708 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:36:48,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:36:48,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:36:48,726 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 5 states. [2019-09-08 07:36:48,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:36:48,858 INFO L93 Difference]: Finished difference Result 224 states and 331 transitions. [2019-09-08 07:36:48,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 07:36:48,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2019-09-08 07:36:48,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:36:48,871 INFO L225 Difference]: With dead ends: 224 [2019-09-08 07:36:48,871 INFO L226 Difference]: Without dead ends: 123 [2019-09-08 07:36:48,875 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 07:36:48,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-09-08 07:36:48,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2019-09-08 07:36:48,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-09-08 07:36:48,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 162 transitions. [2019-09-08 07:36:48,924 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 162 transitions. Word has length 54 [2019-09-08 07:36:48,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:36:48,924 INFO L475 AbstractCegarLoop]: Abstraction has 123 states and 162 transitions. [2019-09-08 07:36:48,924 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:36:48,925 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 162 transitions. [2019-09-08 07:36:48,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-09-08 07:36:48,928 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:36:48,929 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] [2019-09-08 07:36:48,929 INFO L418 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:36:48,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:36:48,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1801507920, now seen corresponding path program 1 times [2019-09-08 07:36:48,930 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:36:48,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:36:48,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:48,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:48,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:49,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:36:49,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:36:49,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-09-08 07:36:49,345 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 07:36:49,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 07:36:49,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-09-08 07:36:49,347 INFO L87 Difference]: Start difference. First operand 123 states and 162 transitions. Second operand 11 states. [2019-09-08 07:36:52,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:36:52,643 INFO L93 Difference]: Finished difference Result 955 states and 1394 transitions. [2019-09-08 07:36:52,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-09-08 07:36:52,644 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2019-09-08 07:36:52,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:36:52,658 INFO L225 Difference]: With dead ends: 955 [2019-09-08 07:36:52,658 INFO L226 Difference]: Without dead ends: 868 [2019-09-08 07:36:52,661 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=1007, Unknown=0, NotChecked=0, Total=1332 [2019-09-08 07:36:52,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2019-09-08 07:36:52,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 738. [2019-09-08 07:36:52,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2019-09-08 07:36:52,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1073 transitions. [2019-09-08 07:36:52,789 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1073 transitions. Word has length 77 [2019-09-08 07:36:52,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:36:52,790 INFO L475 AbstractCegarLoop]: Abstraction has 738 states and 1073 transitions. [2019-09-08 07:36:52,790 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 07:36:52,790 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1073 transitions. [2019-09-08 07:36:52,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-09-08 07:36:52,796 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:36:52,796 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] [2019-09-08 07:36:52,796 INFO L418 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:36:52,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:36:52,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1577359652, now seen corresponding path program 1 times [2019-09-08 07:36:52,797 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:36:52,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:36:52,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:52,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:52,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:53,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:36:53,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:36:53,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-09-08 07:36:53,032 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 07:36:53,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 07:36:53,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-09-08 07:36:53,033 INFO L87 Difference]: Start difference. First operand 738 states and 1073 transitions. Second operand 11 states. [2019-09-08 07:36:53,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:36:53,206 INFO L93 Difference]: Finished difference Result 856 states and 1256 transitions. [2019-09-08 07:36:53,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-08 07:36:53,208 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2019-09-08 07:36:53,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:36:53,221 INFO L225 Difference]: With dead ends: 856 [2019-09-08 07:36:53,221 INFO L226 Difference]: Without dead ends: 854 [2019-09-08 07:36:53,225 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-09-08 07:36:53,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2019-09-08 07:36:53,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 792. [2019-09-08 07:36:53,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2019-09-08 07:36:53,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1127 transitions. [2019-09-08 07:36:53,338 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1127 transitions. Word has length 78 [2019-09-08 07:36:53,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:36:53,340 INFO L475 AbstractCegarLoop]: Abstraction has 792 states and 1127 transitions. [2019-09-08 07:36:53,340 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 07:36:53,340 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1127 transitions. [2019-09-08 07:36:53,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-09-08 07:36:53,354 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:36:53,355 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] [2019-09-08 07:36:53,355 INFO L418 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:36:53,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:36:53,356 INFO L82 PathProgramCache]: Analyzing trace with hash 503716008, now seen corresponding path program 1 times [2019-09-08 07:36:53,356 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:36:53,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:36:53,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:53,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:53,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:36:53,551 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:36:53,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 07:36:53,553 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 07:36:53,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 07:36:53,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-08 07:36:53,554 INFO L87 Difference]: Start difference. First operand 792 states and 1127 transitions. Second operand 7 states. [2019-09-08 07:36:54,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:36:54,353 INFO L93 Difference]: Finished difference Result 3526 states and 5127 transitions. [2019-09-08 07:36:54,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:36:54,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2019-09-08 07:36:54,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:36:54,371 INFO L225 Difference]: With dead ends: 3526 [2019-09-08 07:36:54,371 INFO L226 Difference]: Without dead ends: 2770 [2019-09-08 07:36:54,375 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:36:54,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2019-09-08 07:36:54,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 2764. [2019-09-08 07:36:54,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2764 states. [2019-09-08 07:36:54,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3990 transitions. [2019-09-08 07:36:54,521 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3990 transitions. Word has length 79 [2019-09-08 07:36:54,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:36:54,522 INFO L475 AbstractCegarLoop]: Abstraction has 2764 states and 3990 transitions. [2019-09-08 07:36:54,522 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 07:36:54,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3990 transitions. [2019-09-08 07:36:54,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-08 07:36:54,525 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:36:54,525 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] [2019-09-08 07:36:54,525 INFO L418 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:36:54,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:36:54,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1624312736, now seen corresponding path program 1 times [2019-09-08 07:36:54,526 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:36:54,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:36:54,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:54,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:54,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:36:54,634 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:36:54,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:36:54,634 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:36:54,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:36:54,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:36:54,635 INFO L87 Difference]: Start difference. First operand 2764 states and 3990 transitions. Second operand 9 states. [2019-09-08 07:36:55,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:36:55,423 INFO L93 Difference]: Finished difference Result 5927 states and 8647 transitions. [2019-09-08 07:36:55,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:36:55,424 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2019-09-08 07:36:55,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:36:55,451 INFO L225 Difference]: With dead ends: 5927 [2019-09-08 07:36:55,452 INFO L226 Difference]: Without dead ends: 3832 [2019-09-08 07:36:55,459 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:36:55,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2019-09-08 07:36:55,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 2877. [2019-09-08 07:36:55,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2877 states. [2019-09-08 07:36:55,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 4154 transitions. [2019-09-08 07:36:55,661 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 4154 transitions. Word has length 80 [2019-09-08 07:36:55,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:36:55,661 INFO L475 AbstractCegarLoop]: Abstraction has 2877 states and 4154 transitions. [2019-09-08 07:36:55,662 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:36:55,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 4154 transitions. [2019-09-08 07:36:55,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-08 07:36:55,664 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:36:55,665 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] [2019-09-08 07:36:55,665 INFO L418 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:36:55,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:36:55,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1499169980, now seen corresponding path program 1 times [2019-09-08 07:36:55,666 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:36:55,666 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:36:55,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:55,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:55,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:36:55,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:36:55,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:36:55,787 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:36:55,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:36:55,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:36:55,788 INFO L87 Difference]: Start difference. First operand 2877 states and 4154 transitions. Second operand 9 states. [2019-09-08 07:36:56,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:36:56,766 INFO L93 Difference]: Finished difference Result 6995 states and 10128 transitions. [2019-09-08 07:36:56,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:36:56,767 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2019-09-08 07:36:56,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:36:56,794 INFO L225 Difference]: With dead ends: 6995 [2019-09-08 07:36:56,794 INFO L226 Difference]: Without dead ends: 4175 [2019-09-08 07:36:56,803 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:36:56,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4175 states. [2019-09-08 07:36:57,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4175 to 2873. [2019-09-08 07:36:57,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2873 states. [2019-09-08 07:36:57,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4146 transitions. [2019-09-08 07:36:57,036 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4146 transitions. Word has length 80 [2019-09-08 07:36:57,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:36:57,036 INFO L475 AbstractCegarLoop]: Abstraction has 2873 states and 4146 transitions. [2019-09-08 07:36:57,036 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:36:57,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4146 transitions. [2019-09-08 07:36:57,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-08 07:36:57,040 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:36:57,040 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] [2019-09-08 07:36:57,040 INFO L418 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:36:57,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:36:57,041 INFO L82 PathProgramCache]: Analyzing trace with hash 852886168, now seen corresponding path program 1 times [2019-09-08 07:36:57,041 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:36:57,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:36:57,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:57,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:57,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:57,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:36:57,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:36:57,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:36:57,165 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:36:57,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:36:57,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:36:57,165 INFO L87 Difference]: Start difference. First operand 2873 states and 4146 transitions. Second operand 9 states. [2019-09-08 07:36:57,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:36:57,920 INFO L93 Difference]: Finished difference Result 6403 states and 9215 transitions. [2019-09-08 07:36:57,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:36:57,921 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2019-09-08 07:36:57,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:36:57,944 INFO L225 Difference]: With dead ends: 6403 [2019-09-08 07:36:57,945 INFO L226 Difference]: Without dead ends: 3623 [2019-09-08 07:36:57,954 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:36:57,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2019-09-08 07:36:58,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 2870. [2019-09-08 07:36:58,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2870 states. [2019-09-08 07:36:58,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 4139 transitions. [2019-09-08 07:36:58,164 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 4139 transitions. Word has length 80 [2019-09-08 07:36:58,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:36:58,164 INFO L475 AbstractCegarLoop]: Abstraction has 2870 states and 4139 transitions. [2019-09-08 07:36:58,165 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:36:58,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 4139 transitions. [2019-09-08 07:36:58,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-08 07:36:58,167 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:36:58,167 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] [2019-09-08 07:36:58,168 INFO L418 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:36:58,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:36:58,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1238151598, now seen corresponding path program 1 times [2019-09-08 07:36:58,168 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:36:58,168 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:36:58,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:58,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:58,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:58,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:36:58,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:36:58,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:36:58,296 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:36:58,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:36:58,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:36:58,297 INFO L87 Difference]: Start difference. First operand 2870 states and 4139 transitions. Second operand 9 states. [2019-09-08 07:36:59,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:36:59,217 INFO L93 Difference]: Finished difference Result 5817 states and 8321 transitions. [2019-09-08 07:36:59,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:36:59,218 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2019-09-08 07:36:59,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:36:59,239 INFO L225 Difference]: With dead ends: 5817 [2019-09-08 07:36:59,239 INFO L226 Difference]: Without dead ends: 3074 [2019-09-08 07:36:59,252 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:36:59,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2019-09-08 07:36:59,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 2884. [2019-09-08 07:36:59,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2884 states. [2019-09-08 07:36:59,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 4158 transitions. [2019-09-08 07:36:59,414 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 4158 transitions. Word has length 80 [2019-09-08 07:36:59,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:36:59,416 INFO L475 AbstractCegarLoop]: Abstraction has 2884 states and 4158 transitions. [2019-09-08 07:36:59,417 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:36:59,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 4158 transitions. [2019-09-08 07:36:59,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-09-08 07:36:59,425 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:36:59,425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:36:59,426 INFO L418 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:36:59,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:36:59,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1473763509, now seen corresponding path program 1 times [2019-09-08 07:36:59,426 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:36:59,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:36:59,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:59,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:59,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-09-08 07:36:59,586 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:36:59,586 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 [2019-09-08 07:36:59,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:59,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 07:36:59,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:36:59,922 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-09-08 07:36:59,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:36:59,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-08 07:36:59,930 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:36:59,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:36:59,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:36:59,932 INFO L87 Difference]: Start difference. First operand 2884 states and 4158 transitions. Second operand 8 states. [2019-09-08 07:37:00,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:37:00,874 INFO L93 Difference]: Finished difference Result 6376 states and 9236 transitions. [2019-09-08 07:37:00,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:37:00,875 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2019-09-08 07:37:00,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:37:00,909 INFO L225 Difference]: With dead ends: 6376 [2019-09-08 07:37:00,909 INFO L226 Difference]: Without dead ends: 4313 [2019-09-08 07:37:00,919 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:37:00,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4313 states. [2019-09-08 07:37:01,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4313 to 4151. [2019-09-08 07:37:01,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4151 states. [2019-09-08 07:37:01,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4151 states to 4151 states and 5927 transitions. [2019-09-08 07:37:01,245 INFO L78 Accepts]: Start accepts. Automaton has 4151 states and 5927 transitions. Word has length 123 [2019-09-08 07:37:01,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:37:01,247 INFO L475 AbstractCegarLoop]: Abstraction has 4151 states and 5927 transitions. [2019-09-08 07:37:01,247 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:37:01,247 INFO L276 IsEmpty]: Start isEmpty. Operand 4151 states and 5927 transitions. [2019-09-08 07:37:01,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-09-08 07:37:01,250 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:37:01,251 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:37:01,251 INFO L418 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:37:01,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:37:01,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1251275679, now seen corresponding path program 1 times [2019-09-08 07:37:01,251 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:37:01,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:37:01,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:37:01,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:37:01,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:37:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:37:01,389 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-09-08 07:37:01,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:37:01,391 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) [2019-09-08 07:37:01,408 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 [2019-09-08 07:37:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:37:01,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 07:37:01,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:37:01,669 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:37:01,683 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:37:01,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-08 07:37:01,684 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 07:37:01,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 07:37:01,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:37:01,687 INFO L87 Difference]: Start difference. First operand 4151 states and 5927 transitions. Second operand 4 states. [2019-09-08 07:37:02,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:37:02,116 INFO L93 Difference]: Finished difference Result 11664 states and 16829 transitions. [2019-09-08 07:37:02,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 07:37:02,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-09-08 07:37:02,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:37:02,178 INFO L225 Difference]: With dead ends: 11664 [2019-09-08 07:37:02,178 INFO L226 Difference]: Without dead ends: 7613 [2019-09-08 07:37:02,196 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:37:02,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7613 states. [2019-09-08 07:37:02,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7613 to 7083. [2019-09-08 07:37:02,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7083 states. [2019-09-08 07:37:02,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7083 states to 7083 states and 10004 transitions. [2019-09-08 07:37:02,678 INFO L78 Accepts]: Start accepts. Automaton has 7083 states and 10004 transitions. Word has length 125 [2019-09-08 07:37:02,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:37:02,679 INFO L475 AbstractCegarLoop]: Abstraction has 7083 states and 10004 transitions. [2019-09-08 07:37:02,679 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 07:37:02,680 INFO L276 IsEmpty]: Start isEmpty. Operand 7083 states and 10004 transitions. [2019-09-08 07:37:02,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-09-08 07:37:02,694 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:37:02,694 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:37:02,694 INFO L418 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:37:02,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:37:02,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1376418435, now seen corresponding path program 1 times [2019-09-08 07:37:02,695 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:37:02,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:37:02,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:37:02,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:37:02,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:37:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:37:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-08 07:37:02,955 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:37:02,955 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 [2019-09-08 07:37:02,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:37:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:37:03,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-08 07:37:03,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:37:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 25 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:37:03,404 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:37:03,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 13 [2019-09-08 07:37:03,405 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 07:37:03,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 07:37:03,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-09-08 07:37:03,406 INFO L87 Difference]: Start difference. First operand 7083 states and 10004 transitions. Second operand 13 states. [2019-09-08 07:37:06,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:37:06,602 INFO L93 Difference]: Finished difference Result 30219 states and 43342 transitions. [2019-09-08 07:37:06,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-09-08 07:37:06,603 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 125 [2019-09-08 07:37:06,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:37:06,726 INFO L225 Difference]: With dead ends: 30219 [2019-09-08 07:37:06,726 INFO L226 Difference]: Without dead ends: 23290 [2019-09-08 07:37:06,762 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=504, Invalid=1476, Unknown=0, NotChecked=0, Total=1980 [2019-09-08 07:37:06,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23290 states. [2019-09-08 07:37:07,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23290 to 18988. [2019-09-08 07:37:07,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18988 states. [2019-09-08 07:37:08,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18988 states to 18988 states and 26251 transitions. [2019-09-08 07:37:08,040 INFO L78 Accepts]: Start accepts. Automaton has 18988 states and 26251 transitions. Word has length 125 [2019-09-08 07:37:08,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:37:08,041 INFO L475 AbstractCegarLoop]: Abstraction has 18988 states and 26251 transitions. [2019-09-08 07:37:08,041 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 07:37:08,041 INFO L276 IsEmpty]: Start isEmpty. Operand 18988 states and 26251 transitions. [2019-09-08 07:37:08,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-09-08 07:37:08,047 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:37:08,048 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:37:08,048 INFO L418 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:37:08,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:37:08,049 INFO L82 PathProgramCache]: Analyzing trace with hash 832874959, now seen corresponding path program 1 times [2019-09-08 07:37:08,049 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:37:08,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:37:08,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:37:08,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:37:08,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:37:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:37:08,150 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-08 07:37:08,150 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:37:08,150 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) [2019-09-08 07:37:08,166 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 [2019-09-08 07:37:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:37:08,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-08 07:37:08,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:37:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:37:09,182 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:37:09,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 13 [2019-09-08 07:37:09,183 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 07:37:09,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 07:37:09,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-09-08 07:37:09,187 INFO L87 Difference]: Start difference. First operand 18988 states and 26251 transitions. Second operand 13 states. [2019-09-08 07:37:13,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:37:13,314 INFO L93 Difference]: Finished difference Result 92972 states and 131251 transitions. [2019-09-08 07:37:13,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-09-08 07:37:13,315 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 126 [2019-09-08 07:37:13,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:37:13,677 INFO L225 Difference]: With dead ends: 92972 [2019-09-08 07:37:13,677 INFO L226 Difference]: Without dead ends: 74300 [2019-09-08 07:37:13,758 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=504, Invalid=1476, Unknown=0, NotChecked=0, Total=1980 [2019-09-08 07:37:13,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74300 states. [2019-09-08 07:37:18,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74300 to 63488. [2019-09-08 07:37:18,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63488 states. [2019-09-08 07:37:18,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63488 states to 63488 states and 86412 transitions. [2019-09-08 07:37:18,877 INFO L78 Accepts]: Start accepts. Automaton has 63488 states and 86412 transitions. Word has length 126 [2019-09-08 07:37:18,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:37:18,877 INFO L475 AbstractCegarLoop]: Abstraction has 63488 states and 86412 transitions. [2019-09-08 07:37:18,877 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 07:37:18,877 INFO L276 IsEmpty]: Start isEmpty. Operand 63488 states and 86412 transitions. [2019-09-08 07:37:18,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-09-08 07:37:18,896 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:37:18,897 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] [2019-09-08 07:37:18,897 INFO L418 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:37:18,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:37:18,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1071552111, now seen corresponding path program 1 times [2019-09-08 07:37:18,898 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:37:18,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:37:18,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:37:18,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:37:18,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:37:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:37:18,984 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-09-08 07:37:18,985 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:37:18,985 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 [2019-09-08 07:37:19,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:37:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:37:19,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-08 07:37:19,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:37:19,300 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:37:19,314 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:37:19,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 13 [2019-09-08 07:37:19,315 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 07:37:19,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 07:37:19,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-09-08 07:37:19,316 INFO L87 Difference]: Start difference. First operand 63488 states and 86412 transitions. Second operand 13 states. [2019-09-08 07:37:29,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:37:29,301 INFO L93 Difference]: Finished difference Result 289141 states and 399830 transitions. [2019-09-08 07:37:29,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-09-08 07:37:29,302 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 127 [2019-09-08 07:37:29,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:37:30,164 INFO L225 Difference]: With dead ends: 289141 [2019-09-08 07:37:30,165 INFO L226 Difference]: Without dead ends: 226251 [2019-09-08 07:37:30,384 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=504, Invalid=1476, Unknown=0, NotChecked=0, Total=1980 [2019-09-08 07:37:30,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226251 states. [2019-09-08 07:37:46,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226251 to 211548. [2019-09-08 07:37:46,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211548 states. [2019-09-08 07:37:47,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211548 states to 211548 states and 284257 transitions. [2019-09-08 07:37:47,295 INFO L78 Accepts]: Start accepts. Automaton has 211548 states and 284257 transitions. Word has length 127 [2019-09-08 07:37:47,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:37:47,296 INFO L475 AbstractCegarLoop]: Abstraction has 211548 states and 284257 transitions. [2019-09-08 07:37:47,296 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 07:37:47,296 INFO L276 IsEmpty]: Start isEmpty. Operand 211548 states and 284257 transitions. [2019-09-08 07:37:47,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-09-08 07:37:47,354 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:37:47,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:37:47,355 INFO L418 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:37:47,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:37:47,355 INFO L82 PathProgramCache]: Analyzing trace with hash 45219836, now seen corresponding path program 1 times [2019-09-08 07:37:47,355 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:37:47,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:37:47,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:37:47,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:37:47,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:37:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:37:47,480 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 07:37:47,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:37:47,480 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 [2019-09-08 07:37:47,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:37:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:37:47,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-08 07:37:47,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:37:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:37:47,841 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:37:47,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2019-09-08 07:37:47,842 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-08 07:37:47,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-08 07:37:47,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2019-09-08 07:37:47,843 INFO L87 Difference]: Start difference. First operand 211548 states and 284257 transitions. Second operand 18 states. [2019-09-08 07:38:01,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:38:01,127 INFO L93 Difference]: Finished difference Result 398704 states and 533895 transitions. [2019-09-08 07:38:01,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-08 07:38:01,127 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 129 [2019-09-08 07:38:01,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:38:02,011 INFO L225 Difference]: With dead ends: 398704 [2019-09-08 07:38:02,012 INFO L226 Difference]: Without dead ends: 319754 [2019-09-08 07:38:02,176 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2019-09-08 07:38:02,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319754 states. [2019-09-08 07:38:22,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319754 to 317619. [2019-09-08 07:38:22,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317619 states. [2019-09-08 07:38:23,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317619 states to 317619 states and 424863 transitions. [2019-09-08 07:38:23,786 INFO L78 Accepts]: Start accepts. Automaton has 317619 states and 424863 transitions. Word has length 129 [2019-09-08 07:38:23,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:38:23,787 INFO L475 AbstractCegarLoop]: Abstraction has 317619 states and 424863 transitions. [2019-09-08 07:38:23,787 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-08 07:38:23,787 INFO L276 IsEmpty]: Start isEmpty. Operand 317619 states and 424863 transitions. [2019-09-08 07:38:23,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-09-08 07:38:23,854 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:38:23,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:38:23,855 INFO L418 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:38:23,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:38:23,855 INFO L82 PathProgramCache]: Analyzing trace with hash -370322024, now seen corresponding path program 1 times [2019-09-08 07:38:23,855 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:38:23,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:38:23,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:38:23,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:38:23,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:38:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:38:23,919 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-08 07:38:23,919 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:38:23,919 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) [2019-09-08 07:38:23,933 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 [2019-09-08 07:38:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:38:24,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 07:38:24,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:38:24,076 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:38:24,090 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:38:24,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-08 07:38:24,091 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 07:38:24,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 07:38:24,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:38:24,092 INFO L87 Difference]: Start difference. First operand 317619 states and 424863 transitions. Second operand 4 states. [2019-09-08 07:38:48,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:38:48,557 INFO L93 Difference]: Finished difference Result 748442 states and 1012167 transitions. [2019-09-08 07:38:48,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 07:38:48,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2019-09-08 07:38:48,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:38:51,216 INFO L225 Difference]: With dead ends: 748442 [2019-09-08 07:38:51,216 INFO L226 Difference]: Without dead ends: 431736 [2019-09-08 07:38:51,830 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:38:52,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431736 states. [2019-09-08 07:39:18,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431736 to 389287. [2019-09-08 07:39:18,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389287 states. [2019-09-08 07:39:19,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389287 states to 389287 states and 509626 transitions. [2019-09-08 07:39:19,730 INFO L78 Accepts]: Start accepts. Automaton has 389287 states and 509626 transitions. Word has length 129 [2019-09-08 07:39:19,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:39:19,731 INFO L475 AbstractCegarLoop]: Abstraction has 389287 states and 509626 transitions. [2019-09-08 07:39:19,731 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 07:39:19,731 INFO L276 IsEmpty]: Start isEmpty. Operand 389287 states and 509626 transitions. [2019-09-08 07:39:19,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-09-08 07:39:19,778 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:39:19,778 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:39:19,778 INFO L418 AbstractCegarLoop]: === Iteration 16 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:39:19,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:39:19,779 INFO L82 PathProgramCache]: Analyzing trace with hash -919477318, now seen corresponding path program 1 times [2019-09-08 07:39:19,779 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:39:19,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:39:19,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:39:19,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:39:19,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:39:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:39:19,858 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-08 07:39:19,859 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:39:19,859 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) [2019-09-08 07:39:19,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:39:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:39:19,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 07:39:19,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:39:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:39:20,037 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:39:20,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-08 07:39:20,041 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 07:39:20,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 07:39:20,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:39:20,042 INFO L87 Difference]: Start difference. First operand 389287 states and 509626 transitions. Second operand 4 states. [2019-09-08 07:39:54,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:39:54,518 INFO L93 Difference]: Finished difference Result 868907 states and 1148160 transitions. [2019-09-08 07:39:54,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 07:39:54,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2019-09-08 07:39:54,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:39:55,719 INFO L225 Difference]: With dead ends: 868907 [2019-09-08 07:39:55,719 INFO L226 Difference]: Without dead ends: 481656 [2019-09-08 07:39:56,183 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:39:56,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481656 states. [2019-09-08 07:40:30,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481656 to 452112. [2019-09-08 07:40:30,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452112 states. [2019-09-08 07:40:31,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452112 states to 452112 states and 573016 transitions. [2019-09-08 07:40:31,103 INFO L78 Accepts]: Start accepts. Automaton has 452112 states and 573016 transitions. Word has length 129 [2019-09-08 07:40:31,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:40:31,104 INFO L475 AbstractCegarLoop]: Abstraction has 452112 states and 573016 transitions. [2019-09-08 07:40:31,104 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 07:40:31,104 INFO L276 IsEmpty]: Start isEmpty. Operand 452112 states and 573016 transitions. [2019-09-08 07:40:31,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-09-08 07:40:31,180 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:40:31,180 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:40:31,180 INFO L418 AbstractCegarLoop]: === Iteration 17 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:40:31,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:40:31,180 INFO L82 PathProgramCache]: Analyzing trace with hash 232437784, now seen corresponding path program 1 times [2019-09-08 07:40:31,180 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:40:31,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:40:31,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:31,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:40:31,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:40:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-08 07:40:31,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:40:31,256 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:40:31,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:40:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:40:31,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 07:40:31,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:40:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:40:31,412 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:40:31,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-08 07:40:31,414 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 07:40:31,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 07:40:31,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:40:31,415 INFO L87 Difference]: Start difference. First operand 452112 states and 573016 transitions. Second operand 4 states. [2019-09-08 07:41:15,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:41:15,331 INFO L93 Difference]: Finished difference Result 997179 states and 1278330 transitions. [2019-09-08 07:41:15,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 07:41:15,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2019-09-08 07:41:15,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:41:16,828 INFO L225 Difference]: With dead ends: 997179 [2019-09-08 07:41:16,829 INFO L226 Difference]: Without dead ends: 551123 [2019-09-08 07:41:17,945 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:41:18,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551123 states. [2019-09-08 07:41:57,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551123 to 520945. [2019-09-08 07:41:57,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520945 states. [2019-09-08 07:42:10,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520945 states to 520945 states and 636718 transitions. [2019-09-08 07:42:11,011 INFO L78 Accepts]: Start accepts. Automaton has 520945 states and 636718 transitions. Word has length 129 [2019-09-08 07:42:11,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:42:11,011 INFO L475 AbstractCegarLoop]: Abstraction has 520945 states and 636718 transitions. [2019-09-08 07:42:11,011 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 07:42:11,012 INFO L276 IsEmpty]: Start isEmpty. Operand 520945 states and 636718 transitions. [2019-09-08 07:42:11,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-09-08 07:42:11,126 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:42:11,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:42:11,126 INFO L418 AbstractCegarLoop]: === Iteration 18 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:42:11,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:42:11,127 INFO L82 PathProgramCache]: Analyzing trace with hash -970361389, now seen corresponding path program 1 times [2019-09-08 07:42:11,127 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:42:11,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:42:11,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:42:11,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:42:11,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:42:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:42:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-08 07:42:11,320 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:42:11,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-09-08 07:42:11,320 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 07:42:11,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 07:42:11,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-09-08 07:42:11,322 INFO L87 Difference]: Start difference. First operand 520945 states and 636718 transitions. Second operand 11 states. [2019-09-08 07:43:03,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:43:03,945 INFO L93 Difference]: Finished difference Result 908687 states and 1116410 transitions. [2019-09-08 07:43:03,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-09-08 07:43:03,946 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 130 [2019-09-08 07:43:03,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:43:07,326 INFO L225 Difference]: With dead ends: 908687 [2019-09-08 07:43:07,326 INFO L226 Difference]: Without dead ends: 806350 [2019-09-08 07:43:07,654 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=575, Invalid=2287, Unknown=0, NotChecked=0, Total=2862 [2019-09-08 07:43:08,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806350 states. [2019-09-08 07:44:16,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806350 to 708626. [2019-09-08 07:44:16,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708626 states. [2019-09-08 07:44:18,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708626 states to 708626 states and 866113 transitions. [2019-09-08 07:44:18,322 INFO L78 Accepts]: Start accepts. Automaton has 708626 states and 866113 transitions. Word has length 130 [2019-09-08 07:44:18,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:44:18,323 INFO L475 AbstractCegarLoop]: Abstraction has 708626 states and 866113 transitions. [2019-09-08 07:44:18,323 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 07:44:18,323 INFO L276 IsEmpty]: Start isEmpty. Operand 708626 states and 866113 transitions. [2019-09-08 07:44:18,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-09-08 07:44:18,479 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:44:18,479 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:44:18,479 INFO L418 AbstractCegarLoop]: === Iteration 19 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:44:18,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:44:18,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1355732575, now seen corresponding path program 1 times [2019-09-08 07:44:18,480 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:44:18,480 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:44:18,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:44:18,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:44:18,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:44:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:44:18,676 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-08 07:44:18,676 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:44:18,676 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:44:18,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:44:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:44:20,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-08 07:44:20,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:44:20,336 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 07:44:20,341 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:44:20,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2019-09-08 07:44:20,342 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-08 07:44:20,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-08 07:44:20,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2019-09-08 07:44:20,342 INFO L87 Difference]: Start difference. First operand 708626 states and 866113 transitions. Second operand 22 states. [2019-09-08 07:45:35,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:45:35,776 INFO L93 Difference]: Finished difference Result 1087175 states and 1335065 transitions. [2019-09-08 07:45:35,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-09-08 07:45:35,777 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 130 [2019-09-08 07:45:35,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:45:39,222 INFO L225 Difference]: With dead ends: 1087175 [2019-09-08 07:45:39,222 INFO L226 Difference]: Without dead ends: 972001 [2019-09-08 07:45:39,570 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=788, Invalid=3502, Unknown=0, NotChecked=0, Total=4290 [2019-09-08 07:45:40,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972001 states.