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-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:44:01,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:44:01,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:44:01,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:44:01,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:44:01,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:44:01,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:44:01,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:44:01,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:44:01,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:44:01,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:44:01,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:44:01,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:44:01,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:44:01,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:44:01,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:44:01,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:44:01,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:44:01,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:44:01,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:44:01,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:44:01,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:44:01,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:44:01,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:44:01,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:44:01,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:44:01,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:44:01,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:44:01,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:44:01,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:44:01,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:44:01,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:44:01,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:44:01,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:44:01,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:44:01,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:44:01,869 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 [2019-10-14 23:44:01,891 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:44:01,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:44:01,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:44:01,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:44:01,894 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:44:01,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:44:01,894 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:44:01,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:44:01,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:44:01,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:44:01,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:44:01,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:44:01,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:44:01,897 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:44:01,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:44:01,897 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:44:01,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:44:01,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:44:01,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:44:01,898 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:44:01,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:44:01,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:44:01,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:44:01,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:44:01,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:44:01,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:44:01,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:44:01,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:44:01,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:44:02,183 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:44:02,195 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:44:02,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:44:02,200 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:44:02,200 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:44:02,201 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-10-14 23:44:02,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2afb21163/7367d62fa6174d3aa2d3c71655a48056/FLAG7c768bda6 [2019-10-14 23:44:02,813 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:44:02,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-10-14 23:44:02,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2afb21163/7367d62fa6174d3aa2d3c71655a48056/FLAG7c768bda6 [2019-10-14 23:44:03,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2afb21163/7367d62fa6174d3aa2d3c71655a48056 [2019-10-14 23:44:03,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:44:03,103 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:44:03,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:44:03,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:44:03,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:44:03,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:03" (1/1) ... [2019-10-14 23:44:03,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d271b69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:03, skipping insertion in model container [2019-10-14 23:44:03,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:03" (1/1) ... [2019-10-14 23:44:03,118 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:44:03,181 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:44:03,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:44:03,731 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:44:03,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:44:03,914 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:44:03,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:03 WrapperNode [2019-10-14 23:44:03,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:44:03,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:44:03,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:44:03,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:44:03,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:03" (1/1) ... [2019-10-14 23:44:03,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:03" (1/1) ... [2019-10-14 23:44:03,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:03" (1/1) ... [2019-10-14 23:44:03,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:03" (1/1) ... [2019-10-14 23:44:03,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:03" (1/1) ... [2019-10-14 23:44:04,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:03" (1/1) ... [2019-10-14 23:44:04,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:03" (1/1) ... [2019-10-14 23:44:04,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:44:04,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:44:04,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:44:04,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:44:04,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:03" (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 [2019-10-14 23:44:04,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:44:04,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:44:04,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:44:04,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:44:04,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-14 23:44:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-14 23:44:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-14 23:44:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:44:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-14 23:44:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-14 23:44:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-14 23:44:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-14 23:44:04,106 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-14 23:44:04,106 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-14 23:44:04,107 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-14 23:44:04,107 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:44:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:44:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:44:05,642 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:44:05,643 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:44:05,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:05 BoogieIcfgContainer [2019-10-14 23:44:05,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:44:05,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:44:05,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:44:05,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:44:05,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:44:03" (1/3) ... [2019-10-14 23:44:05,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b99a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:05, skipping insertion in model container [2019-10-14 23:44:05,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:03" (2/3) ... [2019-10-14 23:44:05,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b99a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:05, skipping insertion in model container [2019-10-14 23:44:05,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:05" (3/3) ... [2019-10-14 23:44:05,653 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-10-14 23:44:05,664 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:44:05,688 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:44:05,702 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:44:05,749 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:44:05,749 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:44:05,749 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:44:05,749 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:44:05,750 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:44:05,750 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:44:05,750 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:44:05,750 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:44:05,783 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states. [2019-10-14 23:44:05,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-14 23:44:05,800 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:05,802 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:05,804 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:05,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:05,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1850165601, now seen corresponding path program 1 times [2019-10-14 23:44:05,816 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:05,816 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772435020] [2019-10-14 23:44:05,817 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:05,817 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:05,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:06,725 WARN L191 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:44:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:06,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:06,810 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772435020] [2019-10-14 23:44:06,811 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:06,811 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:44:06,813 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346167325] [2019-10-14 23:44:06,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:44:06,822 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:06,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:44:06,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:06,844 INFO L87 Difference]: Start difference. First operand 310 states. Second operand 4 states. [2019-10-14 23:44:07,180 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-14 23:44:08,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:08,888 INFO L93 Difference]: Finished difference Result 605 states and 1058 transitions. [2019-10-14 23:44:08,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:08,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2019-10-14 23:44:08,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:08,917 INFO L225 Difference]: With dead ends: 605 [2019-10-14 23:44:08,918 INFO L226 Difference]: Without dead ends: 493 [2019-10-14 23:44:08,924 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:08,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2019-10-14 23:44:09,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 491. [2019-10-14 23:44:09,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2019-10-14 23:44:09,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 730 transitions. [2019-10-14 23:44:09,012 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 730 transitions. Word has length 148 [2019-10-14 23:44:09,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:09,013 INFO L462 AbstractCegarLoop]: Abstraction has 491 states and 730 transitions. [2019-10-14 23:44:09,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:44:09,014 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 730 transitions. [2019-10-14 23:44:09,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-14 23:44:09,019 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:09,019 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:09,019 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:09,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:09,020 INFO L82 PathProgramCache]: Analyzing trace with hash -835560269, now seen corresponding path program 1 times [2019-10-14 23:44:09,020 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:09,020 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845569380] [2019-10-14 23:44:09,021 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:09,021 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:09,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:09,697 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:44:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:09,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:09,747 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845569380] [2019-10-14 23:44:09,747 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:09,747 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:44:09,747 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291131378] [2019-10-14 23:44:09,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:44:09,750 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:09,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:44:09,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:09,751 INFO L87 Difference]: Start difference. First operand 491 states and 730 transitions. Second operand 5 states. [2019-10-14 23:44:12,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:12,018 INFO L93 Difference]: Finished difference Result 1423 states and 2113 transitions. [2019-10-14 23:44:12,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:12,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2019-10-14 23:44:12,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:12,026 INFO L225 Difference]: With dead ends: 1423 [2019-10-14 23:44:12,026 INFO L226 Difference]: Without dead ends: 945 [2019-10-14 23:44:12,030 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:44:12,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2019-10-14 23:44:12,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 943. [2019-10-14 23:44:12,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2019-10-14 23:44:12,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1389 transitions. [2019-10-14 23:44:12,095 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1389 transitions. Word has length 148 [2019-10-14 23:44:12,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:12,096 INFO L462 AbstractCegarLoop]: Abstraction has 943 states and 1389 transitions. [2019-10-14 23:44:12,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:44:12,096 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1389 transitions. [2019-10-14 23:44:12,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-14 23:44:12,100 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:12,101 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:12,101 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:12,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:12,102 INFO L82 PathProgramCache]: Analyzing trace with hash -312485947, now seen corresponding path program 1 times [2019-10-14 23:44:12,102 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:12,102 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085138804] [2019-10-14 23:44:12,102 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:12,102 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:12,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:12,447 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:44:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:12,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:12,500 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085138804] [2019-10-14 23:44:12,500 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:12,502 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:44:12,511 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723280048] [2019-10-14 23:44:12,513 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:44:12,514 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:12,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:44:12,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:12,516 INFO L87 Difference]: Start difference. First operand 943 states and 1389 transitions. Second operand 4 states. [2019-10-14 23:44:14,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:14,028 INFO L93 Difference]: Finished difference Result 2783 states and 4097 transitions. [2019-10-14 23:44:14,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:44:14,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-10-14 23:44:14,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:14,039 INFO L225 Difference]: With dead ends: 2783 [2019-10-14 23:44:14,040 INFO L226 Difference]: Without dead ends: 1872 [2019-10-14 23:44:14,043 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:14,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2019-10-14 23:44:14,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 945. [2019-10-14 23:44:14,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 945 states. [2019-10-14 23:44:14,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1391 transitions. [2019-10-14 23:44:14,109 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1391 transitions. Word has length 149 [2019-10-14 23:44:14,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:14,110 INFO L462 AbstractCegarLoop]: Abstraction has 945 states and 1391 transitions. [2019-10-14 23:44:14,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:44:14,110 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1391 transitions. [2019-10-14 23:44:14,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-14 23:44:14,114 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:14,114 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:14,115 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:14,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:14,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1358823732, now seen corresponding path program 1 times [2019-10-14 23:44:14,115 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:14,116 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416257718] [2019-10-14 23:44:14,116 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:14,116 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:14,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:14,526 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:44:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:14,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416257718] [2019-10-14 23:44:14,568 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:14,568 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:44:14,568 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617474878] [2019-10-14 23:44:14,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:44:14,569 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:14,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:44:14,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:14,570 INFO L87 Difference]: Start difference. First operand 945 states and 1391 transitions. Second operand 5 states. [2019-10-14 23:44:15,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:15,992 INFO L93 Difference]: Finished difference Result 1876 states and 2764 transitions. [2019-10-14 23:44:15,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:15,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2019-10-14 23:44:15,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:15,998 INFO L225 Difference]: With dead ends: 1876 [2019-10-14 23:44:15,999 INFO L226 Difference]: Without dead ends: 943 [2019-10-14 23:44:16,001 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:44:16,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2019-10-14 23:44:16,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 943. [2019-10-14 23:44:16,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2019-10-14 23:44:16,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1387 transitions. [2019-10-14 23:44:16,049 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1387 transitions. Word has length 150 [2019-10-14 23:44:16,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:16,050 INFO L462 AbstractCegarLoop]: Abstraction has 943 states and 1387 transitions. [2019-10-14 23:44:16,050 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:44:16,050 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1387 transitions. [2019-10-14 23:44:16,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-14 23:44:16,055 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:16,055 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:16,056 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:16,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:16,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1528940934, now seen corresponding path program 1 times [2019-10-14 23:44:16,057 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:16,057 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445078953] [2019-10-14 23:44:16,057 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:16,057 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:16,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:16,451 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:44:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:16,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:16,520 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445078953] [2019-10-14 23:44:16,520 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:16,521 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:44:16,521 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674121294] [2019-10-14 23:44:16,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:44:16,522 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:16,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:44:16,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:16,523 INFO L87 Difference]: Start difference. First operand 943 states and 1387 transitions. Second operand 4 states. [2019-10-14 23:44:18,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:18,620 INFO L93 Difference]: Finished difference Result 2159 states and 3193 transitions. [2019-10-14 23:44:18,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:44:18,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2019-10-14 23:44:18,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:18,630 INFO L225 Difference]: With dead ends: 2159 [2019-10-14 23:44:18,630 INFO L226 Difference]: Without dead ends: 1396 [2019-10-14 23:44:18,633 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:18,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2019-10-14 23:44:18,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 1394. [2019-10-14 23:44:18,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1394 states. [2019-10-14 23:44:18,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 2025 transitions. [2019-10-14 23:44:18,697 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 2025 transitions. Word has length 150 [2019-10-14 23:44:18,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:18,698 INFO L462 AbstractCegarLoop]: Abstraction has 1394 states and 2025 transitions. [2019-10-14 23:44:18,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:44:18,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 2025 transitions. [2019-10-14 23:44:18,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-14 23:44:18,702 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:18,703 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:18,703 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:18,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:18,704 INFO L82 PathProgramCache]: Analyzing trace with hash 2049235060, now seen corresponding path program 1 times [2019-10-14 23:44:18,704 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:18,704 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344702498] [2019-10-14 23:44:18,704 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:18,705 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:18,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:19,085 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:44:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:19,153 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344702498] [2019-10-14 23:44:19,154 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:19,154 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:44:19,155 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758957746] [2019-10-14 23:44:19,161 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:44:19,161 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:19,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:44:19,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:19,167 INFO L87 Difference]: Start difference. First operand 1394 states and 2025 transitions. Second operand 4 states. [2019-10-14 23:44:19,446 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2019-10-14 23:44:21,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:21,077 INFO L93 Difference]: Finished difference Result 3707 states and 5443 transitions. [2019-10-14 23:44:21,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:21,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2019-10-14 23:44:21,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:21,090 INFO L225 Difference]: With dead ends: 3707 [2019-10-14 23:44:21,091 INFO L226 Difference]: Without dead ends: 2595 [2019-10-14 23:44:21,094 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:21,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2019-10-14 23:44:21,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2593. [2019-10-14 23:44:21,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2593 states. [2019-10-14 23:44:21,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 3764 transitions. [2019-10-14 23:44:21,203 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 3764 transitions. Word has length 156 [2019-10-14 23:44:21,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:21,204 INFO L462 AbstractCegarLoop]: Abstraction has 2593 states and 3764 transitions. [2019-10-14 23:44:21,204 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:44:21,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 3764 transitions. [2019-10-14 23:44:21,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-14 23:44:21,210 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:21,210 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:21,210 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:21,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:21,211 INFO L82 PathProgramCache]: Analyzing trace with hash 327258095, now seen corresponding path program 1 times [2019-10-14 23:44:21,211 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:21,211 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122533082] [2019-10-14 23:44:21,211 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:21,212 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:21,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:21,583 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:44:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:21,644 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122533082] [2019-10-14 23:44:21,644 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:21,644 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:44:21,644 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993104751] [2019-10-14 23:44:21,645 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:44:21,645 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:21,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:44:21,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:44:21,646 INFO L87 Difference]: Start difference. First operand 2593 states and 3764 transitions. Second operand 7 states. [2019-10-14 23:44:21,913 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2019-10-14 23:44:24,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:24,352 INFO L93 Difference]: Finished difference Result 6395 states and 10006 transitions. [2019-10-14 23:44:24,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:44:24,353 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2019-10-14 23:44:24,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:24,379 INFO L225 Difference]: With dead ends: 6395 [2019-10-14 23:44:24,379 INFO L226 Difference]: Without dead ends: 5489 [2019-10-14 23:44:24,383 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:44:24,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5489 states. [2019-10-14 23:44:24,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5489 to 5453. [2019-10-14 23:44:24,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5453 states. [2019-10-14 23:44:24,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 8364 transitions. [2019-10-14 23:44:24,685 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 8364 transitions. Word has length 156 [2019-10-14 23:44:24,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:24,685 INFO L462 AbstractCegarLoop]: Abstraction has 5453 states and 8364 transitions. [2019-10-14 23:44:24,685 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:44:24,686 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 8364 transitions. [2019-10-14 23:44:24,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-14 23:44:24,692 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:24,692 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:24,692 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:24,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:24,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1936499521, now seen corresponding path program 1 times [2019-10-14 23:44:24,693 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:24,694 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177720248] [2019-10-14 23:44:24,694 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:24,694 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:24,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:25,186 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:44:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:25,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:25,237 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177720248] [2019-10-14 23:44:25,237 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:25,238 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:44:25,238 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654772070] [2019-10-14 23:44:25,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:44:25,239 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:25,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:44:25,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:44:25,239 INFO L87 Difference]: Start difference. First operand 5453 states and 8364 transitions. Second operand 9 states. [2019-10-14 23:44:25,454 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-14 23:44:27,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:27,128 INFO L93 Difference]: Finished difference Result 9061 states and 14264 transitions. [2019-10-14 23:44:27,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:44:27,128 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 156 [2019-10-14 23:44:27,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:27,155 INFO L225 Difference]: With dead ends: 9061 [2019-10-14 23:44:27,155 INFO L226 Difference]: Without dead ends: 5455 [2019-10-14 23:44:27,164 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:44:27,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5455 states. [2019-10-14 23:44:27,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5455 to 5453. [2019-10-14 23:44:27,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5453 states. [2019-10-14 23:44:27,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 8328 transitions. [2019-10-14 23:44:27,511 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 8328 transitions. Word has length 156 [2019-10-14 23:44:27,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:27,511 INFO L462 AbstractCegarLoop]: Abstraction has 5453 states and 8328 transitions. [2019-10-14 23:44:27,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:44:27,512 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 8328 transitions. [2019-10-14 23:44:27,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-14 23:44:27,521 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:27,521 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:27,521 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:27,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:27,522 INFO L82 PathProgramCache]: Analyzing trace with hash -681147618, now seen corresponding path program 1 times [2019-10-14 23:44:27,522 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:27,523 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454696042] [2019-10-14 23:44:27,523 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:27,523 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:27,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:27,997 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:44:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:28,076 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454696042] [2019-10-14 23:44:28,076 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:28,076 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:44:28,077 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291428421] [2019-10-14 23:44:28,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:44:28,083 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:28,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:44:28,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:28,084 INFO L87 Difference]: Start difference. First operand 5453 states and 8328 transitions. Second operand 5 states. [2019-10-14 23:44:30,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:30,370 INFO L93 Difference]: Finished difference Result 14216 states and 21721 transitions. [2019-10-14 23:44:30,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:30,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2019-10-14 23:44:30,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:30,408 INFO L225 Difference]: With dead ends: 14216 [2019-10-14 23:44:30,408 INFO L226 Difference]: Without dead ends: 8786 [2019-10-14 23:44:30,419 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:44:30,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8786 states. [2019-10-14 23:44:30,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8786 to 8784. [2019-10-14 23:44:30,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8784 states. [2019-10-14 23:44:30,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8784 states to 8784 states and 13279 transitions. [2019-10-14 23:44:30,823 INFO L78 Accepts]: Start accepts. Automaton has 8784 states and 13279 transitions. Word has length 156 [2019-10-14 23:44:30,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:30,823 INFO L462 AbstractCegarLoop]: Abstraction has 8784 states and 13279 transitions. [2019-10-14 23:44:30,823 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:44:30,823 INFO L276 IsEmpty]: Start isEmpty. Operand 8784 states and 13279 transitions. [2019-10-14 23:44:30,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-14 23:44:30,831 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:30,831 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:30,832 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:30,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:30,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1122789079, now seen corresponding path program 1 times [2019-10-14 23:44:30,832 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:30,833 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435751119] [2019-10-14 23:44:30,833 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:30,833 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:30,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:31,150 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:44:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:31,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:31,206 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435751119] [2019-10-14 23:44:31,209 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:31,209 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:44:31,209 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028622255] [2019-10-14 23:44:31,210 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:44:31,210 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:31,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:44:31,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:31,211 INFO L87 Difference]: Start difference. First operand 8784 states and 13279 transitions. Second operand 4 states. [2019-10-14 23:44:33,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:33,734 INFO L93 Difference]: Finished difference Result 25169 states and 38128 transitions. [2019-10-14 23:44:33,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:44:33,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2019-10-14 23:44:33,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:33,780 INFO L225 Difference]: With dead ends: 25169 [2019-10-14 23:44:33,780 INFO L226 Difference]: Without dead ends: 16843 [2019-10-14 23:44:33,803 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:33,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16843 states. [2019-10-14 23:44:34,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16843 to 16841. [2019-10-14 23:44:34,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16841 states. [2019-10-14 23:44:34,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16841 states to 16841 states and 25210 transitions. [2019-10-14 23:44:34,543 INFO L78 Accepts]: Start accepts. Automaton has 16841 states and 25210 transitions. Word has length 158 [2019-10-14 23:44:34,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:34,544 INFO L462 AbstractCegarLoop]: Abstraction has 16841 states and 25210 transitions. [2019-10-14 23:44:34,544 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:44:34,544 INFO L276 IsEmpty]: Start isEmpty. Operand 16841 states and 25210 transitions. [2019-10-14 23:44:34,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-14 23:44:34,558 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:34,558 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:34,558 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:34,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:34,559 INFO L82 PathProgramCache]: Analyzing trace with hash 725817844, now seen corresponding path program 1 times [2019-10-14 23:44:34,559 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:34,559 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801741469] [2019-10-14 23:44:34,559 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:34,560 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:34,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:34,940 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:44:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:34,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:34,997 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801741469] [2019-10-14 23:44:34,997 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:34,997 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:44:34,998 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491375761] [2019-10-14 23:44:34,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:44:34,999 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:34,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:44:34,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:34,999 INFO L87 Difference]: Start difference. First operand 16841 states and 25210 transitions. Second operand 5 states. [2019-10-14 23:44:36,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:36,663 INFO L93 Difference]: Finished difference Result 26903 states and 40236 transitions. [2019-10-14 23:44:36,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:36,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2019-10-14 23:44:36,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:36,694 INFO L225 Difference]: With dead ends: 26903 [2019-10-14 23:44:36,695 INFO L226 Difference]: Without dead ends: 13712 [2019-10-14 23:44:36,719 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:44:36,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13712 states. [2019-10-14 23:44:37,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13712 to 13712. [2019-10-14 23:44:37,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13712 states. [2019-10-14 23:44:37,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13712 states to 13712 states and 20437 transitions. [2019-10-14 23:44:37,398 INFO L78 Accepts]: Start accepts. Automaton has 13712 states and 20437 transitions. Word has length 158 [2019-10-14 23:44:37,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:37,399 INFO L462 AbstractCegarLoop]: Abstraction has 13712 states and 20437 transitions. [2019-10-14 23:44:37,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:44:37,399 INFO L276 IsEmpty]: Start isEmpty. Operand 13712 states and 20437 transitions. [2019-10-14 23:44:37,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-14 23:44:37,408 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:37,408 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:37,408 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:37,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:37,409 INFO L82 PathProgramCache]: Analyzing trace with hash 579616721, now seen corresponding path program 1 times [2019-10-14 23:44:37,409 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:37,409 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874892964] [2019-10-14 23:44:37,409 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:37,409 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:37,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat