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_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 11:19:23,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 11:19:23,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 11:19:23,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 11:19:23,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 11:19:23,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 11:19:23,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 11:19:23,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 11:19:23,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 11:19:23,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 11:19:23,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 11:19:23,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 11:19:23,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 11:19:23,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 11:19:23,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 11:19:23,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 11:19:23,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 11:19:23,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 11:19:23,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 11:19:23,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 11:19:23,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 11:19:23,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 11:19:23,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 11:19:23,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 11:19:23,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 11:19:23,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 11:19:23,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 11:19:23,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 11:19:23,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 11:19:23,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 11:19:23,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 11:19:23,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 11:19:23,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 11:19:23,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 11:19:23,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 11:19:23,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 11:19:23,114 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 11:19:23,137 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 11:19:23,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 11:19:23,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 11:19:23,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 11:19:23,141 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 11:19:23,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 11:19:23,141 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 11:19:23,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 11:19:23,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 11:19:23,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 11:19:23,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 11:19:23,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 11:19:23,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 11:19:23,143 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 11:19:23,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 11:19:23,143 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 11:19:23,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 11:19:23,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 11:19:23,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 11:19:23,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 11:19:23,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 11:19:23,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 11:19:23,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 11:19:23,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 11:19:23,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 11:19:23,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 11:19:23,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 11:19:23,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 11:19:23,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 11:19:23,195 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 11:19:23,210 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 11:19:23,215 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 11:19:23,216 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 11:19:23,217 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 11:19:23,218 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-08 11:19:23,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/710a61fce/1938bbc3293041d88bc735a3dc4be712/FLAG76c8dae08 [2019-09-08 11:19:23,838 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 11:19:23,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-08 11:19:23,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/710a61fce/1938bbc3293041d88bc735a3dc4be712/FLAG76c8dae08 [2019-09-08 11:19:24,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/710a61fce/1938bbc3293041d88bc735a3dc4be712 [2019-09-08 11:19:24,170 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 11:19:24,171 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 11:19:24,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 11:19:24,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 11:19:24,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 11:19:24,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 11:19:24" (1/1) ... [2019-09-08 11:19:24,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b46dfdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:19:24, skipping insertion in model container [2019-09-08 11:19:24,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 11:19:24" (1/1) ... [2019-09-08 11:19:24,188 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 11:19:24,246 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 11:19:24,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 11:19:24,639 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 11:19:24,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 11:19:24,785 INFO L192 MainTranslator]: Completed translation [2019-09-08 11:19:24,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:19:24 WrapperNode [2019-09-08 11:19:24,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 11:19:24,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 11:19:24,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 11:19:24,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 11:19:24,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:19:24" (1/1) ... [2019-09-08 11:19:24,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:19:24" (1/1) ... [2019-09-08 11:19:24,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:19:24" (1/1) ... [2019-09-08 11:19:24,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:19:24" (1/1) ... [2019-09-08 11:19:24,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:19:24" (1/1) ... [2019-09-08 11:19:24,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:19:24" (1/1) ... [2019-09-08 11:19:24,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:19:24" (1/1) ... [2019-09-08 11:19:24,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 11:19:24,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 11:19:24,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 11:19:24,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 11:19:24,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:19:24" (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 11:19:24,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 11:19:24,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 11:19:24,902 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 11:19:24,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 11:19:24,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 11:19:24,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 11:19:24,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-09-08 11:19:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 11:19:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 11:19:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 11:19:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 11:19:24,904 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 11:19:24,904 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 11:19:24,904 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 11:19:24,905 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2019-09-08 11:19:24,905 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2019-09-08 11:19:24,905 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2019-09-08 11:19:24,905 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 11:19:24,906 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 11:19:24,906 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 11:19:24,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 11:19:24,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 11:19:25,795 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 11:19:25,796 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 11:19:25,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 11:19:25 BoogieIcfgContainer [2019-09-08 11:19:25,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 11:19:25,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 11:19:25,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 11:19:25,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 11:19:25,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 11:19:24" (1/3) ... [2019-09-08 11:19:25,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b81f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 11:19:25, skipping insertion in model container [2019-09-08 11:19:25,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:19:24" (2/3) ... [2019-09-08 11:19:25,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b81f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 11:19:25, skipping insertion in model container [2019-09-08 11:19:25,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 11:19:25" (3/3) ... [2019-09-08 11:19:25,806 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-08 11:19:25,816 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 11:19:25,825 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 11:19:25,843 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 11:19:25,877 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 11:19:25,877 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 11:19:25,878 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 11:19:25,878 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 11:19:25,878 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 11:19:25,878 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 11:19:25,879 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 11:19:25,879 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 11:19:25,879 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 11:19:25,903 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2019-09-08 11:19:25,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-09-08 11:19:25,916 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:19:25,917 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 11:19:25,920 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:19:25,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:19:25,927 INFO L82 PathProgramCache]: Analyzing trace with hash -56104316, now seen corresponding path program 1 times [2019-09-08 11:19:25,929 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:19:25,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:19:25,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:19:25,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:19:25,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:19:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:19:26,418 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 11:19:26,421 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:19:26,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:19:26,429 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:19:26,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:19:26,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:19:26,447 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2019-09-08 11:19:26,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:19:26,597 INFO L93 Difference]: Finished difference Result 398 states and 640 transitions. [2019-09-08 11:19:26,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:19:26,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2019-09-08 11:19:26,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:19:26,633 INFO L225 Difference]: With dead ends: 398 [2019-09-08 11:19:26,633 INFO L226 Difference]: Without dead ends: 268 [2019-09-08 11:19:26,642 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:19:26,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2019-09-08 11:19:26,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 266. [2019-09-08 11:19:26,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2019-09-08 11:19:26,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 396 transitions. [2019-09-08 11:19:26,765 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 396 transitions. Word has length 78 [2019-09-08 11:19:26,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:19:26,766 INFO L475 AbstractCegarLoop]: Abstraction has 266 states and 396 transitions. [2019-09-08 11:19:26,766 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:19:26,766 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 396 transitions. [2019-09-08 11:19:26,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-09-08 11:19:26,774 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:19:26,775 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 11:19:26,776 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:19:26,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:19:26,776 INFO L82 PathProgramCache]: Analyzing trace with hash -30986540, now seen corresponding path program 1 times [2019-09-08 11:19:26,776 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:19:26,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:19:26,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:19:26,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:19:26,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:19:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:19:26,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:19:26,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:19:26,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:19:26,999 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:19:27,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:19:27,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:19:27,001 INFO L87 Difference]: Start difference. First operand 266 states and 396 transitions. Second operand 3 states. [2019-09-08 11:19:27,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:19:27,068 INFO L93 Difference]: Finished difference Result 670 states and 1040 transitions. [2019-09-08 11:19:27,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:19:27,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2019-09-08 11:19:27,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:19:27,077 INFO L225 Difference]: With dead ends: 670 [2019-09-08 11:19:27,077 INFO L226 Difference]: Without dead ends: 452 [2019-09-08 11:19:27,081 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:19:27,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2019-09-08 11:19:27,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 450. [2019-09-08 11:19:27,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2019-09-08 11:19:27,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 689 transitions. [2019-09-08 11:19:27,136 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 689 transitions. Word has length 79 [2019-09-08 11:19:27,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:19:27,137 INFO L475 AbstractCegarLoop]: Abstraction has 450 states and 689 transitions. [2019-09-08 11:19:27,137 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:19:27,137 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 689 transitions. [2019-09-08 11:19:27,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-08 11:19:27,140 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:19:27,140 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 11:19:27,141 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:19:27,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:19:27,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1869199441, now seen corresponding path program 1 times [2019-09-08 11:19:27,142 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:19:27,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:19:27,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:19:27,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:19:27,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:19:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:19:27,336 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 11:19:27,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:19:27,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:19:27,337 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:19:27,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:19:27,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:19:27,338 INFO L87 Difference]: Start difference. First operand 450 states and 689 transitions. Second operand 3 states. [2019-09-08 11:19:27,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:19:27,396 INFO L93 Difference]: Finished difference Result 1190 states and 1867 transitions. [2019-09-08 11:19:27,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:19:27,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2019-09-08 11:19:27,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:19:27,401 INFO L225 Difference]: With dead ends: 1190 [2019-09-08 11:19:27,402 INFO L226 Difference]: Without dead ends: 788 [2019-09-08 11:19:27,404 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:19:27,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2019-09-08 11:19:27,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 786. [2019-09-08 11:19:27,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 786 states. [2019-09-08 11:19:27,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1221 transitions. [2019-09-08 11:19:27,445 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1221 transitions. Word has length 80 [2019-09-08 11:19:27,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:19:27,445 INFO L475 AbstractCegarLoop]: Abstraction has 786 states and 1221 transitions. [2019-09-08 11:19:27,445 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:19:27,446 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1221 transitions. [2019-09-08 11:19:27,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-09-08 11:19:27,447 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:19:27,448 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:19:27,448 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:19:27,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:19:27,448 INFO L82 PathProgramCache]: Analyzing trace with hash -28449079, now seen corresponding path program 1 times [2019-09-08 11:19:27,449 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:19:27,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:19:27,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:19:27,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:19:27,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:19:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:19:27,562 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 11:19:27,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:19:27,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:19:27,563 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:19:27,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:19:27,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:19:27,564 INFO L87 Difference]: Start difference. First operand 786 states and 1221 transitions. Second operand 3 states. [2019-09-08 11:19:27,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:19:27,638 INFO L93 Difference]: Finished difference Result 2134 states and 3359 transitions. [2019-09-08 11:19:27,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:19:27,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-09-08 11:19:27,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:19:27,647 INFO L225 Difference]: With dead ends: 2134 [2019-09-08 11:19:27,647 INFO L226 Difference]: Without dead ends: 1396 [2019-09-08 11:19:27,650 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:19:27,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2019-09-08 11:19:27,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 1394. [2019-09-08 11:19:27,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1394 states. [2019-09-08 11:19:27,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 2177 transitions. [2019-09-08 11:19:27,705 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 2177 transitions. Word has length 81 [2019-09-08 11:19:27,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:19:27,706 INFO L475 AbstractCegarLoop]: Abstraction has 1394 states and 2177 transitions. [2019-09-08 11:19:27,706 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:19:27,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 2177 transitions. [2019-09-08 11:19:27,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-09-08 11:19:27,707 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:19:27,708 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:19:27,708 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:19:27,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:19:27,709 INFO L82 PathProgramCache]: Analyzing trace with hash 579558126, now seen corresponding path program 1 times [2019-09-08 11:19:27,709 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:19:27,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:19:27,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:19:27,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:19:27,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:19:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:19:27,802 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 11:19:27,802 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:19:27,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:19:27,803 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:19:27,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:19:27,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:19:27,805 INFO L87 Difference]: Start difference. First operand 1394 states and 2177 transitions. Second operand 3 states. [2019-09-08 11:19:27,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:19:27,919 INFO L93 Difference]: Finished difference Result 3830 states and 6019 transitions. [2019-09-08 11:19:27,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:19:27,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2019-09-08 11:19:27,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:19:27,934 INFO L225 Difference]: With dead ends: 3830 [2019-09-08 11:19:27,934 INFO L226 Difference]: Without dead ends: 2484 [2019-09-08 11:19:27,938 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:19:27,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2019-09-08 11:19:28,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2482. [2019-09-08 11:19:28,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2482 states. [2019-09-08 11:19:28,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3873 transitions. [2019-09-08 11:19:28,066 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3873 transitions. Word has length 82 [2019-09-08 11:19:28,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:19:28,067 INFO L475 AbstractCegarLoop]: Abstraction has 2482 states and 3873 transitions. [2019-09-08 11:19:28,068 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:19:28,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3873 transitions. [2019-09-08 11:19:28,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-09-08 11:19:28,069 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:19:28,069 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:19:28,069 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:19:28,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:19:28,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1438283986, now seen corresponding path program 1 times [2019-09-08 11:19:28,070 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:19:28,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:19:28,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:19:28,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:19:28,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:19:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:19:28,354 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 11:19:28,355 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:19:28,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-08 11:19:28,355 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 11:19:28,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 11:19:28,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-09-08 11:19:28,356 INFO L87 Difference]: Start difference. First operand 2482 states and 3873 transitions. Second operand 8 states. [2019-09-08 11:19:29,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:19:29,190 INFO L93 Difference]: Finished difference Result 15086 states and 23527 transitions. [2019-09-08 11:19:29,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-08 11:19:29,191 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2019-09-08 11:19:29,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:19:29,255 INFO L225 Difference]: With dead ends: 15086 [2019-09-08 11:19:29,255 INFO L226 Difference]: Without dead ends: 12652 [2019-09-08 11:19:29,265 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-09-08 11:19:29,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12652 states. [2019-09-08 11:19:29,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12652 to 12642. [2019-09-08 11:19:29,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12642 states. [2019-09-08 11:19:30,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12642 states to 12642 states and 19665 transitions. [2019-09-08 11:19:30,009 INFO L78 Accepts]: Start accepts. Automaton has 12642 states and 19665 transitions. Word has length 83 [2019-09-08 11:19:30,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:19:30,010 INFO L475 AbstractCegarLoop]: Abstraction has 12642 states and 19665 transitions. [2019-09-08 11:19:30,010 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 11:19:30,010 INFO L276 IsEmpty]: Start isEmpty. Operand 12642 states and 19665 transitions. [2019-09-08 11:19:30,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-08 11:19:30,012 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:19:30,012 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:19:30,012 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:19:30,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:19:30,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1909068852, now seen corresponding path program 1 times [2019-09-08 11:19:30,013 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:19:30,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:19:30,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:19:30,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:19:30,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:19:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:19:30,080 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 11:19:30,080 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:19:30,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:19:30,081 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:19:30,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:19:30,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:19:30,081 INFO L87 Difference]: Start difference. First operand 12642 states and 19665 transitions. Second operand 3 states. [2019-09-08 11:19:31,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:19:31,121 INFO L93 Difference]: Finished difference Result 34534 states and 53587 transitions. [2019-09-08 11:19:31,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:19:31,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2019-09-08 11:19:31,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:19:31,193 INFO L225 Difference]: With dead ends: 34534 [2019-09-08 11:19:31,193 INFO L226 Difference]: Without dead ends: 21940 [2019-09-08 11:19:31,218 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:19:31,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21940 states. [2019-09-08 11:19:32,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21940 to 21938. [2019-09-08 11:19:32,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21938 states. [2019-09-08 11:19:32,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21938 states to 21938 states and 33777 transitions. [2019-09-08 11:19:32,285 INFO L78 Accepts]: Start accepts. Automaton has 21938 states and 33777 transitions. Word has length 84 [2019-09-08 11:19:32,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:19:32,286 INFO L475 AbstractCegarLoop]: Abstraction has 21938 states and 33777 transitions. [2019-09-08 11:19:32,286 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:19:32,286 INFO L276 IsEmpty]: Start isEmpty. Operand 21938 states and 33777 transitions. [2019-09-08 11:19:32,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-09-08 11:19:32,288 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:19:32,288 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:19:32,288 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:19:32,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:19:32,289 INFO L82 PathProgramCache]: Analyzing trace with hash 2091636891, now seen corresponding path program 1 times [2019-09-08 11:19:32,289 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:19:32,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:19:32,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:19:32,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:19:32,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:19:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:19:32,374 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 11:19:32,375 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:19:32,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:19:32,375 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:19:32,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:19:32,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:19:32,376 INFO L87 Difference]: Start difference. First operand 21938 states and 33777 transitions. Second operand 5 states. [2019-09-08 11:19:34,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:19:34,462 INFO L93 Difference]: Finished difference Result 65718 states and 101235 transitions. [2019-09-08 11:19:34,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 11:19:34,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2019-09-08 11:19:34,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:19:34,610 INFO L225 Difference]: With dead ends: 65718 [2019-09-08 11:19:34,611 INFO L226 Difference]: Without dead ends: 43828 [2019-09-08 11:19:34,667 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-08 11:19:34,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43828 states. [2019-09-08 11:19:36,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43828 to 43826. [2019-09-08 11:19:36,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43826 states. [2019-09-08 11:19:36,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43826 states to 43826 states and 67153 transitions. [2019-09-08 11:19:36,654 INFO L78 Accepts]: Start accepts. Automaton has 43826 states and 67153 transitions. Word has length 85 [2019-09-08 11:19:36,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:19:36,655 INFO L475 AbstractCegarLoop]: Abstraction has 43826 states and 67153 transitions. [2019-09-08 11:19:36,655 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:19:36,655 INFO L276 IsEmpty]: Start isEmpty. Operand 43826 states and 67153 transitions. [2019-09-08 11:19:36,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-09-08 11:19:36,656 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:19:36,656 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:19:36,657 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:19:36,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:19:36,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1934689024, now seen corresponding path program 1 times [2019-09-08 11:19:36,657 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:19:36,657 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:19:36,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:19:36,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:19:36,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:19:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:19:36,858 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 11:19:36,858 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:19:36,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-08 11:19:36,859 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 11:19:36,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 11:19:36,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-09-08 11:19:36,860 INFO L87 Difference]: Start difference. First operand 43826 states and 67153 transitions. Second operand 8 states. [2019-09-08 11:19:45,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:19:45,601 INFO L93 Difference]: Finished difference Result 247552 states and 379928 transitions. [2019-09-08 11:19:45,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-08 11:19:45,602 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2019-09-08 11:19:45,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:19:46,181 INFO L225 Difference]: With dead ends: 247552 [2019-09-08 11:19:46,181 INFO L226 Difference]: Without dead ends: 203774 [2019-09-08 11:19:46,297 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-09-08 11:19:46,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203774 states. [2019-09-08 11:19:51,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203774 to 87602. [2019-09-08 11:19:51,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87602 states. [2019-09-08 11:19:51,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87602 states to 87602 states and 132721 transitions. [2019-09-08 11:19:51,243 INFO L78 Accepts]: Start accepts. Automaton has 87602 states and 132721 transitions. Word has length 85 [2019-09-08 11:19:51,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:19:51,243 INFO L475 AbstractCegarLoop]: Abstraction has 87602 states and 132721 transitions. [2019-09-08 11:19:51,243 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 11:19:51,244 INFO L276 IsEmpty]: Start isEmpty. Operand 87602 states and 132721 transitions. [2019-09-08 11:19:51,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-09-08 11:19:51,245 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:19:51,245 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:19:51,246 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:19:51,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:19:51,246 INFO L82 PathProgramCache]: Analyzing trace with hash -172715075, now seen corresponding path program 1 times [2019-09-08 11:19:51,246 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:19:51,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:19:51,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:19:51,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:19:51,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:19:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:19:52,732 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 11:19:52,732 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:19:52,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:19:52,733 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:19:52,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:19:52,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:19:52,734 INFO L87 Difference]: Start difference. First operand 87602 states and 132721 transitions. Second operand 5 states. [2019-09-08 11:19:59,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:19:59,972 INFO L93 Difference]: Finished difference Result 178228 states and 268466 transitions. [2019-09-08 11:19:59,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 11:19:59,972 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2019-09-08 11:19:59,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:20:00,338 INFO L225 Difference]: With dead ends: 178228 [2019-09-08 11:20:00,338 INFO L226 Difference]: Without dead ends: 178226 [2019-09-08 11:20:00,389 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 11:20:00,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178226 states. [2019-09-08 11:20:07,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178226 to 90674. [2019-09-08 11:20:07,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90674 states. [2019-09-08 11:20:07,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90674 states to 90674 states and 135793 transitions. [2019-09-08 11:20:07,549 INFO L78 Accepts]: Start accepts. Automaton has 90674 states and 135793 transitions. Word has length 86 [2019-09-08 11:20:07,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:20:07,549 INFO L475 AbstractCegarLoop]: Abstraction has 90674 states and 135793 transitions. [2019-09-08 11:20:07,549 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:20:07,549 INFO L276 IsEmpty]: Start isEmpty. Operand 90674 states and 135793 transitions. [2019-09-08 11:20:07,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-09-08 11:20:07,550 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:20:07,551 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:20:07,551 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:20:07,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:20:07,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1049580209, now seen corresponding path program 1 times [2019-09-08 11:20:07,552 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:20:07,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:20:07,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:20:07,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:20:07,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:20:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:20:07,646 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 11:20:07,646 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:20:07,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:20:07,647 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:20:07,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:20:07,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:20:07,648 INFO L87 Difference]: Start difference. First operand 90674 states and 135793 transitions. Second operand 3 states. [2019-09-08 11:20:13,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:20:13,562 INFO L93 Difference]: Finished difference Result 202904 states and 303397 transitions. [2019-09-08 11:20:13,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:20:13,567 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2019-09-08 11:20:13,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:20:13,786 INFO L225 Difference]: With dead ends: 202904 [2019-09-08 11:20:13,787 INFO L226 Difference]: Without dead ends: 112278 [2019-09-08 11:20:13,905 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:20:14,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112278 states. [2019-09-08 11:20:22,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112278 to 111924. [2019-09-08 11:20:22,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111924 states. [2019-09-08 11:20:22,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111924 states to 111924 states and 166595 transitions. [2019-09-08 11:20:22,425 INFO L78 Accepts]: Start accepts. Automaton has 111924 states and 166595 transitions. Word has length 87 [2019-09-08 11:20:22,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:20:22,425 INFO L475 AbstractCegarLoop]: Abstraction has 111924 states and 166595 transitions. [2019-09-08 11:20:22,426 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:20:22,426 INFO L276 IsEmpty]: Start isEmpty. Operand 111924 states and 166595 transitions. [2019-09-08 11:20:22,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-08 11:20:22,471 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:20:22,471 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:20:22,472 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:20:22,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:20:22,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1906818762, now seen corresponding path program 1 times [2019-09-08 11:20:22,472 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:20:22,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:20:22,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:20:22,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:20:22,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:20:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:20:22,725 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:20:22,726 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:20:22,726 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 11:20:22,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:20:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:20:22,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-08 11:20:22,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:20:23,140 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 11:20:23,146 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:20:23,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4] total 12 [2019-09-08 11:20:23,154 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 11:20:23,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 11:20:23,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-09-08 11:20:23,155 INFO L87 Difference]: Start difference. First operand 111924 states and 166595 transitions. Second operand 12 states. [2019-09-08 11:22:14,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:22:14,937 INFO L93 Difference]: Finished difference Result 1469320 states and 2166133 transitions. [2019-09-08 11:22:14,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2019-09-08 11:22:14,938 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 118 [2019-09-08 11:22:14,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:22:17,413 INFO L225 Difference]: With dead ends: 1469320 [2019-09-08 11:22:17,413 INFO L226 Difference]: Without dead ends: 1357446 [2019-09-08 11:22:17,741 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3782 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1653, Invalid=7853, Unknown=0, NotChecked=0, Total=9506 [2019-09-08 11:22:18,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357446 states. [2019-09-08 11:23:02,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357446 to 327268. [2019-09-08 11:23:02,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327268 states. [2019-09-08 11:23:03,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327268 states to 327268 states and 479827 transitions. [2019-09-08 11:23:03,041 INFO L78 Accepts]: Start accepts. Automaton has 327268 states and 479827 transitions. Word has length 118 [2019-09-08 11:23:03,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:23:03,041 INFO L475 AbstractCegarLoop]: Abstraction has 327268 states and 479827 transitions. [2019-09-08 11:23:03,041 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 11:23:03,042 INFO L276 IsEmpty]: Start isEmpty. Operand 327268 states and 479827 transitions. [2019-09-08 11:23:03,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-08 11:23:03,120 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:23:03,120 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:23:03,121 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:23:03,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:23:03,121 INFO L82 PathProgramCache]: Analyzing trace with hash -482119262, now seen corresponding path program 1 times [2019-09-08 11:23:03,121 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:23:03,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:23:03,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:23:03,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:23:03,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:23:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:23:03,211 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:23:03,212 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:23:03,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:23:03,212 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:23:03,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:23:03,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:23:03,214 INFO L87 Difference]: Start difference. First operand 327268 states and 479827 transitions. Second operand 3 states. [2019-09-08 11:23:56,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:23:56,464 INFO L93 Difference]: Finished difference Result 818633 states and 1204471 transitions. [2019-09-08 11:23:56,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:23:56,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-09-08 11:23:56,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:23:58,197 INFO L225 Difference]: With dead ends: 818633 [2019-09-08 11:23:58,198 INFO L226 Difference]: Without dead ends: 530951 [2019-09-08 11:23:58,415 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:23:58,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530951 states. [2019-09-08 11:24:56,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530951 to 530949. [2019-09-08 11:24:56,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530949 states. [2019-09-08 11:24:57,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530949 states to 530949 states and 776917 transitions. [2019-09-08 11:24:57,970 INFO L78 Accepts]: Start accepts. Automaton has 530949 states and 776917 transitions. Word has length 118 [2019-09-08 11:24:57,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:24:57,970 INFO L475 AbstractCegarLoop]: Abstraction has 530949 states and 776917 transitions. [2019-09-08 11:24:57,970 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:24:57,971 INFO L276 IsEmpty]: Start isEmpty. Operand 530949 states and 776917 transitions. [2019-09-08 11:24:58,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-08 11:24:58,048 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:24:58,048 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:24:58,048 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:24:58,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:24:58,048 INFO L82 PathProgramCache]: Analyzing trace with hash -739654471, now seen corresponding path program 1 times [2019-09-08 11:24:58,049 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:24:58,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:24:58,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:24:58,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:24:58,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:24:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:24:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-08 11:24:58,144 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:24:58,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 11:24:58,145 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 11:24:58,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 11:24:58,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-08 11:24:58,146 INFO L87 Difference]: Start difference. First operand 530949 states and 776917 transitions. Second operand 6 states. [2019-09-08 11:27:32,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:27:32,241 INFO L93 Difference]: Finished difference Result 2056219 states and 3001528 transitions. [2019-09-08 11:27:32,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 11:27:32,242 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2019-09-08 11:27:32,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:27:35,309 INFO L225 Difference]: With dead ends: 2056219 [2019-09-08 11:27:35,309 INFO L226 Difference]: Without dead ends: 1525321 [2019-09-08 11:27:35,914 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-09-08 11:27:38,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525321 states.