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.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:43:34,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:43:34,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:43:34,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:43:34,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:43:34,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:43:34,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:43:34,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:43:34,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:43:34,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:43:34,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:43:34,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:43:34,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:43:34,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:43:34,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:43:34,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:43:34,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:43:34,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:43:34,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:43:34,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:43:34,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:43:34,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:43:34,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:43:34,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:43:34,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:43:34,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:43:34,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:43:34,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:43:34,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:43:34,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:43:34,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:43:34,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:43:34,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:43:34,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:43:34,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:43:34,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:43:34,170 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 23:43:34,197 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:43:34,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:43:34,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:43:34,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:43:34,200 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:43:34,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:43:34,200 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:43:34,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:43:34,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:43:34,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:43:34,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:43:34,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:43:34,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:43:34,203 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:43:34,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:43:34,203 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:43:34,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:43:34,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:43:34,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:43:34,204 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:43:34,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:43:34,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:43:34,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:43:34,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:43:34,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:43:34,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:43:34,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:43:34,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:43:34,206 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:43:34,495 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:43:34,509 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:43:34,513 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:43:34,515 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:43:34,515 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:43:34,516 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-10-14 23:43:34,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76e75b83c/21e42d8510e44bd5ad69666013269985/FLAG5203d1701 [2019-10-14 23:43:35,183 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:43:35,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-10-14 23:43:35,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76e75b83c/21e42d8510e44bd5ad69666013269985/FLAG5203d1701 [2019-10-14 23:43:35,448 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76e75b83c/21e42d8510e44bd5ad69666013269985 [2019-10-14 23:43:35,460 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:43:35,464 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:43:35,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:43:35,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:43:35,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:43:35,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:43:35" (1/1) ... [2019-10-14 23:43:35,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ffb8e88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:35, skipping insertion in model container [2019-10-14 23:43:35,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:43:35" (1/1) ... [2019-10-14 23:43:35,477 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:43:35,542 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:43:36,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:43:36,085 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:43:36,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:43:36,264 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:43:36,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:36 WrapperNode [2019-10-14 23:43:36,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:43:36,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:43:36,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:43:36,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:43:36,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:36" (1/1) ... [2019-10-14 23:43:36,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:36" (1/1) ... [2019-10-14 23:43:36,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:36" (1/1) ... [2019-10-14 23:43:36,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:36" (1/1) ... [2019-10-14 23:43:36,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:36" (1/1) ... [2019-10-14 23:43:36,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:36" (1/1) ... [2019-10-14 23:43:36,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:36" (1/1) ... [2019-10-14 23:43:36,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:43:36,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:43:36,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:43:36,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:43:36,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:43:36,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:43:36,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:43:36,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:43:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:43:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-14 23:43:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-14 23:43:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-14 23:43:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:43:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-14 23:43:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-14 23:43:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-14 23:43:36,459 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-14 23:43:36,459 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-14 23:43:36,459 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-14 23:43:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-14 23:43:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:43:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:43:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:43:37,897 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:43:37,897 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:43:37,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:43:37 BoogieIcfgContainer [2019-10-14 23:43:37,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:43:37,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:43:37,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:43:37,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:43:37,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:43:35" (1/3) ... [2019-10-14 23:43:37,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12de3df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:43:37, skipping insertion in model container [2019-10-14 23:43:37,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:36" (2/3) ... [2019-10-14 23:43:37,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12de3df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:43:37, skipping insertion in model container [2019-10-14 23:43:37,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:43:37" (3/3) ... [2019-10-14 23:43:37,907 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-10-14 23:43:37,917 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:43:37,926 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:43:37,937 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:43:37,966 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:43:37,967 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:43:37,967 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:43:37,967 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:43:37,967 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:43:37,967 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:43:37,968 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:43:37,968 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:43:37,994 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2019-10-14 23:43:38,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-14 23:43:38,009 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:43:38,010 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] [2019-10-14 23:43:38,012 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:43:38,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:43:38,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1527007645, now seen corresponding path program 1 times [2019-10-14 23:43:38,028 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:43:38,028 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200996645] [2019-10-14 23:43:38,028 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:38,029 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:38,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:43:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:39,063 WARN L191 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:43:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:39,141 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 23:43:39,142 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200996645] [2019-10-14 23:43:39,143 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:43:39,143 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:43:39,144 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167821442] [2019-10-14 23:43:39,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:43:39,150 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:43:39,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:43:39,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:43:39,168 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 4 states. [2019-10-14 23:43:39,505 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-14 23:43:41,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:43:41,156 INFO L93 Difference]: Finished difference Result 613 states and 1073 transitions. [2019-10-14 23:43:41,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:43:41,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2019-10-14 23:43:41,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:43:41,178 INFO L225 Difference]: With dead ends: 613 [2019-10-14 23:43:41,178 INFO L226 Difference]: Without dead ends: 493 [2019-10-14 23:43:41,183 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:43:41,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2019-10-14 23:43:41,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 491. [2019-10-14 23:43:41,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2019-10-14 23:43:41,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 734 transitions. [2019-10-14 23:43:41,281 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 734 transitions. Word has length 142 [2019-10-14 23:43:41,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:43:41,282 INFO L462 AbstractCegarLoop]: Abstraction has 491 states and 734 transitions. [2019-10-14 23:43:41,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:43:41,282 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 734 transitions. [2019-10-14 23:43:41,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-14 23:43:41,287 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:43:41,287 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] [2019-10-14 23:43:41,288 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:43:41,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:43:41,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1999332176, now seen corresponding path program 1 times [2019-10-14 23:43:41,288 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:43:41,289 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849354938] [2019-10-14 23:43:41,289 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:41,289 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:41,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:43:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:41,785 WARN L191 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:43:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:41,852 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 23:43:41,854 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849354938] [2019-10-14 23:43:41,854 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:43:41,855 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:43:41,855 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034140305] [2019-10-14 23:43:41,858 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:43:41,859 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:43:41,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:43:41,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:43:41,860 INFO L87 Difference]: Start difference. First operand 491 states and 734 transitions. Second operand 4 states. [2019-10-14 23:43:42,128 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-14 23:43:43,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:43:43,377 INFO L93 Difference]: Finished difference Result 1061 states and 1631 transitions. [2019-10-14 23:43:43,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:43:43,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2019-10-14 23:43:43,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:43:43,385 INFO L225 Difference]: With dead ends: 1061 [2019-10-14 23:43:43,385 INFO L226 Difference]: Without dead ends: 863 [2019-10-14 23:43:43,388 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 23:43:43,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2019-10-14 23:43:43,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 861. [2019-10-14 23:43:43,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2019-10-14 23:43:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1298 transitions. [2019-10-14 23:43:43,479 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1298 transitions. Word has length 142 [2019-10-14 23:43:43,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:43:43,480 INFO L462 AbstractCegarLoop]: Abstraction has 861 states and 1298 transitions. [2019-10-14 23:43:43,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:43:43,480 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1298 transitions. [2019-10-14 23:43:43,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-14 23:43:43,484 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:43:43,485 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] [2019-10-14 23:43:43,485 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:43:43,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:43:43,485 INFO L82 PathProgramCache]: Analyzing trace with hash -686393694, now seen corresponding path program 1 times [2019-10-14 23:43:43,486 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:43:43,486 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869056634] [2019-10-14 23:43:43,486 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:43,486 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:43,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:43:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:44,140 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:43:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:44,187 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 23:43:44,188 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869056634] [2019-10-14 23:43:44,189 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:43:44,197 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:43:44,199 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160116118] [2019-10-14 23:43:44,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:43:44,200 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:43:44,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:43:44,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:43:44,200 INFO L87 Difference]: Start difference. First operand 861 states and 1298 transitions. Second operand 5 states. [2019-10-14 23:43:46,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:43:46,589 INFO L93 Difference]: Finished difference Result 2510 states and 3779 transitions. [2019-10-14 23:43:46,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:43:46,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2019-10-14 23:43:46,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:43:46,600 INFO L225 Difference]: With dead ends: 2510 [2019-10-14 23:43:46,600 INFO L226 Difference]: Without dead ends: 1662 [2019-10-14 23:43:46,604 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:43:46,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2019-10-14 23:43:46,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1660. [2019-10-14 23:43:46,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1660 states. [2019-10-14 23:43:46,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2478 transitions. [2019-10-14 23:43:46,680 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2478 transitions. Word has length 142 [2019-10-14 23:43:46,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:43:46,681 INFO L462 AbstractCegarLoop]: Abstraction has 1660 states and 2478 transitions. [2019-10-14 23:43:46,681 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:43:46,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2478 transitions. [2019-10-14 23:43:46,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-14 23:43:46,685 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:43:46,686 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] [2019-10-14 23:43:46,686 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:43:46,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:43:46,687 INFO L82 PathProgramCache]: Analyzing trace with hash -755552508, now seen corresponding path program 1 times [2019-10-14 23:43:46,687 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:43:46,687 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350210085] [2019-10-14 23:43:46,687 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:46,688 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:46,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:43:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:46,992 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:43:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:47,025 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 23:43:47,025 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350210085] [2019-10-14 23:43:47,026 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:43:47,026 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:43:47,026 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427464685] [2019-10-14 23:43:47,027 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:43:47,027 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:43:47,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:43:47,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:43:47,028 INFO L87 Difference]: Start difference. First operand 1660 states and 2478 transitions. Second operand 4 states. [2019-10-14 23:43:49,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:43:49,255 INFO L93 Difference]: Finished difference Result 4934 states and 7364 transitions. [2019-10-14 23:43:49,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:43:49,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2019-10-14 23:43:49,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:43:49,273 INFO L225 Difference]: With dead ends: 4934 [2019-10-14 23:43:49,273 INFO L226 Difference]: Without dead ends: 3306 [2019-10-14 23:43:49,277 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 23:43:49,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3306 states. [2019-10-14 23:43:49,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3306 to 1662. [2019-10-14 23:43:49,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1662 states. [2019-10-14 23:43:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2480 transitions. [2019-10-14 23:43:49,371 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2480 transitions. Word has length 143 [2019-10-14 23:43:49,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:43:49,371 INFO L462 AbstractCegarLoop]: Abstraction has 1662 states and 2480 transitions. [2019-10-14 23:43:49,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:43:49,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2480 transitions. [2019-10-14 23:43:49,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-14 23:43:49,375 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:43:49,375 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] [2019-10-14 23:43:49,376 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:43:49,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:43:49,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1401891903, now seen corresponding path program 1 times [2019-10-14 23:43:49,376 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:43:49,377 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130486219] [2019-10-14 23:43:49,377 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:49,377 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:49,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:43:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:49,672 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:43:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:49,710 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 23:43:49,710 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130486219] [2019-10-14 23:43:49,711 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:43:49,711 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:43:49,711 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861619206] [2019-10-14 23:43:49,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:43:49,712 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:43:49,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:43:49,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:43:49,713 INFO L87 Difference]: Start difference. First operand 1662 states and 2480 transitions. Second operand 4 states. [2019-10-14 23:43:52,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:43:52,071 INFO L93 Difference]: Finished difference Result 4382 states and 6541 transitions. [2019-10-14 23:43:52,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:43:52,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2019-10-14 23:43:52,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:43:52,088 INFO L225 Difference]: With dead ends: 4382 [2019-10-14 23:43:52,088 INFO L226 Difference]: Without dead ends: 2890 [2019-10-14 23:43:52,092 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 23:43:52,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2019-10-14 23:43:52,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 2888. [2019-10-14 23:43:52,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2888 states. [2019-10-14 23:43:52,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 4253 transitions. [2019-10-14 23:43:52,264 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 4253 transitions. Word has length 144 [2019-10-14 23:43:52,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:43:52,265 INFO L462 AbstractCegarLoop]: Abstraction has 2888 states and 4253 transitions. [2019-10-14 23:43:52,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:43:52,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 4253 transitions. [2019-10-14 23:43:52,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-14 23:43:52,270 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:43:52,272 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] [2019-10-14 23:43:52,272 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:43:52,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:43:52,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1372424798, now seen corresponding path program 1 times [2019-10-14 23:43:52,273 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:43:52,273 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185178809] [2019-10-14 23:43:52,273 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:52,273 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:52,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:43:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:52,645 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:43:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:52,677 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 23:43:52,677 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185178809] [2019-10-14 23:43:52,678 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:43:52,678 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:43:52,678 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284835142] [2019-10-14 23:43:52,679 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:43:52,679 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:43:52,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:43:52,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:43:52,680 INFO L87 Difference]: Start difference. First operand 2888 states and 4253 transitions. Second operand 5 states. [2019-10-14 23:43:54,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:43:54,173 INFO L93 Difference]: Finished difference Result 5958 states and 8716 transitions. [2019-10-14 23:43:54,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:43:54,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2019-10-14 23:43:54,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:43:54,187 INFO L225 Difference]: With dead ends: 5958 [2019-10-14 23:43:54,188 INFO L226 Difference]: Without dead ends: 3026 [2019-10-14 23:43:54,193 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:43:54,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2019-10-14 23:43:54,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 3024. [2019-10-14 23:43:54,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3024 states. [2019-10-14 23:43:54,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3024 states to 3024 states and 4395 transitions. [2019-10-14 23:43:54,326 INFO L78 Accepts]: Start accepts. Automaton has 3024 states and 4395 transitions. Word has length 144 [2019-10-14 23:43:54,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:43:54,326 INFO L462 AbstractCegarLoop]: Abstraction has 3024 states and 4395 transitions. [2019-10-14 23:43:54,326 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:43:54,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3024 states and 4395 transitions. [2019-10-14 23:43:54,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-14 23:43:54,333 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:43:54,333 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] [2019-10-14 23:43:54,334 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:43:54,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:43:54,334 INFO L82 PathProgramCache]: Analyzing trace with hash 2066844131, now seen corresponding path program 1 times [2019-10-14 23:43:54,334 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:43:54,335 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376943846] [2019-10-14 23:43:54,335 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:54,335 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:54,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:43:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:54,682 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:43:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:54,720 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 23:43:54,721 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376943846] [2019-10-14 23:43:54,721 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:43:54,721 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:43:54,722 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190829510] [2019-10-14 23:43:54,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:43:54,722 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:43:54,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:43:54,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:43:54,723 INFO L87 Difference]: Start difference. First operand 3024 states and 4395 transitions. Second operand 5 states. [2019-10-14 23:43:56,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:43:56,874 INFO L93 Difference]: Finished difference Result 8770 states and 12691 transitions. [2019-10-14 23:43:56,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:43:56,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2019-10-14 23:43:56,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:43:56,897 INFO L225 Difference]: With dead ends: 8770 [2019-10-14 23:43:56,897 INFO L226 Difference]: Without dead ends: 5818 [2019-10-14 23:43:56,904 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 23:43:56,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5818 states. [2019-10-14 23:43:57,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5818 to 5816. [2019-10-14 23:43:57,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5816 states. [2019-10-14 23:43:57,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5816 states to 5816 states and 8339 transitions. [2019-10-14 23:43:57,138 INFO L78 Accepts]: Start accepts. Automaton has 5816 states and 8339 transitions. Word has length 144 [2019-10-14 23:43:57,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:43:57,139 INFO L462 AbstractCegarLoop]: Abstraction has 5816 states and 8339 transitions. [2019-10-14 23:43:57,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:43:57,139 INFO L276 IsEmpty]: Start isEmpty. Operand 5816 states and 8339 transitions. [2019-10-14 23:43:57,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-14 23:43:57,147 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:43:57,148 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] [2019-10-14 23:43:57,148 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:43:57,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:43:57,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1792011813, now seen corresponding path program 1 times [2019-10-14 23:43:57,149 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:43:57,149 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784763545] [2019-10-14 23:43:57,149 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:57,149 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:57,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:43:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:57,463 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:43:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:57,493 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 23:43:57,494 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784763545] [2019-10-14 23:43:57,494 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:43:57,494 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:43:57,495 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545302280] [2019-10-14 23:43:57,496 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:43:57,496 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:43:57,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:43:57,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:43:57,498 INFO L87 Difference]: Start difference. First operand 5816 states and 8339 transitions. Second operand 4 states. [2019-10-14 23:43:58,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:43:58,999 INFO L93 Difference]: Finished difference Result 17254 states and 24713 transitions. [2019-10-14 23:43:58,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:43:59,000 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2019-10-14 23:43:59,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:43:59,045 INFO L225 Difference]: With dead ends: 17254 [2019-10-14 23:43:59,046 INFO L226 Difference]: Without dead ends: 11554 [2019-10-14 23:43:59,060 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 23:43:59,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11554 states. [2019-10-14 23:43:59,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11554 to 5828. [2019-10-14 23:43:59,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5828 states. [2019-10-14 23:43:59,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5828 states to 5828 states and 8351 transitions. [2019-10-14 23:43:59,399 INFO L78 Accepts]: Start accepts. Automaton has 5828 states and 8351 transitions. Word has length 145 [2019-10-14 23:43:59,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:43:59,400 INFO L462 AbstractCegarLoop]: Abstraction has 5828 states and 8351 transitions. [2019-10-14 23:43:59,400 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:43:59,400 INFO L276 IsEmpty]: Start isEmpty. Operand 5828 states and 8351 transitions. [2019-10-14 23:43:59,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-14 23:43:59,408 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:43:59,409 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] [2019-10-14 23:43:59,409 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:43:59,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:43:59,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1919082916, now seen corresponding path program 1 times [2019-10-14 23:43:59,410 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:43:59,410 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149205152] [2019-10-14 23:43:59,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:59,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:59,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:43:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:59,784 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:43:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:59,822 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 23:43:59,823 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149205152] [2019-10-14 23:43:59,823 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:43:59,823 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:43:59,823 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522926708] [2019-10-14 23:43:59,824 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:43:59,824 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:43:59,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:43:59,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:43:59,825 INFO L87 Difference]: Start difference. First operand 5828 states and 8351 transitions. Second operand 5 states. [2019-10-14 23:44:01,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:01,919 INFO L93 Difference]: Finished difference Result 15812 states and 22544 transitions. [2019-10-14 23:44:01,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:01,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2019-10-14 23:44:01,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:01,949 INFO L225 Difference]: With dead ends: 15812 [2019-10-14 23:44:01,950 INFO L226 Difference]: Without dead ends: 10110 [2019-10-14 23:44:01,962 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 23:44:01,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10110 states. [2019-10-14 23:44:02,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10110 to 10108. [2019-10-14 23:44:02,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10108 states. [2019-10-14 23:44:02,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10108 states to 10108 states and 14232 transitions. [2019-10-14 23:44:02,463 INFO L78 Accepts]: Start accepts. Automaton has 10108 states and 14232 transitions. Word has length 146 [2019-10-14 23:44:02,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:02,464 INFO L462 AbstractCegarLoop]: Abstraction has 10108 states and 14232 transitions. [2019-10-14 23:44:02,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:44:02,464 INFO L276 IsEmpty]: Start isEmpty. Operand 10108 states and 14232 transitions. [2019-10-14 23:44:02,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-14 23:44:02,476 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:02,476 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 23:44:02,476 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:02,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:02,477 INFO L82 PathProgramCache]: Analyzing trace with hash -754251552, now seen corresponding path program 1 times [2019-10-14 23:44:02,477 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:02,477 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224846439] [2019-10-14 23:44:02,477 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:02,477 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:02,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:02,871 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:44:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:02,932 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 23:44:02,933 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224846439] [2019-10-14 23:44:02,933 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:02,934 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:44:02,934 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9469854] [2019-10-14 23:44:02,934 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:44:02,935 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:02,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:44:02,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:02,935 INFO L87 Difference]: Start difference. First operand 10108 states and 14232 transitions. Second operand 5 states. [2019-10-14 23:44:05,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:05,489 INFO L93 Difference]: Finished difference Result 28566 states and 40288 transitions. [2019-10-14 23:44:05,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:05,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2019-10-14 23:44:05,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:05,520 INFO L225 Difference]: With dead ends: 28566 [2019-10-14 23:44:05,520 INFO L226 Difference]: Without dead ends: 18774 [2019-10-14 23:44:05,539 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:44:05,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18774 states. [2019-10-14 23:44:06,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18774 to 18772. [2019-10-14 23:44:06,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18772 states. [2019-10-14 23:44:06,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18772 states to 18772 states and 26177 transitions. [2019-10-14 23:44:06,352 INFO L78 Accepts]: Start accepts. Automaton has 18772 states and 26177 transitions. Word has length 148 [2019-10-14 23:44:06,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:06,352 INFO L462 AbstractCegarLoop]: Abstraction has 18772 states and 26177 transitions. [2019-10-14 23:44:06,352 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:44:06,352 INFO L276 IsEmpty]: Start isEmpty. Operand 18772 states and 26177 transitions. [2019-10-14 23:44:06,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-14 23:44:06,369 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:06,369 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 23:44:06,370 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:06,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:06,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1799575128, now seen corresponding path program 1 times [2019-10-14 23:44:06,370 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:06,371 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432462980] [2019-10-14 23:44:06,371 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:06,371 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:06,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:06,699 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-10-14 23:44:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:06,739 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 23:44:06,739 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432462980] [2019-10-14 23:44:06,739 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:06,739 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:44:06,740 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485019194] [2019-10-14 23:44:06,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:44:06,740 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:06,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:44:06,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:06,741 INFO L87 Difference]: Start difference. First operand 18772 states and 26177 transitions. Second operand 5 states. [2019-10-14 23:44:09,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:09,500 INFO L93 Difference]: Finished difference Result 26493 states and 36852 transitions. [2019-10-14 23:44:09,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:09,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2019-10-14 23:44:09,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:09,530 INFO L225 Difference]: With dead ends: 26493 [2019-10-14 23:44:09,530 INFO L226 Difference]: Without dead ends: 18774 [2019-10-14 23:44:09,549 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 23:44:09,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18774 states.