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_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:45:51,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:45:51,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:45:51,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:45:51,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:45:51,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:45:51,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:45:51,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:45:51,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:45:51,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:45:51,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:45:51,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:45:51,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:45:51,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:45:51,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:45:51,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:45:51,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:45:51,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:45:51,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:45:51,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:45:51,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:45:51,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:45:51,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:45:51,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:45:51,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:45:51,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:45:51,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:45:51,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:45:51,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:45:51,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:45:51,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:45:51,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:45:51,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:45:51,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:45:51,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:45:51,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:45:51,440 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 [2019-10-13 19:45:51,453 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:45:51,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:45:51,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:45:51,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:45:51,455 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:45:51,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:45:51,456 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:45:51,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:45:51,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:45:51,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:45:51,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:45:51,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:45:51,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:45:51,457 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:45:51,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:45:51,458 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:45:51,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:45:51,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:45:51,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:45:51,458 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:45:51,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:45:51,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:45:51,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:45:51,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:45:51,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:45:51,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:45:51,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:45:51,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:45:51,460 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:45:51,786 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:45:51,802 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:45:51,807 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:45:51,809 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:45:51,809 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:45:51,810 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-13 19:45:51,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9183e65ab/1f733645d1b145e582b4a476f623f128/FLAG12f00f32d [2019-10-13 19:45:52,476 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:45:52,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-13 19:45:52,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9183e65ab/1f733645d1b145e582b4a476f623f128/FLAG12f00f32d [2019-10-13 19:45:52,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9183e65ab/1f733645d1b145e582b4a476f623f128 [2019-10-13 19:45:52,747 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:45:52,748 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:45:52,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:52,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:45:52,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:45:52,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:52" (1/1) ... [2019-10-13 19:45:52,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@247f10a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:52, skipping insertion in model container [2019-10-13 19:45:52,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:52" (1/1) ... [2019-10-13 19:45:52,766 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:45:52,858 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:45:53,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:53,601 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:45:54,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:54,061 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:45:54,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:54 WrapperNode [2019-10-13 19:45:54,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:54,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:45:54,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:45:54,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:45:54,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:54" (1/1) ... [2019-10-13 19:45:54,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:54" (1/1) ... [2019-10-13 19:45:54,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:54" (1/1) ... [2019-10-13 19:45:54,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:54" (1/1) ... [2019-10-13 19:45:54,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:54" (1/1) ... [2019-10-13 19:45:54,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:54" (1/1) ... [2019-10-13 19:45:54,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:54" (1/1) ... [2019-10-13 19:45:54,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:45:54,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:45:54,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:45:54,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:45:54,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:54" (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 [2019-10-13 19:45:54,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:45:54,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:45:54,286 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:45:54,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:45:54,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:45:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-13 19:45:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-13 19:45:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-13 19:45:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:45:54,289 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-13 19:45:54,289 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-13 19:45:54,289 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-13 19:45:54,290 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-13 19:45:54,290 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-13 19:45:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-13 19:45:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-13 19:45:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:45:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:45:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:45:56,069 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:45:56,070 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:45:56,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:56 BoogieIcfgContainer [2019-10-13 19:45:56,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:45:56,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:45:56,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:45:56,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:45:56,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:45:52" (1/3) ... [2019-10-13 19:45:56,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7828a76b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:56, skipping insertion in model container [2019-10-13 19:45:56,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:54" (2/3) ... [2019-10-13 19:45:56,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7828a76b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:56, skipping insertion in model container [2019-10-13 19:45:56,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:56" (3/3) ... [2019-10-13 19:45:56,081 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-13 19:45:56,092 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:45:56,101 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-10-13 19:45:56,113 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-10-13 19:45:56,154 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:45:56,155 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:45:56,155 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:45:56,155 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:45:56,155 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:45:56,155 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:45:56,155 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:45:56,155 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:45:56,184 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states. [2019-10-13 19:45:56,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 19:45:56,203 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:56,204 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] [2019-10-13 19:45:56,207 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:56,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:56,214 INFO L82 PathProgramCache]: Analyzing trace with hash 431419903, now seen corresponding path program 1 times [2019-10-13 19:45:56,223 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:56,223 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775155777] [2019-10-13 19:45:56,224 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:56,224 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:56,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:57,307 WARN L191 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:45:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:57,363 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775155777] [2019-10-13 19:45:57,364 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:57,364 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:57,365 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397754014] [2019-10-13 19:45:57,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:57,370 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:57,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:57,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:57,388 INFO L87 Difference]: Start difference. First operand 423 states. Second operand 4 states. [2019-10-13 19:45:57,813 WARN L191 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-10-13 19:46:00,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:00,486 INFO L93 Difference]: Finished difference Result 780 states and 1363 transitions. [2019-10-13 19:46:00,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:46:00,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2019-10-13 19:46:00,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:00,511 INFO L225 Difference]: With dead ends: 780 [2019-10-13 19:46:00,512 INFO L226 Difference]: Without dead ends: 620 [2019-10-13 19:46:00,516 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:46:00,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-13 19:46:00,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 618. [2019-10-13 19:46:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2019-10-13 19:46:00,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 908 transitions. [2019-10-13 19:46:00,609 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 908 transitions. Word has length 148 [2019-10-13 19:46:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:00,610 INFO L462 AbstractCegarLoop]: Abstraction has 618 states and 908 transitions. [2019-10-13 19:46:00,611 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:00,611 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 908 transitions. [2019-10-13 19:46:00,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 19:46:00,616 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:00,617 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] [2019-10-13 19:46:00,617 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:00,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:00,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1285034941, now seen corresponding path program 1 times [2019-10-13 19:46:00,618 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:00,618 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986660137] [2019-10-13 19:46:00,618 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:00,619 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:00,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:01,149 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:01,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:01,202 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986660137] [2019-10-13 19:46:01,203 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:01,203 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:01,203 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394025305] [2019-10-13 19:46:01,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:01,206 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:01,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:01,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:01,207 INFO L87 Difference]: Start difference. First operand 618 states and 908 transitions. Second operand 4 states. [2019-10-13 19:46:01,499 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-10-13 19:46:03,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:03,693 INFO L93 Difference]: Finished difference Result 1261 states and 1910 transitions. [2019-10-13 19:46:03,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:46:03,694 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2019-10-13 19:46:03,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:03,706 INFO L225 Difference]: With dead ends: 1261 [2019-10-13 19:46:03,706 INFO L226 Difference]: Without dead ends: 1038 [2019-10-13 19:46:03,714 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 [2019-10-13 19:46:03,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2019-10-13 19:46:03,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1036. [2019-10-13 19:46:03,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2019-10-13 19:46:03,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1547 transitions. [2019-10-13 19:46:03,792 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1547 transitions. Word has length 148 [2019-10-13 19:46:03,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:03,793 INFO L462 AbstractCegarLoop]: Abstraction has 1036 states and 1547 transitions. [2019-10-13 19:46:03,793 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:03,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1547 transitions. [2019-10-13 19:46:03,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 19:46:03,797 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:03,798 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] [2019-10-13 19:46:03,798 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:03,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:03,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1285373565, now seen corresponding path program 1 times [2019-10-13 19:46:03,799 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:03,799 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987770633] [2019-10-13 19:46:03,799 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:03,800 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:03,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:04,408 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:04,453 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987770633] [2019-10-13 19:46:04,453 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:04,453 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:46:04,453 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570510439] [2019-10-13 19:46:04,454 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:46:04,455 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:04,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:46:04,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:46:04,455 INFO L87 Difference]: Start difference. First operand 1036 states and 1547 transitions. Second operand 5 states. [2019-10-13 19:46:07,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:07,789 INFO L93 Difference]: Finished difference Result 3025 states and 4506 transitions. [2019-10-13 19:46:07,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:46:07,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2019-10-13 19:46:07,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:07,808 INFO L225 Difference]: With dead ends: 3025 [2019-10-13 19:46:07,809 INFO L226 Difference]: Without dead ends: 2002 [2019-10-13 19:46:07,813 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 [2019-10-13 19:46:07,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2019-10-13 19:46:07,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1954. [2019-10-13 19:46:07,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1954 states. [2019-10-13 19:46:07,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2902 transitions. [2019-10-13 19:46:07,934 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2902 transitions. Word has length 148 [2019-10-13 19:46:07,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:07,935 INFO L462 AbstractCegarLoop]: Abstraction has 1954 states and 2902 transitions. [2019-10-13 19:46:07,935 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:46:07,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2902 transitions. [2019-10-13 19:46:07,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 19:46:07,944 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:07,944 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:46:07,945 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:07,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:07,946 INFO L82 PathProgramCache]: Analyzing trace with hash 2096736245, now seen corresponding path program 1 times [2019-10-13 19:46:07,946 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:07,946 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49850801] [2019-10-13 19:46:07,947 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:07,947 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:07,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:08,415 WARN L191 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:08,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:08,470 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49850801] [2019-10-13 19:46:08,471 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:08,471 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:08,472 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319428435] [2019-10-13 19:46:08,473 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:08,473 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:08,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:08,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:08,474 INFO L87 Difference]: Start difference. First operand 1954 states and 2902 transitions. Second operand 4 states. [2019-10-13 19:46:10,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:10,890 INFO L93 Difference]: Finished difference Result 5816 states and 8636 transitions. [2019-10-13 19:46:10,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:46:10,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-10-13 19:46:10,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:10,911 INFO L225 Difference]: With dead ends: 5816 [2019-10-13 19:46:10,911 INFO L226 Difference]: Without dead ends: 3894 [2019-10-13 19:46:10,917 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:10,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3894 states. [2019-10-13 19:46:11,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3894 to 1956. [2019-10-13 19:46:11,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1956 states. [2019-10-13 19:46:11,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 2904 transitions. [2019-10-13 19:46:11,025 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 2904 transitions. Word has length 149 [2019-10-13 19:46:11,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:11,025 INFO L462 AbstractCegarLoop]: Abstraction has 1956 states and 2904 transitions. [2019-10-13 19:46:11,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:11,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 2904 transitions. [2019-10-13 19:46:11,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-13 19:46:11,030 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:11,030 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:46:11,030 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:11,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:11,031 INFO L82 PathProgramCache]: Analyzing trace with hash 196497924, now seen corresponding path program 1 times [2019-10-13 19:46:11,031 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:11,032 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38404472] [2019-10-13 19:46:11,032 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:11,032 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:11,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:11,487 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:11,564 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38404472] [2019-10-13 19:46:11,564 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:11,565 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:46:11,565 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817724125] [2019-10-13 19:46:11,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:46:11,566 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:11,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:46:11,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:46:11,566 INFO L87 Difference]: Start difference. First operand 1956 states and 2904 transitions. Second operand 5 states. [2019-10-13 19:46:14,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:14,539 INFO L93 Difference]: Finished difference Result 5698 states and 8436 transitions. [2019-10-13 19:46:14,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:46:14,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2019-10-13 19:46:14,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:14,560 INFO L225 Difference]: With dead ends: 5698 [2019-10-13 19:46:14,560 INFO L226 Difference]: Without dead ends: 3776 [2019-10-13 19:46:14,565 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 [2019-10-13 19:46:14,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2019-10-13 19:46:14,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3728. [2019-10-13 19:46:14,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3728 states. [2019-10-13 19:46:14,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3728 states to 3728 states and 5493 transitions. [2019-10-13 19:46:14,724 INFO L78 Accepts]: Start accepts. Automaton has 3728 states and 5493 transitions. Word has length 150 [2019-10-13 19:46:14,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:14,725 INFO L462 AbstractCegarLoop]: Abstraction has 3728 states and 5493 transitions. [2019-10-13 19:46:14,725 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:46:14,726 INFO L276 IsEmpty]: Start isEmpty. Operand 3728 states and 5493 transitions. [2019-10-13 19:46:14,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-13 19:46:14,733 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:14,733 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:46:14,734 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:14,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:14,734 INFO L82 PathProgramCache]: Analyzing trace with hash 790157398, now seen corresponding path program 1 times [2019-10-13 19:46:14,735 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:14,735 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685460807] [2019-10-13 19:46:14,735 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:14,735 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:14,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:15,089 WARN L191 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:15,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:15,124 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685460807] [2019-10-13 19:46:15,126 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:15,130 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:15,130 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565453322] [2019-10-13 19:46:15,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:15,131 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:15,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:15,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:15,141 INFO L87 Difference]: Start difference. First operand 3728 states and 5493 transitions. Second operand 4 states. [2019-10-13 19:46:18,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:18,351 INFO L93 Difference]: Finished difference Result 11100 states and 16351 transitions. [2019-10-13 19:46:18,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:46:18,352 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2019-10-13 19:46:18,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:18,385 INFO L225 Difference]: With dead ends: 11100 [2019-10-13 19:46:18,385 INFO L226 Difference]: Without dead ends: 7420 [2019-10-13 19:46:18,392 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:18,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7420 states. [2019-10-13 19:46:18,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7420 to 3732. [2019-10-13 19:46:18,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3732 states. [2019-10-13 19:46:18,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3732 states to 3732 states and 5497 transitions. [2019-10-13 19:46:18,586 INFO L78 Accepts]: Start accepts. Automaton has 3732 states and 5497 transitions. Word has length 151 [2019-10-13 19:46:18,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:18,586 INFO L462 AbstractCegarLoop]: Abstraction has 3732 states and 5497 transitions. [2019-10-13 19:46:18,586 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:18,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3732 states and 5497 transitions. [2019-10-13 19:46:18,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-13 19:46:18,595 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:18,596 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:46:18,596 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:18,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:18,597 INFO L82 PathProgramCache]: Analyzing trace with hash -126702401, now seen corresponding path program 1 times [2019-10-13 19:46:18,598 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:18,598 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028964010] [2019-10-13 19:46:18,599 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:18,599 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:18,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:18,957 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:19,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:19,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028964010] [2019-10-13 19:46:19,014 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:19,015 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:46:19,015 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998160751] [2019-10-13 19:46:19,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:46:19,016 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:19,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:46:19,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:46:19,016 INFO L87 Difference]: Start difference. First operand 3732 states and 5497 transitions. Second operand 4 states. [2019-10-13 19:46:22,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:22,212 INFO L93 Difference]: Finished difference Result 10632 states and 15663 transitions. [2019-10-13 19:46:22,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:46:22,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2019-10-13 19:46:22,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:22,244 INFO L225 Difference]: With dead ends: 10632 [2019-10-13 19:46:22,244 INFO L226 Difference]: Without dead ends: 7212 [2019-10-13 19:46:22,253 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 [2019-10-13 19:46:22,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7212 states. [2019-10-13 19:46:22,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7212 to 7164. [2019-10-13 19:46:22,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7164 states. [2019-10-13 19:46:22,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7164 states to 7164 states and 10459 transitions. [2019-10-13 19:46:22,618 INFO L78 Accepts]: Start accepts. Automaton has 7164 states and 10459 transitions. Word has length 152 [2019-10-13 19:46:22,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:22,619 INFO L462 AbstractCegarLoop]: Abstraction has 7164 states and 10459 transitions. [2019-10-13 19:46:22,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:46:22,619 INFO L276 IsEmpty]: Start isEmpty. Operand 7164 states and 10459 transitions. [2019-10-13 19:46:22,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-13 19:46:22,630 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:22,630 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:46:22,630 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:22,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:22,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1183043556, now seen corresponding path program 1 times [2019-10-13 19:46:22,631 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:22,631 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460058684] [2019-10-13 19:46:22,631 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:22,631 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:22,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:23,046 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:23,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:23,079 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460058684] [2019-10-13 19:46:23,079 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:23,079 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:46:23,079 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854967470] [2019-10-13 19:46:23,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:46:23,080 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:23,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:46:23,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:46:23,081 INFO L87 Difference]: Start difference. First operand 7164 states and 10459 transitions. Second operand 5 states. [2019-10-13 19:46:25,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:25,152 INFO L93 Difference]: Finished difference Result 14748 states and 21411 transitions. [2019-10-13 19:46:25,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:46:25,152 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2019-10-13 19:46:25,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:25,167 INFO L225 Difference]: With dead ends: 14748 [2019-10-13 19:46:25,167 INFO L226 Difference]: Without dead ends: 7444 [2019-10-13 19:46:25,180 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 [2019-10-13 19:46:25,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7444 states. [2019-10-13 19:46:25,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7444 to 7396. [2019-10-13 19:46:25,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7396 states. [2019-10-13 19:46:25,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7396 states to 7396 states and 10665 transitions. [2019-10-13 19:46:25,451 INFO L78 Accepts]: Start accepts. Automaton has 7396 states and 10665 transitions. Word has length 152 [2019-10-13 19:46:25,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:25,451 INFO L462 AbstractCegarLoop]: Abstraction has 7396 states and 10665 transitions. [2019-10-13 19:46:25,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:46:25,451 INFO L276 IsEmpty]: Start isEmpty. Operand 7396 states and 10665 transitions. [2019-10-13 19:46:25,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-13 19:46:25,462 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:25,462 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:46:25,462 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:25,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:25,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1596344069, now seen corresponding path program 1 times [2019-10-13 19:46:25,463 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:25,463 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279600431] [2019-10-13 19:46:25,464 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:25,464 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:25,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:25,837 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:46:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:25,878 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279600431] [2019-10-13 19:46:25,878 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:25,878 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:46:25,878 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889531270] [2019-10-13 19:46:25,879 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:46:25,880 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:25,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:46:25,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:46:25,883 INFO L87 Difference]: Start difference. First operand 7396 states and 10665 transitions. Second operand 5 states.