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.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:45:11,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:45:11,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:45:11,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:45:11,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:45:11,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:45:11,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:45:11,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:45:11,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:45:11,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:45:11,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:45:11,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:45:11,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:45:11,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:45:11,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:45:11,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:45:11,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:45:11,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:45:11,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:45:11,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:45:11,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:45:11,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:45:11,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:45:11,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:45:11,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:45:11,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:45:11,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:45:11,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:45:11,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:45:11,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:45:11,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:45:11,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:45:11,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:45:11,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:45:11,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:45:11,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:45:11,392 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 19:45:11,412 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:45:11,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:45:11,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:45:11,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:45:11,414 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:45:11,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:45:11,414 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:45:11,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:45:11,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:45:11,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:45:11,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:45:11,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:45:11,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:45:11,415 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:45:11,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:45:11,416 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:45:11,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:45:11,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:45:11,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:45:11,417 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:45:11,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:45:11,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:45:11,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:45:11,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:45:11,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:45:11,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:45:11,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:45:11,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:45:11,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:45:11,703 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:45:11,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:45:11,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:45:11,729 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:45:11,729 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:45:11,730 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-13 19:45:11,809 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd7b91508/7500df987f514f88b88f8321704d9be2/FLAG49fe0058d [2019-10-13 19:45:12,437 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:45:12,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-13 19:45:12,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd7b91508/7500df987f514f88b88f8321704d9be2/FLAG49fe0058d [2019-10-13 19:45:12,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd7b91508/7500df987f514f88b88f8321704d9be2 [2019-10-13 19:45:12,745 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:45:12,747 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:45:12,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:12,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:45:12,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:45:12,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:12" (1/1) ... [2019-10-13 19:45:12,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6491a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:12, skipping insertion in model container [2019-10-13 19:45:12,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:12" (1/1) ... [2019-10-13 19:45:12,764 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:45:12,845 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:45:13,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:13,477 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:45:13,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:13,931 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:45:13,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13 WrapperNode [2019-10-13 19:45:13,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:13,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:45:13,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:45:13,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:45:13,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2019-10-13 19:45:13,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2019-10-13 19:45:13,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2019-10-13 19:45:13,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2019-10-13 19:45:14,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2019-10-13 19:45:14,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2019-10-13 19:45:14,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2019-10-13 19:45:14,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:45:14,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:45:14,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:45:14,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:45:14,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (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 19:45:14,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:45:14,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:45:14,174 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:45:14,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:45:14,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:45:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-13 19:45:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-13 19:45:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-13 19:45:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:45:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-13 19:45:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-13 19:45:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-13 19:45:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-13 19:45:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-13 19:45:14,181 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-13 19:45:14,181 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-13 19:45:14,184 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:45:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:45:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:45:16,163 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:45:16,164 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:45:16,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:16 BoogieIcfgContainer [2019-10-13 19:45:16,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:45:16,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:45:16,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:45:16,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:45:16,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:45:12" (1/3) ... [2019-10-13 19:45:16,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360c72f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:16, skipping insertion in model container [2019-10-13 19:45:16,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (2/3) ... [2019-10-13 19:45:16,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360c72f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:16, skipping insertion in model container [2019-10-13 19:45:16,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:16" (3/3) ... [2019-10-13 19:45:16,186 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-13 19:45:16,199 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:45:16,222 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-10-13 19:45:16,237 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-10-13 19:45:16,285 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:45:16,285 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:45:16,286 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:45:16,286 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:45:16,286 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:45:16,286 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:45:16,286 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:45:16,287 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:45:16,340 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states. [2019-10-13 19:45:16,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-13 19:45:16,376 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:16,377 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] [2019-10-13 19:45:16,379 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:16,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:16,387 INFO L82 PathProgramCache]: Analyzing trace with hash -242885028, now seen corresponding path program 1 times [2019-10-13 19:45:16,397 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:16,398 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367395088] [2019-10-13 19:45:16,399 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:16,399 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:16,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:17,449 WARN L191 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:45:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:17,509 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 19:45:17,510 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367395088] [2019-10-13 19:45:17,510 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:17,511 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:17,511 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576248975] [2019-10-13 19:45:17,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:17,517 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:17,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:17,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:17,535 INFO L87 Difference]: Start difference. First operand 382 states. Second operand 4 states. [2019-10-13 19:45:17,937 WARN L191 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:45:20,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:20,555 INFO L93 Difference]: Finished difference Result 692 states and 1229 transitions. [2019-10-13 19:45:20,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:20,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2019-10-13 19:45:20,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:20,589 INFO L225 Difference]: With dead ends: 692 [2019-10-13 19:45:20,589 INFO L226 Difference]: Without dead ends: 537 [2019-10-13 19:45:20,597 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 [2019-10-13 19:45:20,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2019-10-13 19:45:20,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 535. [2019-10-13 19:45:20,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2019-10-13 19:45:20,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 778 transitions. [2019-10-13 19:45:20,746 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 778 transitions. Word has length 142 [2019-10-13 19:45:20,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:20,747 INFO L462 AbstractCegarLoop]: Abstraction has 535 states and 778 transitions. [2019-10-13 19:45:20,747 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:20,747 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 778 transitions. [2019-10-13 19:45:20,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-13 19:45:20,750 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:20,750 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] [2019-10-13 19:45:20,751 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:20,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:20,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1296834716, now seen corresponding path program 1 times [2019-10-13 19:45:20,751 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:20,752 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548317943] [2019-10-13 19:45:20,752 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:20,752 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:20,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:21,248 WARN L191 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:45:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:21,292 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 19:45:21,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548317943] [2019-10-13 19:45:21,293 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:21,293 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:21,293 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800809219] [2019-10-13 19:45:21,296 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:21,296 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:21,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:21,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:21,297 INFO L87 Difference]: Start difference. First operand 535 states and 778 transitions. Second operand 4 states. [2019-10-13 19:45:21,643 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:45:23,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:23,701 INFO L93 Difference]: Finished difference Result 1070 states and 1613 transitions. [2019-10-13 19:45:23,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:23,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2019-10-13 19:45:23,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:23,708 INFO L225 Difference]: With dead ends: 1070 [2019-10-13 19:45:23,709 INFO L226 Difference]: Without dead ends: 853 [2019-10-13 19:45:23,712 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 [2019-10-13 19:45:23,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2019-10-13 19:45:23,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 851. [2019-10-13 19:45:23,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 851 states. [2019-10-13 19:45:23,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1260 transitions. [2019-10-13 19:45:23,750 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1260 transitions. Word has length 142 [2019-10-13 19:45:23,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:23,751 INFO L462 AbstractCegarLoop]: Abstraction has 851 states and 1260 transitions. [2019-10-13 19:45:23,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:23,751 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1260 transitions. [2019-10-13 19:45:23,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-13 19:45:23,754 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:23,755 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] [2019-10-13 19:45:23,755 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:23,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:23,756 INFO L82 PathProgramCache]: Analyzing trace with hash 156483868, now seen corresponding path program 1 times [2019-10-13 19:45:23,756 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:23,756 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35781953] [2019-10-13 19:45:23,756 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:23,757 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:23,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:24,425 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:45:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:24,500 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 19:45:24,501 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35781953] [2019-10-13 19:45:24,501 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:24,501 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:45:24,501 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116590069] [2019-10-13 19:45:24,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:45:24,502 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:24,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:45:24,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:24,503 INFO L87 Difference]: Start difference. First operand 851 states and 1260 transitions. Second operand 5 states. [2019-10-13 19:45:27,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:27,804 INFO L93 Difference]: Finished difference Result 2496 states and 3689 transitions. [2019-10-13 19:45:27,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:27,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2019-10-13 19:45:27,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:27,814 INFO L225 Difference]: With dead ends: 2496 [2019-10-13 19:45:27,815 INFO L226 Difference]: Without dead ends: 1658 [2019-10-13 19:45:27,821 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:45:27,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2019-10-13 19:45:27,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1630. [2019-10-13 19:45:27,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1630 states. [2019-10-13 19:45:27,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2403 transitions. [2019-10-13 19:45:27,892 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2403 transitions. Word has length 142 [2019-10-13 19:45:27,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:27,893 INFO L462 AbstractCegarLoop]: Abstraction has 1630 states and 2403 transitions. [2019-10-13 19:45:27,893 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:45:27,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2403 transitions. [2019-10-13 19:45:27,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 19:45:27,897 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:27,898 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] [2019-10-13 19:45:27,898 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:27,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:27,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1506911746, now seen corresponding path program 1 times [2019-10-13 19:45:27,899 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:27,899 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217177906] [2019-10-13 19:45:27,899 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:27,900 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:27,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:28,379 WARN L191 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:45:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:28,464 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 19:45:28,465 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217177906] [2019-10-13 19:45:28,465 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:28,466 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:28,467 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081517200] [2019-10-13 19:45:28,467 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:28,468 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:28,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:28,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:28,468 INFO L87 Difference]: Start difference. First operand 1630 states and 2403 transitions. Second operand 4 states. [2019-10-13 19:45:31,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:31,633 INFO L93 Difference]: Finished difference Result 4844 states and 7139 transitions. [2019-10-13 19:45:31,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:45:31,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2019-10-13 19:45:31,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:31,650 INFO L225 Difference]: With dead ends: 4844 [2019-10-13 19:45:31,651 INFO L226 Difference]: Without dead ends: 3246 [2019-10-13 19:45:31,655 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:31,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2019-10-13 19:45:31,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 1632. [2019-10-13 19:45:31,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1632 states. [2019-10-13 19:45:31,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2405 transitions. [2019-10-13 19:45:31,747 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2405 transitions. Word has length 143 [2019-10-13 19:45:31,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:31,748 INFO L462 AbstractCegarLoop]: Abstraction has 1632 states and 2405 transitions. [2019-10-13 19:45:31,748 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:31,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2405 transitions. [2019-10-13 19:45:31,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-13 19:45:31,751 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:31,752 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] [2019-10-13 19:45:31,752 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:31,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:31,753 INFO L82 PathProgramCache]: Analyzing trace with hash -705286279, now seen corresponding path program 1 times [2019-10-13 19:45:31,753 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:31,753 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266512656] [2019-10-13 19:45:31,753 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:31,753 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:31,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:32,110 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:45:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:32,150 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 19:45:32,150 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266512656] [2019-10-13 19:45:32,151 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:32,151 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:32,151 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608114680] [2019-10-13 19:45:32,152 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:32,152 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:32,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:32,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:32,152 INFO L87 Difference]: Start difference. First operand 1632 states and 2405 transitions. Second operand 4 states. [2019-10-13 19:45:34,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:34,670 INFO L93 Difference]: Finished difference Result 4281 states and 6311 transitions. [2019-10-13 19:45:34,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:45:34,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2019-10-13 19:45:34,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:34,686 INFO L225 Difference]: With dead ends: 4281 [2019-10-13 19:45:34,687 INFO L226 Difference]: Without dead ends: 2829 [2019-10-13 19:45:34,692 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 19:45:34,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2019-10-13 19:45:34,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 2801. [2019-10-13 19:45:34,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2801 states. [2019-10-13 19:45:34,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 4081 transitions. [2019-10-13 19:45:34,850 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 4081 transitions. Word has length 144 [2019-10-13 19:45:34,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:34,851 INFO L462 AbstractCegarLoop]: Abstraction has 2801 states and 4081 transitions. [2019-10-13 19:45:34,851 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:34,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 4081 transitions. [2019-10-13 19:45:34,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-13 19:45:34,856 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:34,856 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] [2019-10-13 19:45:34,857 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:34,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:34,857 INFO L82 PathProgramCache]: Analyzing trace with hash 2069030422, now seen corresponding path program 1 times [2019-10-13 19:45:34,858 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:34,858 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842869231] [2019-10-13 19:45:34,858 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:34,858 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:34,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:35,365 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:45:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:35,405 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 19:45:35,406 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842869231] [2019-10-13 19:45:35,407 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:35,411 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:45:35,412 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271221664] [2019-10-13 19:45:35,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:45:35,413 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:35,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:45:35,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:35,421 INFO L87 Difference]: Start difference. First operand 2801 states and 4081 transitions. Second operand 5 states. [2019-10-13 19:45:37,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:37,082 INFO L93 Difference]: Finished difference Result 5024 states and 7338 transitions. [2019-10-13 19:45:37,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:37,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2019-10-13 19:45:37,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:37,093 INFO L225 Difference]: With dead ends: 5024 [2019-10-13 19:45:37,093 INFO L226 Difference]: Without dead ends: 2393 [2019-10-13 19:45:37,098 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:45:37,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2019-10-13 19:45:37,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 2393. [2019-10-13 19:45:37,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2393 states. [2019-10-13 19:45:37,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2393 states to 2393 states and 3482 transitions. [2019-10-13 19:45:37,196 INFO L78 Accepts]: Start accepts. Automaton has 2393 states and 3482 transitions. Word has length 144 [2019-10-13 19:45:37,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:37,196 INFO L462 AbstractCegarLoop]: Abstraction has 2393 states and 3482 transitions. [2019-10-13 19:45:37,197 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:45:37,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2393 states and 3482 transitions. [2019-10-13 19:45:37,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-13 19:45:37,204 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:37,204 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] [2019-10-13 19:45:37,204 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:37,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:37,205 INFO L82 PathProgramCache]: Analyzing trace with hash -839538967, now seen corresponding path program 1 times [2019-10-13 19:45:37,206 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:37,206 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546744115] [2019-10-13 19:45:37,207 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:37,207 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:37,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:37,854 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:45:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:37,931 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 19:45:37,932 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546744115] [2019-10-13 19:45:37,932 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:37,932 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 19:45:37,933 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696272731] [2019-10-13 19:45:37,934 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 19:45:37,934 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:37,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 19:45:37,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:45:37,935 INFO L87 Difference]: Start difference. First operand 2393 states and 3482 transitions. Second operand 14 states. [2019-10-13 19:45:38,340 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2019-10-13 19:45:45,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:45,199 INFO L93 Difference]: Finished difference Result 10628 states and 16267 transitions. [2019-10-13 19:45:45,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-10-13 19:45:45,200 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 147 [2019-10-13 19:45:45,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:45,235 INFO L225 Difference]: With dead ends: 10628 [2019-10-13 19:45:45,235 INFO L226 Difference]: Without dead ends: 8437 [2019-10-13 19:45:45,242 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=372, Invalid=960, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 19:45:45,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8437 states. [2019-10-13 19:45:45,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8437 to 5241. [2019-10-13 19:45:45,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5241 states. [2019-10-13 19:45:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5241 states to 5241 states and 7870 transitions. [2019-10-13 19:45:45,557 INFO L78 Accepts]: Start accepts. Automaton has 5241 states and 7870 transitions. Word has length 147 [2019-10-13 19:45:45,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:45,557 INFO L462 AbstractCegarLoop]: Abstraction has 5241 states and 7870 transitions. [2019-10-13 19:45:45,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 19:45:45,557 INFO L276 IsEmpty]: Start isEmpty. Operand 5241 states and 7870 transitions. [2019-10-13 19:45:45,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-13 19:45:45,564 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:45,564 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] [2019-10-13 19:45:45,564 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:45,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:45,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1983851261, now seen corresponding path program 1 times [2019-10-13 19:45:45,565 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:45,566 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341151746] [2019-10-13 19:45:45,566 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:45,566 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:45,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:46,036 WARN L191 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:45:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:46,077 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 19:45:46,077 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341151746] [2019-10-13 19:45:46,078 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:46,078 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:45:46,078 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118219447] [2019-10-13 19:45:46,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:45:46,079 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:46,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:45:46,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:45:46,079 INFO L87 Difference]: Start difference. First operand 5241 states and 7870 transitions. Second operand 6 states. [2019-10-13 19:45:46,450 WARN L191 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-13 19:45:48,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:48,646 INFO L93 Difference]: Finished difference Result 7383 states and 11193 transitions. [2019-10-13 19:45:48,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:45:48,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2019-10-13 19:45:48,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:48,659 INFO L225 Difference]: With dead ends: 7383 [2019-10-13 19:45:48,659 INFO L226 Difference]: Without dead ends: 2962 [2019-10-13 19:45:48,668 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:45:48,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2019-10-13 19:45:48,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 2393. [2019-10-13 19:45:48,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2393 states. [2019-10-13 19:45:48,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2393 states to 2393 states and 3467 transitions. [2019-10-13 19:45:48,842 INFO L78 Accepts]: Start accepts. Automaton has 2393 states and 3467 transitions. Word has length 147 [2019-10-13 19:45:48,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:48,842 INFO L462 AbstractCegarLoop]: Abstraction has 2393 states and 3467 transitions. [2019-10-13 19:45:48,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:45:48,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2393 states and 3467 transitions. [2019-10-13 19:45:48,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-13 19:45:48,847 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:48,847 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] [2019-10-13 19:45:48,848 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:48,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:48,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1902905006, now seen corresponding path program 1 times [2019-10-13 19:45:48,848 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:48,849 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942404553] [2019-10-13 19:45:48,849 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:48,849 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:48,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat