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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 22:50:01,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 22:50:01,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 22:50:01,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 22:50:01,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 22:50:01,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 22:50:01,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 22:50:01,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 22:50:01,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 22:50:01,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 22:50:01,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 22:50:01,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 22:50:01,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 22:50:01,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 22:50:01,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 22:50:01,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 22:50:01,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 22:50:01,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 22:50:01,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 22:50:01,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 22:50:01,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 22:50:01,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 22:50:01,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 22:50:01,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 22:50:01,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 22:50:01,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 22:50:01,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 22:50:01,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 22:50:01,697 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 22:50:01,724 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 22:50:01,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 22:50:01,726 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 22:50:01,726 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 22:50:01,726 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 22:50:01,727 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 22:50:01,727 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 22:50:01,727 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 22:50:01,727 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 22:50:01,728 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 22:50:01,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 22:50:01,730 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 22:50:01,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 22:50:01,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 22:50:01,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 22:50:01,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 22:50:01,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 22:50:01,731 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 22:50:01,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 22:50:01,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 22:50:01,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 22:50:01,732 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 22:50:01,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 22:50:01,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 22:50:01,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 22:50:01,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 22:50:01,734 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 22:50:01,734 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 22:50:01,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 22:50:01,734 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 22:50:01,789 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 22:50:01,805 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 22:50:01,809 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 22:50:01,812 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 22:50:01,813 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 22:50:01,814 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label00.c [2019-09-09 22:50:01,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f3c77b40/da4f665d001c47f68cc81e13eb978445/FLAG189427cc6 [2019-09-09 22:50:02,775 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 22:50:02,777 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label00.c [2019-09-09 22:50:02,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f3c77b40/da4f665d001c47f68cc81e13eb978445/FLAG189427cc6 [2019-09-09 22:50:03,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f3c77b40/da4f665d001c47f68cc81e13eb978445 [2019-09-09 22:50:03,206 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 22:50:03,207 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 22:50:03,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 22:50:03,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 22:50:03,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 22:50:03,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 10:50:03" (1/1) ... [2019-09-09 22:50:03,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630c9713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:50:03, skipping insertion in model container [2019-09-09 22:50:03,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 10:50:03" (1/1) ... [2019-09-09 22:50:03,245 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 22:50:03,433 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 22:50:05,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 22:50:05,798 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 22:50:06,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 22:50:06,897 INFO L192 MainTranslator]: Completed translation [2019-09-09 22:50:06,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:50:06 WrapperNode [2019-09-09 22:50:06,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 22:50:06,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 22:50:06,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 22:50:06,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 22:50:06,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:50:06" (1/1) ... [2019-09-09 22:50:06,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:50:06" (1/1) ... [2019-09-09 22:50:07,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:50:06" (1/1) ... [2019-09-09 22:50:07,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:50:06" (1/1) ... [2019-09-09 22:50:07,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:50:06" (1/1) ... [2019-09-09 22:50:07,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:50:06" (1/1) ... [2019-09-09 22:50:07,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:50:06" (1/1) ... [2019-09-09 22:50:07,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 22:50:07,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 22:50:07,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 22:50:07,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 22:50:07,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:50:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 22:50:07,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 22:50:07,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 22:50:07,521 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 22:50:07,521 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 22:50:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 22:50:07,523 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 22:50:07,523 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-09 22:50:07,523 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-09 22:50:07,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 22:50:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 22:50:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 22:50:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 22:50:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 22:50:07,527 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-09 22:50:07,528 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-09 22:50:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 22:50:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 22:50:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 22:50:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 22:50:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 22:50:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 22:50:18,288 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 22:50:18,288 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 22:50:18,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 10:50:18 BoogieIcfgContainer [2019-09-09 22:50:18,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 22:50:18,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 22:50:18,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 22:50:18,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 22:50:18,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 10:50:03" (1/3) ... [2019-09-09 22:50:18,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d34e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 10:50:18, skipping insertion in model container [2019-09-09 22:50:18,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:50:06" (2/3) ... [2019-09-09 22:50:18,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d34e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 10:50:18, skipping insertion in model container [2019-09-09 22:50:18,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 10:50:18" (3/3) ... [2019-09-09 22:50:18,298 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label00.c [2019-09-09 22:50:18,308 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 22:50:18,317 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 22:50:18,333 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 22:50:18,361 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 22:50:18,361 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 22:50:18,361 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 22:50:18,361 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 22:50:18,361 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 22:50:18,361 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 22:50:18,362 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 22:50:18,362 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 22:50:18,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-09 22:50:18,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-09 22:50:18,419 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 22:50:18,420 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 22:50:18,421 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 22:50:18,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 22:50:18,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1719268642, now seen corresponding path program 1 times [2019-09-09 22:50:18,428 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 22:50:18,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:50:18,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 22:50:18,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:50:18,467 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 22:50:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 22:50:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 22:50:18,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 22:50:18,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 22:50:18,745 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 22:50:18,751 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 22:50:18,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 22:50:18,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 22:50:18,768 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 3 states. [2019-09-09 22:50:29,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 22:50:29,636 INFO L93 Difference]: Finished difference Result 3221 states and 5783 transitions. [2019-09-09 22:50:29,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 22:50:29,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-09-09 22:50:29,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 22:50:29,686 INFO L225 Difference]: With dead ends: 3221 [2019-09-09 22:50:29,686 INFO L226 Difference]: Without dead ends: 3153 [2019-09-09 22:50:29,690 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 22:50:29,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2019-09-09 22:50:29,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 3151. [2019-09-09 22:50:29,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3151 states. [2019-09-09 22:50:29,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3151 states to 3151 states and 5670 transitions. [2019-09-09 22:50:29,868 INFO L78 Accepts]: Start accepts. Automaton has 3151 states and 5670 transitions. Word has length 46 [2019-09-09 22:50:29,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 22:50:29,869 INFO L475 AbstractCegarLoop]: Abstraction has 3151 states and 5670 transitions. [2019-09-09 22:50:29,869 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 22:50:29,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3151 states and 5670 transitions. [2019-09-09 22:50:29,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-09-09 22:50:29,875 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 22:50:29,875 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 22:50:29,876 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 22:50:29,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 22:50:29,876 INFO L82 PathProgramCache]: Analyzing trace with hash 941986173, now seen corresponding path program 1 times [2019-09-09 22:50:29,876 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 22:50:29,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:50:29,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 22:50:29,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:50:29,878 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 22:50:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 22:50:30,129 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 22:50:30,130 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 22:50:30,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 22:50:30,131 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 22:50:30,133 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 22:50:30,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 22:50:30,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 22:50:30,134 INFO L87 Difference]: Start difference. First operand 3151 states and 5670 transitions. Second operand 5 states. [2019-09-09 22:50:46,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 22:50:46,645 INFO L93 Difference]: Finished difference Result 6210 states and 9614 transitions. [2019-09-09 22:50:46,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 22:50:46,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2019-09-09 22:50:46,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 22:50:46,679 INFO L225 Difference]: With dead ends: 6210 [2019-09-09 22:50:46,679 INFO L226 Difference]: Without dead ends: 6210 [2019-09-09 22:50:46,680 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-09 22:50:46,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6210 states. [2019-09-09 22:50:46,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6210 to 6103. [2019-09-09 22:50:46,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6103 states. [2019-09-09 22:50:46,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 9452 transitions. [2019-09-09 22:50:46,834 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 9452 transitions. Word has length 119 [2019-09-09 22:50:46,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 22:50:46,835 INFO L475 AbstractCegarLoop]: Abstraction has 6103 states and 9452 transitions. [2019-09-09 22:50:46,835 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 22:50:46,835 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 9452 transitions. [2019-09-09 22:50:46,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-09-09 22:50:46,838 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 22:50:46,838 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 22:50:46,838 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 22:50:46,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 22:50:46,839 INFO L82 PathProgramCache]: Analyzing trace with hash 2130380577, now seen corresponding path program 1 times [2019-09-09 22:50:46,839 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 22:50:46,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:50:46,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 22:50:46,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:50:46,841 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 22:50:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 22:50:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 22:50:47,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 22:50:47,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 22:50:47,006 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 22:50:47,007 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 22:50:47,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 22:50:47,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 22:50:47,013 INFO L87 Difference]: Start difference. First operand 6103 states and 9452 transitions. Second operand 6 states. [2019-09-09 22:51:02,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 22:51:02,172 INFO L93 Difference]: Finished difference Result 9369 states and 13809 transitions. [2019-09-09 22:51:02,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 22:51:02,175 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2019-09-09 22:51:02,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 22:51:02,222 INFO L225 Difference]: With dead ends: 9369 [2019-09-09 22:51:02,222 INFO L226 Difference]: Without dead ends: 9369 [2019-09-09 22:51:02,223 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 22:51:02,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9369 states. [2019-09-09 22:51:02,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9369 to 9251. [2019-09-09 22:51:02,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9251 states. [2019-09-09 22:51:02,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9251 states to 9251 states and 13566 transitions. [2019-09-09 22:51:02,417 INFO L78 Accepts]: Start accepts. Automaton has 9251 states and 13566 transitions. Word has length 124 [2019-09-09 22:51:02,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 22:51:02,418 INFO L475 AbstractCegarLoop]: Abstraction has 9251 states and 13566 transitions. [2019-09-09 22:51:02,418 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 22:51:02,419 INFO L276 IsEmpty]: Start isEmpty. Operand 9251 states and 13566 transitions. [2019-09-09 22:51:02,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-09-09 22:51:02,420 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 22:51:02,421 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 22:51:02,421 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 22:51:02,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 22:51:02,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1082729107, now seen corresponding path program 1 times [2019-09-09 22:51:02,422 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 22:51:02,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:51:02,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 22:51:02,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:51:02,423 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 22:51:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 22:51:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 22:51:02,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 22:51:02,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 22:51:02,573 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 22:51:02,574 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 22:51:02,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 22:51:02,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-09 22:51:02,575 INFO L87 Difference]: Start difference. First operand 9251 states and 13566 transitions. Second operand 6 states. [2019-09-09 22:51:16,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 22:51:16,889 INFO L93 Difference]: Finished difference Result 18976 states and 27409 transitions. [2019-09-09 22:51:16,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-09 22:51:16,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2019-09-09 22:51:16,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 22:51:16,961 INFO L225 Difference]: With dead ends: 18976 [2019-09-09 22:51:16,961 INFO L226 Difference]: Without dead ends: 18976 [2019-09-09 22:51:16,962 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-09 22:51:16,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18976 states. [2019-09-09 22:51:17,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18976 to 18637. [2019-09-09 22:51:17,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18637 states. [2019-09-09 22:51:17,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18637 states to 18637 states and 26701 transitions. [2019-09-09 22:51:17,354 INFO L78 Accepts]: Start accepts. Automaton has 18637 states and 26701 transitions. Word has length 127 [2019-09-09 22:51:17,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 22:51:17,356 INFO L475 AbstractCegarLoop]: Abstraction has 18637 states and 26701 transitions. [2019-09-09 22:51:17,356 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 22:51:17,356 INFO L276 IsEmpty]: Start isEmpty. Operand 18637 states and 26701 transitions. [2019-09-09 22:51:17,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-09-09 22:51:17,360 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 22:51:17,361 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 22:51:17,362 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 22:51:17,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 22:51:17,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1331976361, now seen corresponding path program 1 times [2019-09-09 22:51:17,362 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 22:51:17,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:51:17,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 22:51:17,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:51:17,367 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 22:51:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 22:51:17,536 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 22:51:17,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 22:51:17,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 22:51:17,537 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 22:51:17,537 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 22:51:17,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 22:51:17,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 22:51:17,538 INFO L87 Difference]: Start difference. First operand 18637 states and 26701 transitions. Second operand 5 states. [2019-09-09 22:51:32,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 22:51:32,696 INFO L93 Difference]: Finished difference Result 39422 states and 52114 transitions. [2019-09-09 22:51:32,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 22:51:32,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-09-09 22:51:32,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 22:51:32,858 INFO L225 Difference]: With dead ends: 39422 [2019-09-09 22:51:32,858 INFO L226 Difference]: Without dead ends: 39422 [2019-09-09 22:51:32,859 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-09 22:51:32,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39422 states. [2019-09-09 22:51:33,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39422 to 37524. [2019-09-09 22:51:33,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37524 states. [2019-09-09 22:51:33,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37524 states to 37524 states and 49214 transitions. [2019-09-09 22:51:33,889 INFO L78 Accepts]: Start accepts. Automaton has 37524 states and 49214 transitions. Word has length 147 [2019-09-09 22:51:33,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 22:51:33,890 INFO L475 AbstractCegarLoop]: Abstraction has 37524 states and 49214 transitions. [2019-09-09 22:51:33,890 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 22:51:33,890 INFO L276 IsEmpty]: Start isEmpty. Operand 37524 states and 49214 transitions. [2019-09-09 22:51:33,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2019-09-09 22:51:33,895 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 22:51:33,896 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 22:51:33,896 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 22:51:33,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 22:51:33,897 INFO L82 PathProgramCache]: Analyzing trace with hash -2005662287, now seen corresponding path program 1 times [2019-09-09 22:51:33,897 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 22:51:33,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:51:33,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 22:51:33,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:51:33,899 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 22:51:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 22:51:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 22:51:34,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 22:51:34,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 22:51:34,099 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 22:51:34,100 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 22:51:34,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 22:51:34,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 22:51:34,101 INFO L87 Difference]: Start difference. First operand 37524 states and 49214 transitions. Second operand 4 states. [2019-09-09 22:51:49,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 22:51:49,452 INFO L93 Difference]: Finished difference Result 96978 states and 132360 transitions. [2019-09-09 22:51:49,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 22:51:49,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 257 [2019-09-09 22:51:49,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 22:51:49,772 INFO L225 Difference]: With dead ends: 96978 [2019-09-09 22:51:49,773 INFO L226 Difference]: Without dead ends: 96978 [2019-09-09 22:51:49,773 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 22:51:49,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96978 states. [2019-09-09 22:51:53,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96978 to 93852. [2019-09-09 22:51:53,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93852 states. [2019-09-09 22:51:53,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93852 states to 93852 states and 128482 transitions. [2019-09-09 22:51:53,906 INFO L78 Accepts]: Start accepts. Automaton has 93852 states and 128482 transitions. Word has length 257 [2019-09-09 22:51:53,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 22:51:53,908 INFO L475 AbstractCegarLoop]: Abstraction has 93852 states and 128482 transitions. [2019-09-09 22:51:53,912 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 22:51:53,912 INFO L276 IsEmpty]: Start isEmpty. Operand 93852 states and 128482 transitions. [2019-09-09 22:51:53,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2019-09-09 22:51:53,949 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 22:51:53,950 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 22:51:53,961 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 22:51:53,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 22:51:53,962 INFO L82 PathProgramCache]: Analyzing trace with hash -632284618, now seen corresponding path program 1 times [2019-09-09 22:51:53,963 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 22:51:53,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:51:53,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 22:51:53,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:51:53,964 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 22:51:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 22:51:55,329 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 22:51:55,329 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 22:51:55,329 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 22:51:55,331 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 738 with the following transitions: [2019-09-09 22:51:55,334 INFO L207 CegarAbsIntRunner]: [0], [1], [3088], [3092], [3096], [3100], [3104], [3108], [3112], [3116], [3127], [3131], [3135], [3146], [3150], [3154], [3158], [3169], [3173], [3184], [3188], [3192], [3196], [3200], [3204], [3208], [3212], [3216], [3220], [3224], [3228], [3232], [3236], [3240], [3251], [3255], [3259], [3263], [3267], [3271], [3275], [3279], [3283], [3287], [3291], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3361], [3365], [3376], [3380], [3384], [3395], [3399], [3403], [3407], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3449], [3454], [3456], [4195], [4196], [4200], [4204], [4208], [4212], [4216], [4220], [4224], [4228], [4232], [4236], [4240], [4244], [4248], [4252], [4256], [4260], [4264], [4268], [4279], [4290], [4294], [4298], [4309], [4313], [4317], [4321], [4325], [4329], [4333], [4337], [4341], [4345], [4349], [4353], [4357], [4361], [4365], [4369], [4373], [4377], [4381], [4385], [4396], [4400], [4404], [4408], [4412], [4416], [4420], [4431], [4435], [4439], [4443], [4454], [4458], [4462], [4466], [4470], [4474], [4478], [4482], [4486], [4490], [4494], [4498], [4502], [4506], [4510], [4514], [4518], [4522], [4526], [4530], [4534], [4538], [4542], [4553], [4557], [4561], [4565], [4569], [4573], [4577], [4581], [4585], [4589], [4593], [4597], [4601], [4605], [4609], [4620], [4624], [4628], [4632], [4636], [4647], [4651], [4655], [4659], [4663], [4667], [4671], [4675], [4679], [4690], [4694], [4698], [4709], [4713], [4717], [4721], [4725], [4729], [4733], [4737], [4741], [4745], [4749], [4753], [4764], [4768], [4772], [4776], [4780], [4784], [4788], [4792], [4803], [4807], [4811], [4815], [4819], [4823], [4827], [4831], [4835], [4839], [4843], [4847], [4858], [4862], [4873], [4877], [4881], [4885], [4896], [4900], [4904], [4908], [4912], [4916], [4920], [4924], [4935], [4939], [4943], [4954], [4958], [4962], [4966], [4970], [4974], [4978], [4982], [4986], [4990], [4994], [4998], [5002], [5006], [5010], [5014], [5018], [5022], [5026], [5030], [5034], [5038], [5042], [5046], [5050], [5054], [5058], [5062], [5066], [5070], [5074], [5078], [5082], [5086], [5090], [5094], [5105], [5109], [5120], [5124], [5128], [5132], [5136], [5140], [5144], [5148], [5152], [5156], [5167], [5171], [5175], [5179], [5183], [5187], [5191], [5195], [5199], [5203], [5207], [5211], [5215], [5219], [5223], [5225], [5226], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5502], [5504], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6421], [6425], [6429], [6440], [6444], [6455], [6459], [6463], [6467], [6471], [6475], [6486], [6490], [6494], [6498], [6502], [6506], [6510], [6514], [6525], [6529], [6533], [6537], [6541], [6545], [6549], [6553], [6557], [6561], [6565], [6569], [6573], [6577], [6581], [6585], [6589], [6593], [6604], [6608], [6619], [6623], [6634], [6645], [6649], [6653], [6657], [6661], [6665], [6669], [6673], [6677], [6681], [6685], [6689], [6693], [6697], [6701], [6712], [6716], [6727], [6731], [6735], [6739], [6743], [6747], [6751], [6755], [6759], [6763], [6767], [6771], [6775], [6779], [6783], [6787], [6791], [6795], [6799], [6801], [6802], [6806], [6815], [6819], [6821], [6832], [6833], [6834], [6835], [6836], [6837], [6838], [6840], [6841] [2019-09-09 22:51:55,442 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 22:51:55,443 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 22:53:26,430 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 22:53:26,433 INFO L272 AbstractInterpreter]: Visited 590 different actions 590 times. Never merged. Never widened. Performed 1164 root evaluator evaluations with a maximum evaluation depth of 15. Performed 1164 inverse root evaluator evaluations with a maximum inverse evaluation depth of 15. Never found a fixpoint. Largest state had 26 variables. [2019-09-09 22:53:26,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 22:53:26,437 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 22:54:33,939 INFO L227 lantSequenceWeakener]: Weakened 710 states. On average, predicates are now at 75.2% of their original sizes. [2019-09-09 22:54:33,939 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 22:54:34,163 INFO L420 sIntCurrentIteration]: We unified 736 AI predicates to 736 [2019-09-09 22:54:34,163 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 22:54:34,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 22:54:34,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2019-09-09 22:54:34,165 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 22:54:34,166 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-09 22:54:34,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-09 22:54:34,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2019-09-09 22:54:34,167 INFO L87 Difference]: Start difference. First operand 93852 states and 128482 transitions. Second operand 17 states.